Database Develop

Increasing SD Card Capacity

I used autonooter to root my v. 1.1.0 nook color. I currently have a 4 GB SD card installed and would like to increase its capacity to 16 GB without messing something up or having to re-root. I believe the following procedure would work, but I would like a second, or perhaps third opinion before I try it:
1. Connect nook to USB port of PC.
2. Create a new subdirectory on the PC and copy the contents of 4 GB SD card to this subdirectory.
3. Disconnect USB.
4. Unmount SD card in nook.
5. Physically remove 4 GB card from nook.
6. Physically install new, out of the box 16 GB card.
7. When the nook recognizes the new card, format it.
8. Reconnect USB.
9. Copy contents of the subdirectory created in step 2 above to the new SD card.
10. Disconnect USB.
11. Reboot for good luck.
12. Wind up with exactly the same nook as before, but now with more memory.
Any feedback / suggestions would be appreciated. Thanks!

Or turn off Nook, move card to PC, copy files, swap in new card, copy files, move new card to Nook, reboot.
Equivalent, might be faster. Remember to unmount before removing cards.
Sent from my Nook Color using XDA App

Thanks for the feedback. It was really easy and works like a charm.
Sent from my NookColor

Texas Aggie said:
Thanks for the feedback. It was really easy and works like a charm.
Sent from my NookColor
Click to expand...
Click to collapse
Great! Glad it went well!
Sent from my Nook Color w/XDA

[Q] Power Button broken - can I still upgrade to a larger SD card?

Hey guys,
So I have a Nexus One with a power button that doesn't work (so I use the volume button now instead). I was able to root the phone though, and I downloaded ROM Manager and was able to Flash ClockworkMod Recovery.
My understanding is that I should be able to use ROM Manager to install new ROMs, but I also want to upgrade my SD card storage from 4GB to 8GB. From what I've found, it sounds like it takes some formatting and partitioning of the SD card and requires booting into Recovery mode by holding down the Power Button and the Volume Up key - problem is, as you know, that my power button doesn't work.
Is there any way for me to upgrade my SD card that doesn't involve using the power button? I know that ROM Manager has the option to boot into recovery mode, but that brings me to a screen with a triangle, with an exclamation mark and a green Android, and nothing happens. Same thing when I try to use QuickBoot to boot into recovery mode.
I tried looking around to see if there was a thread that would answer my question, but couldn't find one so I'm starting a new thread. If there is a thread that answers this, my apologies - please point me to it.
I hope I was able to provide enough information. Hopefully I'm not S.O.L, and I would appreciate any advice.
Thanks!

It's not necessary to partition SD card unless you flash sense roms or u want to use dt script or s2e to move data to sdext.so you can change your sd card.
I think you should try to flash recovery Again through ROM manager or terminal (try to flash alternate recovery through ROM manager too )
Sent from my Nexus One using xda premium

Thanks amolji, you said a few things that I don't quite get since I haven't had to deal with them (dt script, s2e, sdext, etc).
So would I be ok with just a copy and paste of data from the old SD card to the new one? I should point out that I've moved over quite a few apps to my SD card, so if I do decide to copy/paste data to the new SD card, will the apps that are on the SD card launch properly once I've copied them over?

cyrusxs said:
Thanks amolji, you said a few things that I don't quite get since I haven't had to deal with them (dt script, s2e, sdext, etc).
So would I be ok with just a copy and paste of data from the old SD card to the new one? I should point out that I've moved over quite a few apps to my SD card, so if I do decide to copy/paste data to the new SD card, will the apps that are on the SD card launch properly once I've copied them over?
Click to expand...
Click to collapse
You should be OK. I went from a 4GB to a 16GB card.
-copy content of old sd card to PC
-format new sd card (might not be necessary but I format all new sd card)
-copy contents from PC to new sd card

64gig micro SD card

Anyone know if the new 64gig micro SD card will work in bionic? I've read that it will. But would like to hear from someone that has it installed
Sent from my DROID BIONIC using xda premium

Yes, I'm using a SanDisk 64GB right now, You just need to format it to FAT32 before you use it.

GarethD said:
Yes, I'm using a SanDisk 64GB right now, You just need to format it to FAT32 before you use it.
Click to expand...
Click to collapse
What kind of speeds do you get with that thing?

I can confirm it works; I am using it also. It is a class 6 and is noticeably quicker than the stock one. I replaced a class 10 32 gb card and have noticed any speed diferences between the 2. I would recommend formatting it with your phone.

Are the any special needs to change a card? Can I simply copy data from the old to the new, without having to reinstall programs?
I have a 32gig class 10 I would like to install.

wetii said:
Are the any special needs to change a card? Can I simply copy data from the old to the new, without having to reinstall programs?
I have a 32gig class 10 I would like to install.
Click to expand...
Click to collapse
Just copy your files from the old SD card to your PC (make sure hidden files/folders are included). Then power down your Bionic, swap the SD cards, and power back up. You may wish to format your new card from within the Bionic at this point (go to Settings > Storage > Format SD Card). Then you can copy all your files back over.
Just a tip, to get the most out of your class 10 card you may want to tweak the cache size. There's an app in the Market called SD Card Tester that you can use to measure your speeds. Make sure to change the path from /sdcard to /sdcard-ext by tapping in the top-right corner until it gives you the option. Then you can use another app called SD Booster to experiment with different cache sizes and see which one works best. The default size is 128k. With my Samsung 32 Gb Class 10 card, I found 4096k gave me the best speeds, but YMMV.

Thank you for the reply. I have two questions about your answer.
I changed the card, the option for formatting the SD card was grayed out, any ideas why?
Secondly, my phone is not rooted, is there any other way that you know of, to change the cache size?

Unmount first!
wetii said:
Thank you for the reply. I have two questions about your answer.
I changed the card, the option for formatting the SD card was grayed out, any ideas why?
Secondly, my phone is not rooted, is there any other way that you know of, to change the cache size?
Click to expand...
Click to collapse
You first need to "Unmount SD card" and then the option to "Format SD card" will be available. I don't think there is really that much of a reason to mess with cache sizes. This card works great for me without trying to tweak it.

nook dual usd card files tranfer from comuputer

Hi
Please respond to the following. I tried a lot to look the answer to my problem in the forums, but could not find it (or did not get the right forum)
I dual booted my NC with CM7.1.0. It was working fine without any problem, but suddenly stopped entering into the main screen. Whenever i on the nook the Cyanogen loading ... screen comes and then screen flashes and turns lit black.. the NC is not off but it does not reach to the main system. I tried to use update the CM by copying a new file to usd, but it did not let me do so.. computer hanged. I do not want to format it as it has some .xls files in documents folder in the 4th partition of usd. Can someone please tell me how to extract those files using computer's sd car slot ( I can not use nook usb option as it is not booting CM) and how to recover the older working condition.

I assume you have stock working on emmc. I have a flash file that you can temporarily flash to stock to make it read the fourth partition of the SD as 'sdcard'. Go to my tips thread linked in my signature and item B3 in the second post (last paragraph). It tells you how to modify stock to read that partition. If your stock is rooted, you can just edit the file yourself. If not rooted, you need to flash one of the files attached to the post. Instructions are there. After retrieving your files you can revert stock back to normal by re-editing the file or by flashing a second zip, or just keep it that way and use partition four for both systems. Then you can start over with your verygreen SD and reinstall CM7.

could not get it
leapinlar said:
I assume you have stock working on emmc. I have a flash file that you can temporarily flash to stock to make it read the fourth partition of the SD as 'sdcard'. Go to my tips thread linked in my signature and item B3 in the second post (last paragraph). It tells you how to modify stock to read that partition. If your stock is rooted, you can just edit the file yourself. If not rooted, you need to flash one of the files attached to the post. Instructions are there. After retrieving your files you can revert stock back to normal by re-editing the file or by flashing a second zip, or just keep it that way and use partition four for both systems. Then you can start over with your verygreen SD and reinstall CM7.
Click to expand...
Click to collapse
Dear,
I am new to Android.. .sod could not understand many things that you wrote in your posts... but thanks a lot for finding the time and writing me back..I did not get it how can i solve my problem. I just want to copy one of my files from the sd card and then I will format and install all dual boot files from start... Please let me know if you can give me any simpler way to access and copy my .xls file and restore the cm in previous working condition( this will save me from installing from the start).... rgds

sanshri57 said:
Dear,
I am new to Android.. .sod could not understand many things that you wrote in your posts... but thanks a lot for finding the time and writing me back..I did not get it how can i solve my problem. I just want to copy one of my files from the sd card and then I will format and install all dual boot files from start... Please let me know if you can give me any simpler way to access and copy my .xls file and restore the cm in previous working condition( this will save me from installing from the start).... rgds
Click to expand...
Click to collapse
We'll take this one step at a time. Do you have stock nook still on your internal memory? And if you do, is it rooted or just virgin stock?
Sent from my Nook Color running ParanoidAndroid and Tapatalk

reply
leapinlar said:
We'll take this one step at a time. Do you have stock nook still on your internal memory? And if you do, is it rooted or just virgin stock?
Sent from my Nook Color running ParanoidAndroid and Tapatalk
Click to expand...
Click to collapse
Thanks for being so patient. I dont think it is rooted and the stock nook is touched as i follow a link provided in this forum to boot usd and dual boot nook without losing warranty to install cm7 on a usd.
When i use boot the nc, i see following responses
1. boot without usd: boots to original nc, all files and applications are there and work perfectly fine.
2. boot with usd without going to boot menu: cyanogen loading banner shows up and then screen flashes. .then a lit black screen .. nothing happens after that
3. boot with usd and selecting emmc in boot menu: boots to original nc but hangs at home screen
4. boot with usd and selecting sd (external storage) in boot menu: cyanogen loading banner shows up and then screen flashes. .then a lit black screen .. nothing happens after that

sanshri57 said:
Thanks for being so patient. I dont think it is rooted and the stock nook is touched as i follow a link provided in this forum to boot usd and dual boot nook without losing warranty to install cm7 on a usd.
When i use boot the nc, i see following responses
1. boot without usd: boots to original nc, all files and applications are there and work perfectly fine.
2. boot with usd without going to boot menu: cyanogen loading banner shows up and then screen flashes. .then a lit black screen .. nothing happens after that
3. boot with usd and selecting emmc in boot menu: boots to original nc but hangs at home screen
4. boot with usd and selecting sd (external storage) in boot menu: cyanogen loading banner shows up and then screen flashes. .then a lit black screen .. nothing happens after that
Click to expand...
Click to collapse
Your SD is definitely messed up. You will need to reinstall after we get your file saved that you want.
You will need a spare SD card that you can put my bootable CWM recovery on.
Go to my tips thread linked in my signature and download to your PC three files attached there. The one that starts CWM... and the two that start update-stock...
Extract the CWM zip. It will have a 200Mb .img file in it. Burn that to the spare SD just like you did when you made the verygreen SD. Once that is burned and you can see it on your PC, copy the two update-stock... zips to it.
Remove that SD from the PC and put in the nook. Boot. The CWM menu will come up. Select 'install zip from sdcard '. Then select 'choose zip from sdcard'. Scroll through the list and pick 'update-stockemmc-vold-fstab-modified-for-partition4.zip'. Then confirm the selection. It will flash the zip. Remove the CWM card and reboot to stock.
Insert the verygreen SD and you should be able to connect your USB and see partition 4 on the PC as 'sdcard'.
To return your stock to original after retrieving your file, just go through the process of flashing the other update file with CWM. But most people like leaving it modified so that they can always use just one SD for both systems.

leapinlar said:
Your SD is definitely messed up. You will need to reinstall after we get your file saved that you want.
You will need a spare SD card that you can put my bootable CWM recovery on.
Go to my tips thread linked in my signature and download to your PC three files attached there. The one that starts CWM... and the two that start update-stock...
Extract the CWM zip. It will have a 200Mb .img file in it. Burn that to the spare SD just like you did when you made the verygreen SD. Once that is burned and you can see it on your PC, copy the two update-stock... zips to it.
Remove that SD from the PC and put in the nook. Boot. The CWM menu will come up. Select 'install zip from sdcard '. Then select 'choose zip from sdcard'. Scroll through the list and pick 'update-stockemmc-vold-fstab-modified-for-partition4.zip'. Then confirm the selection. It will flash the zip. Remove the CWM card and reboot to stock.
Insert the verygreen SD and you should be able to connect your USB and see partition 4 on the PC as 'sdcard'.
To return your stock to original after retrieving your file, just go through the process of flashing the other update file with CWM. But most people like leaving it modified so that they can always use just one SD for both systems.
Click to expand...
Click to collapse
I did exactly same, but could not see partition 4 on the pc as 'sdcard'. I see two drives 1. mynookcolor ( i can access all files in it), and 2. a removable disk drive I:/ ( that i can not access). I do not see my files (see pic below) those are on the 4th partition of sd card.

You need to mount the card in settings. Go to settings, device info, SD card. And choose 'mount SD card'.

leapinlar said:
You need to mount the card in settings. Go to settings, device info, SD card. And choose 'mount SD card'.
Click to expand...
Click to collapse
It is already mounted. It shows sd card memory (not available), unmount SD card (\unmount the sd card for safe removal), and format sd card (format (erase) the sd card). However, only third option is active others are grey/inactive.

sanshri57 said:
It is already mounted. It shows sd card memory (not available), unmount SD card (\unmount the sd card for safe removal), and format sd card (format (erase) the sd card). However, only third option is active others are grey/inactive.
Click to expand...
Click to collapse
If it says unavailable and the first two are greyed out, that means it is not mounted. Pull it out and put it back in... wait you had the cable unplugged when you checked that didn't you? You should have.
Sent from my Nook Color running ParanoidAndroid and Tapatalk

leapinlar said:
If it says unavailable and the first two are greyed out, that means it is not mounted. Pull it out and put it back in... wait you had the cable unplugged when you checked that didn't you? You should have.
Sent from my Nook Color running ParanoidAndroid and Tapatalk
Click to expand...
Click to collapse
I tried as told... number of times.. but same result.. I do not see any drive for sdcard. I see a removable drive F:/ (that i cant access) other than mynookcolor e:/ all time.

leapinlar said:
If it says unavailable and the first two are greyed out, that means it is not mounted. Pull it out and put it back in... wait you had the cable unplugged when you checked that didn't you? You should have.
Sent from my Nook Color running ParanoidAndroid and Tapatalk
Click to expand...
Click to collapse
I did it number of times.. the results are same. the nc detects a sd card but two areas a re grey..Everytime when i plug usb my nc to laptop, it shows a mynookcolor drive and a removable disk f:\ drive which can not be accessed. I have used another laptop but it is same...

sanshri57 said:
I tried as told... number of times.. but same result.. I do not see any drive for sdcard. I see a removable drive F:/ (that i cant access) other than mynookcolor e:/ all time.
Click to expand...
Click to collapse
What I am asking is with the USB cable removed, what does the settings show? If you remove and replace the SD with the settings window open, is there any difference? You say it detects it, how do you know that?
Edit: I have been searching for a solution for you. There are two ways to see those files with your PC. To view it in Windows, you must make several complicated changes to your drivers. I'm sure you do not want to do that. The other way is to use Linux. It has the ability to see and mount multiple partitions on an SD. You can either find someone who has a Linux system to do it for you or you can make yourself a Ubuntu Live CD that you can boot with your PC. None of these options are easy, which is why I was trying to do it the other way on your nook.
I don't know why your system is not mounting that SD properly. Even if those changes I had you make were not there, it should at least mount partition one on the nook.
Sent from my Nook Color running ParanoidAndroid and Tapatalk

leapinlar said:
What I am asking is with the USB cable removed, what does the settings show? If you remove and replace the SD with the settings window open, is there any difference? You say it detects it, how do you know that?
Edit: I have been searching for a solution for you. There are two ways to see those files with your PC. To view it in Windows, you must make several complicated changes to your drivers. I'm sure you do not want to do that. The other way is to use Linux. It has the ability to see and mount multiple partitions on an SD. You can either find someone who has a Linux system to do it for you or you can make yourself a Ubuntu Live CD that you can boot with your PC. None of these options are easy, which is why I was trying to do it the other way on your nook.
I don't know why your system is not mounting that SD properly. Even if those changes I had you make were not there, it should at least mount partition one on the nook.
Sent from my Nook Color running ParanoidAndroid and Tapatalk
Click to expand...
Click to collapse
without usb cable,
1. sd card removed
sd card memory (not available)
Unmount SD card (unmount the sd card for safe removal)
Format sd card (format (erase) the sd card
All are grey/inactive
2. sd card inserted
sd card memory (not available)
Unmount SD card (unmount the sd card for safe removal)
Format sd card (format (erase) the sd card
Now top 2 are inactive, but the third one (format) is active
whenever i insert a card it shows small box flash that shows sd with tick mark, and when i remove it again shows the sd flash box with cross mark.

sanshri57 said:
without usb cable,
1. sd card removed
sd card memory (not available)
Unmount SD card (unmount the sd card for safe removal)
Format sd card (format (erase) the sd card
All are grey/inactive
2. sd card inserted
sd card memory (not available)
Unmount SD card (unmount the sd card for safe removal)
Format sd card (format (erase) the sd card
Now top 2 are inactive, but the third one (format) is active
whenever i insert a card it shows small box flash that shows sd with tick mark, and when i remove it again shows the sd flash box with cross mark.
Click to expand...
Click to collapse
The card is not written correctly... if you format it in the nook... you will see it on your computer... then you can remove it... and try writing the uSDcard image again with win32diskimager

DizzyDen said:
The card is not written correctly... if you format it in the nook... you will see it on your computer... then you can remove it... and try writing the uSDcard image again with win32diskimager
Click to expand...
Click to collapse
Dizz, he was trying to figure out how to get his data off of partition 4 before he reformats and starts again. I was hoping he could do it with the nook, but it is not reading it. I had him modify emmc so it can see partition 4, but no luck here. Do you have any ideas?
Sent from my Nook Color running ParanoidAndroid and Tapatalk

I just had another thought. Put the card in the PC and open with your partition software. Delete partition one, two and three. Then maybe windows can see partition 4, since it is now partition one. You may have to move it to the beginning of the SD, but I don't think you have to.
Edit: I was able to test this on my spare SD card with the EaseUS partition program and it works. Be sure to give it a drive letter.
Sent from my Nook Color running ParanoidAndroid and Tapatalk

leapinlar said:
I just had another thought. Put the card in the PC and open with your partition software. Delete partition one, two and three. Then maybe windows can see partition 4, since it is now partition one. You may have to move it to the beginning of the SD, but I don't think you have to.
Edit: I was able to test this on my spare SD card with the EaseUS partition program and it works. Be sure to give it a drive letter.
Sent from my Nook Color running ParanoidAndroid and Tapatalk
Click to expand...
Click to collapse
so, if i do that .. will i be able to get all my applications back and running..i have some paid google apps on my usd. i also tried to make an image of the usd and tried to use boot from this new image written usd.. but it is not booting from the new one..

sanshri57 said:
so, if i do that .. will i be able to get all my applications back and running..i have some paid google apps on my usd. i also tried to make an image of the usd and tried to use boot from this new image written usd.. but it is not booting from the new one..
Click to expand...
Click to collapse
No, your installed apps are stored on partition 3. But if you bought them, google lets you redownload and install to as many devices as you want, as long as you are logged in to your Google Play account. What you will get back is things you had stored on 'sdcard' (pictures, books, music and other files like your xls files you wanted, what you saw in that screenshot you posted.)

leapinlar said:
I just had another thought. Put the card in the PC and open with your partition software. Delete partition one, two and three. Then maybe windows can see partition 4, since it is now partition one. You may have to move it to the beginning of the SD, but I don't think you have to.
Edit: I was able to test this on my spare SD card with the EaseUS partition program and it works. Be sure to give it a drive letter.
Sent from my Nook Color running ParanoidAndroid and Tapatalk
Click to expand...
Click to collapse
I had thought of this before I commented about the SD being not formatted correctly... should only have to delete partition 1 ("boot") since windows should use the first fat partition....
However...
Since the nook doesn't show "unmount" or ""sd card memory" active... it is certainly not reading partition 1 correctly.
He can flash my B&N 1.4.1 with SASD vold.fstab edits to see partition 4 (if it can read it) and transfer everything from that partition.

[Guide] Note 4 External SD Fix For exfat formatted SDXC and U1 Higher Than 32gb

Nice Day Guys And Fellas!
I'm Here Today With Another Guide, hope It will find people who need it and be useful to them.
I found the possible solution for Note 4 SDcard Issue after dealing so much with it, posting here it may help some people.
History :
If you own an SDXC or 64GB SD card or higher with exfat you probably faced suddenly disappearing all the sd card contents where says the sd card is empty and after a reboot it shows the content, Or either later indicates SDcard is currupted, mine started with this issue right after buying a fresh SDXC and formatting it using Windows, Note 4 and etc goes to same scenario after some time, it actually happens because Note 4 and Windows formatting SD Card using exfat FS.
In this guide you need a windows PC or TWRP or Mac at your choice.
Steps to fix the issue :
I assume only high speed sd cards (SDXC and U1+) with exfat larger than 32gb are problematic with note 4 and smaller size than 64gb can be formatted to Fat32 without any tools already in Windows, so this guide is intended for high end ones, like the one i had Silicon Power SDXC U1 Elite class 10
Metod 1: (recommended)
1. Detach your MicroSD card (most known to be problematic type sd is SDXC)
2. Insert it to SD Adapter place to your laptop (if your computer has no dedicated sd slot attached to motherboard better use a laptop otherwise use Card reader) and remember drive letter
3. Store your sd content to your pc to restore later.
4. Download EaseUS partition master (free or other type) all will do the job
5. Right click on the right drive letter corresponding for your SD Card and select Format
6. Give it a name Like "SDcard" or what you like then select Fat32 for file system, finally select 64kb for cluster size, and press OK button
7. Finally press the apply button in top left and magic happens
8. Now you can place back your files, your sd card is ready.
Method 2 TWRP
1. Backup your data in an OTG drive or Internal storage or cloud.
2. Boot into the TWRP select wipe menu
3. Push advanced wipe, select MicroSD card, push change File System button.
4. In this menu choose Fat and press the button, wait for it till the a message says successful appear.
5. Now boot to your system and you'll notice it's fixed and you can place your files back.
Method 3 Using Mac OS X:
If you own a Macbook or iMac or anything similar just attach your SD card to it using its Adapter then run the "Disk Utility" app in others folder or type it in Spotlight (don't forget to take a backup already) then Select erase button on the sd card and use Fat in the menu, just you need to do it Twice, then you'll good to go.
I was able to do that in Sierra with latest updates.
As the final note let me know your experience with this guide and if it helped you or unfortutly not.
If you find this article helpful don't forget to :good: press thanks button or send me some good and positive energy :fingers-crossed:

I have also a solution for sd card write permission, if needed i can mention that, but the workaround is not mine work.

I always use sd formatter 4 from sd association or formatting in Smartphone
64gb sandisk extrem - no Problem

This happens on my Note 4 Exynos N910C sometimes, with my Samsung 128GB Class 10 MicroSD card. But only when my phone is unplugged. It will sometimes show the card as having no contents (Gallery and other apps don't show SD card photos or videos, etc.) and to fix it I either have to unmount and mount the card, or reboot.
Is this the same issue?

Cyber-Logic said:
This happens on my Note 4 Exynos N910C sometimes, with my Samsung 128GB Class 10 MicroSD card. But only when my phone is unplugged. It will sometimes show the card as having no contents (Gallery and other apps don't show SD card photos or videos, etc.) and to fix it I either have to unmount and mount the card, or reboot.
Is this the same issue?
Click to expand...
Click to collapse
Yes you got same issue

Halcyon said:
I have also a solution for sd card write permission, if needed i can mention that, but the workaround is not mine work.
Click to expand...
Click to collapse
Does that Solutions imply repartitioning and adoptable storage?
Or is it a real fix for sdcard writing permission on MM and higher?
Please feel free to post

sxg75 said:
Does that Solutions imply repartitioning and adoptable storage?
Or is it a real fix for sdcard writing permission on MM and higher?
Please feel free to post
Click to expand...
Click to collapse
yes write permission for all app including ones that designed for before MM and N

Halcyon said:
yes write permission for all app including ones that designed for before MM and N
Click to expand...
Click to collapse
Ok - curious. Where is it?

Halcyon said:
Nice Day Guys And Fellas!
I'm Here Today With Another Guide, hope It will find people who need it and be useful to them.
I found the possible solution for Note 4 SDcard Issue after dealing so much with it, posting here it may help some people.
History :
If you own an SDXC or 64GB SD card or higher with exfat you probably faced suddenly disappearing all the sd card contents where says the sd card is empty and after a reboot it shows the content, Or either later indicates SDcard is currupted, mine started with this issue right after buying a fresh SDXC and formatting it using Windows, Note 4 and etc goes to same scenario after some time, it actually happens because Note 4 and Windows formatting SD Card using exfat FS.
In this guide you need a windows PC or TWRP or Mac at your choice.
Steps to fix the issue :
I assume only high speed sd cards (SDXC and U1+) with exfat larger than 32gb are problematic with note 4 and smaller size than 64gb can be formatted to Fat32 without any tools already in Windows, so this guide is intended for high end ones, like the one i had Silicon Power SDXC U1 Elite class 10
Metod 1: (recommended)
1. Detach your MicroSD card (most known to be problematic type sd is SDXC)
2. Insert it to SD Adapter place to your laptop (if your computer has no dedicated sd slot attached to motherboard better use a laptop otherwise use Card reader) and remember drive letter
3. Store your sd content to your pc to restore later.
4. Download EaseUS partition master (free or other type) all will do the job
5. Right click on the right drive letter corresponding for your SD Card and select Format
6. Give it a name Like "SDcard" or what you like then select Fat32 for file system, finally select 64kb for cluster size, and press OK button
7. Finally press the apply button in top left and magic happens
8. Now you can place back your files, your sd card is ready.
Method 2 TWRP
1. Backup your data in an OTG drive or Internal storage or cloud.
2. Boot into the TWRP select wipe menu
3. Push advanced wipe, select MicroSD card, push change File System button.
4. In this menu choose Fat and press the button, wait for it till the a message says successful appear.
5. Now boot to your system and you'll notice it's fixed and you can place your files back.
Method 3 Using Mac OS X:
If you own a Macbook or iMac or anything similar just attach your SD card to it using its Adapter then run the "Disk Utility" app in others folder or type it in Spotlight (don't forget to take a backup already) then Select erase button on the sd card and use Fat in the menu, just you need to do it Twice, then you'll good to go.
I was able to do that in Sierra with latest updates.
As the final note let me know your experience with this guide and if it helped you or unfortutly not.
If you find this article helpful don't forget to :good: press thanks button or send me some good and positive energy :fingers-crossed:
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I have formatted the micro-SD card as you say, and when I rebooted my Galaxy Note 4, half of the things I had previously saved disappeared.