Database Develop

Installing tremers Froyo on ext2 partition

I found tutorial how to use ext2 partition on SDCARD for haret.
http://android-devs.org/forum/viewtopic.php?f=56&t=194
I created this
2 GB Fat32
1 GB ext2
1 GB ext2
so i have 4 GB disk and 3 partition just as its on tutorial
But after launching haret it should asked me
Press VolDn to launch Installer (to use ext2)
just after the
Checking for partitions
but in my case it just continue with installing without asking me and its uning only fat32
Any suggestion???

our rootfs doesn't have the install function, someone must edit the rootfs to boot into EXT partitions first!

I just copy rootfs to the / of the ext2 and system to /system, and then edit the init script so it remounts properly.
When I start doing partitioned releases I'll try and make it easy, probably by distributing prebuilt images by card size (4G, 8G etc.)

Tremere said:
When I start doing partitioned releases I'll try and make it easy, probably by distributing prebuilt images by card size (4G, 8G etc.)
Click to expand...
Click to collapse
I talked to phh yesterday.. he said ext2 and NAND booting have no effect on stability, performance and battery life. (rhod nand booting has been working for one month)
Performance could change but it would be less than 20%.
So I pray that someone will find the standby killer

So i need only one ext2 partition
Tremere said:
and then edit the init script so it remounts properly.
Click to expand...
Click to collapse
if i knew how and what to edit. Nevermind its not that important. You just focus on your work.

Matzemink said:
I talked to phh yesterday.. he said ext2 and NAND booting have no effect on stability, performance and battery life. (rhod nand booting has been working for one month)
Performance could change but it would be less than 20%.
So I pray that someone will find the standby killer
Click to expand...
Click to collapse
True. I think they also had an incorrect mount option on the rootfs until recently that slowed loopback performance. I think my last (unstable) release contained the fix for that.
For my own AOSP device tree I'm determined to start fresh without the rootfs and loopback crap. Maybe not a big performance gain but easier to 'get around' system wise.
if i knew how and what to edit. Nevermind its not that important. You just focus on your work.
Click to expand...
Click to collapse
off the top of my head, init.etc/init.froyo.rc and there is a line which tries to mount root as yaffs (flash). Not too hard to find.
You might want to have another ext2 for /data though.

How do I partition my micro sd card?
please excuse my bad English
I use translator

The easyest way for me. Download a release of Ubuntu from ubuntu.com and burn it to cd or make bootable USB. Boot live cd and partition from there.

wouldn't it be easier to download a live CD of gparted?

Jonny4911 said:
wouldn't it be easier to download a live CD of gparted?
Click to expand...
Click to collapse
System Rescue CD is my favorite for partitioning tasks. Should work on your sdcard.
Over in the raph forum, e334 posted a guide on partitioning ext2 from Windows

Ext3 as root filesystem?

Hi there,
I've seen all the posts about formatting the sd card with the ext3 filesystem, but i would like to know if there is a way to modify the root filesystem to be ext as well?
I know this is probably a daunting task, but im willing to learn and want to jump into android headfirst. Any suggestions would be appreciated. Thanks!
Sent from my SAMSUNG-SGH-I897 using XDA App

That's basically what Voodoo does, except it uses ext4 not 3. No such thing yet for Froyo unfortunately.

Well this may be OCD of me , but I like knowing the file system isn't some virtual filesystem. I'm still learning advantages and disadvantages of different file systems, but I know that FAT (or RFS) is horrible.
It sounds like I'd need to write my own ext4 driver, flash a kernel with that driver, make a partition on the main 1GB internal memory as ext4, and install the ROM over that. Am I missing anything, or does that sound right? And if that is right, are there resources on how to do that task?
Thanks so much, everyone!

sigmaelectric87 said:
Well this may be OCD of me , but I like knowing the file system isn't some virtual filesystem. I'm still learning advantages and disadvantages of different file systems, but I know that FAT (or RFS) is horrible.
It sounds like I'd need to write my own ext4 driver, flash a kernel with that driver, make a partition on the main 1GB internal memory as ext4, and install the ROM over that. Am I missing anything, or does that sound right? And if that is right, are there resources on how to do that task?
Thanks so much, everyone!
Click to expand...
Click to collapse
first of all, you need to start out with source for 2.2, which is not available yet....so everything else is pretty much not going to happen until source is available. there are couple of 2.1 kernels that have already been built and they work pretty well.
**EDIT**
and source has been released for the i9000. we are close now

[HACK] mount sdcard as ext4

These patches add ext4 support for your sdcard (in the Nexus S - the internal card.) There are a number of reasons you might want to do this - performance (ext4 is faster, plus mounting ext4 is basically instantaneous, which is very nice on reboots...no more checking sdcard), it's more efficient, you get a bunch of file system security features (if you care...)
You should not apply them if you don't really know what you are doing. The patches are resonably benign. Converting your sdcard partition to ext4 is NOT NOT NOT benign and you can really hose yourself doing it.
I'm not going into great depth with these instructions. If you don't understand them, play around with building cyanogen, installing it, etc until they are crystal clear.
To swap your sdcard to ext4:
* Apply the patches and rebuild cyanogen. Rebuild it. They will change your recovery image and vold.
* Install vold and flash (and/or boot) the recovery image.
* Boot into recovery, mount your sdcard and back it up to your computer (i.e., not nandroid, copy the files.) Nandroid would be a good idea too.
* Format your media partition to ext4 (the one that is vfat, by-name is media, mine is partition 3) mkfs.ext4 can be found by googling, or you can use make_ext4fs from /system/bin. I used mkfs.ext4.
* You should be able to manually mount that.
* Push your files back.
* sync and reboot.
Et Voila, you should have an ext4 sdcard partition.
THIS IS VERY DANGEROUS.
YOU CAN REALLY HOSE YOURSELF DOING IT.
Here are the patches:
http://review.cyanogenmod.com/#change,1705
This one adds ext4 support to vold, thus allowing gingerbread to mount ext4 partitions for the sdcard (which on the Nexus S, is the 'media' partition.)
and:
http://review.cyanogenmod.com/#change,1716
This is a change to recovery, making it seamlessly mount ext4 partitions for /sdcard.
Code:
# mount
/dev/block/platform/s3c-sdhci.0/by-name/system on /system type ext4 (ro,noatime,barrier=1,data=ordered,noauto_da_alloc)
/dev/block/platform/s3c-sdhci.0/by-name/userdata on /data type ext4 (rw,nosuid,nodev,noatime,barrier=0,data=ordered)
[b]/dev/block/vold/179:3 on /mnt/sdcard type ext4 (rw,nosuid,nodev,noexec,noatime,barrier=1,data=ordered,noauto_da_alloc)[/b]
/dev/block/vold/179:3 on /mnt/secure/asec type ext4 (rw,nosuid,nodev,noexec,noatime,barrier=1,data=ordered,noauto_da_alloc)
tmpfs on /mnt/sdcard/.android_secure type tmpfs (ro,relatime,size=0k,mode=000)

....and if you turn on USB Storage, the sdcard shows up as an ext4 disk...
As expected, but this is going to be one for the Linux geeks.
Wow, it is VERY nice to have that sdcard mount instantly on boot. VERY nice.

oh the read/write speeds

If anyone is interested in playing with this, I submitted the change to cyanogen:
http://review.cyanogenmod.com/#change,1705
The tricky bit is getting the filesystem created. You can use:
/system/bin/make_ext4fs.
That leaves me with a recovery which will not currently mount sdcard as ext4 unless I fiddle with fstab and mount it myself. On to look at that.

...and, here's a patch to the recovery which will let it mount /sdcard as either ext4 or vfat, making this change reasonably seamless.
http://review.cyanogenmod.com/#change,1716

i would love to see a Quadrant or a benchmark after this

this is and awesome hack to use with App 2 SD
it'll be lag less
the only annoyance, is that if you want to MOUNT USB on a Windows PC, then you'll need a software to read EXT4
for anyone interested this will be handy
http://www.ext2fsd.com/?page_id=16
i'll definitely be doing this MOD, as i'll be running anything i can from the Internal SD

So this will only work on CM7?

Please some of the genius here may post a step-by-step tutorial or howto for this one? It will be very apreciated.

No, it will work with any build, but you need to rebuild vold in order to get it to mount. The easiest way to get them outside of the CM tree would be to build cm and then copy the vold out and use that. It should work with any ROM.
The latest versions - which are in CM's gerrit - include modifications to the sdcard utility to use fuse to mount the filesystem using FAT semantics (i.e. - bypass security). Frankly, this is a waste. It slows everything down, noticeably, and app problems are few and easily fixed if you know how to fire off a chmod.
I haven't provided step by step instructions since it can seriously hose your phone if you don't know what you are doing.

DebauchedSloth said:
No, it will work with any build, but you need to rebuild vold in order to get it to mount. The easiest way to get them outside of the CM tree would be to build cm and then copy the vold out and use that. It should work with any ROM.
The latest versions - which are in CM's gerrit - include modifications to the sdcard utility to use fuse to mount the filesystem using FAT semantics (i.e. - bypass security). Frankly, this is a waste. It slows everything down, noticeably, and app problems are few and easily fixed if you know how to fire off a chmod.
I haven't provided step by step instructions since it can seriously hose your phone if you don't know what you are doing.
Click to expand...
Click to collapse
Wait so it's a waste? It isn't worth using ?

Anderdroid said:
Wait so it's a waste? It isn't worth using ?
Click to expand...
Click to collapse
If done right this would increase the read/write speeds. For example, your boot up time would be much faster and ext4 is more effecient. So it's not a waste but it has to be done correctly otherwise is could do more damage than good

Using the version I posted to CM gerrit, which bounces the file system through fuse and mimics FAT security, is still better than FAT (IMO), but it's not nearly as fast as just mounting the filesystem as Ext4 - though it is more compatible.
I've been running mine mounted as straight ext4 for a couple of weeks. Probably the single best mod I've made to any of my phones. There are occasional app bits that I need to fix manually (such Dropbox resetting file ownership), but it's worth it for the quicker boot up and faster overall operation.

Here you find the ROM CyanogenMod 7 compiled for Nexus One with ext4 sdcard mount support:
- https://github.com/diegostamigni/nexus/tree/master/one

Is the only reason to pipe it through fuse to get it to mount on m$? If so I'm not going to bother - I only use linux almost exclusively these days

diego.stamigni said:
Here you find the ROM CyanogenMod 7 compiled for Nexus One with ext4 sdcard mount support:
- https://github.com/diegostamigni/nexus/tree/master/one
Click to expand...
Click to collapse
No version for Nexus S?

Looking forward to this develpoing, as the ext4 conversion (done via modaco rom beta2 in recoverymode) made a HUGE difference to the galaxy tab i have (halved the loading times of everything). ^^
Unfortunately im far to noob to help out though ...will be keeping a keen eye on it all and learning

Forgive my ignorance, but why don't phones come like this?

NicholasQ said:
Forgive my ignorance, but why don't phones come like this?
Click to expand...
Click to collapse
window$ more then likely.
window$ can't even see Linux file systems without special drivers installed.
if i mess this up would it brick my phone? i'm really wanting to try this but i don't want to turn my Nexus S into a paperweight

so if we did this, would the windows computer be able to read the mounted sd card? is there any other things that would be needed after this mod? or just format to ext4 and be done with it?

[Q] no ext3 in froyo 2.2?

Hi all,
I got my galaxy i9000 (froyo.bujp7 - v2.2 ?, kernel 2.6.32) since three weeks and as I'm exploring its abilities I came to wonder whether it's really missing an ext3 support?
The only reason why I need this file system is because I have a file which is greater than 4 GB in its size (it's a map file for navit). So as FAT32 won't be able to address such large files, I formatted my external SD as ext3 on my PC (Debian Squeece, kernel 2.6.34.1 - preemptive).
I was expecting it to work out of the box, since ext* is a native linux file system.
I browsed the net and all I got was some tutorials for app2sd and such. From what I think I've understood, I need a different ROM that supports ext3, is that correct?
I actually like to use the phone for a while before I start hacking its guts. But in case I really have to go through this, can anyone give me a hint where to start?
Thanks in advance.
gilzad

Many of the custom kernels here have support for ext4 included as part of their lagfix schemes, e.g hardcores or voodoo kernels. Unfortunately, as far as i know the sd cards are always mounted with vfat instead of autodetect so you might have to manualy set that in the corresponding mount file.
Hope that helps.
Sent from my GT-I9000 using Tapatalk

[Re-OPEN] SanDisk 64BG EXT4/exFAT N.E.A.K. Kernel

Hello,
I re-open this thread because I have new information about the compatibility of N.E.A.K. kernel with my card formatted in exFAT.
N.E.A.K. Kernel don't support this file system!!! That's the reason why my card doesn't work with...
I restart to "0" because I think the alone solution is to use EXT4 with auto-mount at boot.
@ scote (or other):
Can I use your manual mount cmd on init.d or other way?
Hello,
With n7100 international + Omega v10 (Android 4.1.2 based) + N.E.A.K. kernel v1.4x
With various µSD card (but especially with my new Sandisk UHS 64Go) I would know how to use ext4 filesystem.
After computer formatting in ext4 the card can't be really usable by phone:
- Storage menu don't see him.
- Recovery can't do anything with (mount / format)
- Some apps can see him. (like empty 64GB / or 0Gb card capacity !)
- ES Files explorer work with but by the /mnt/extsd/card directory and if no SD card in slot work to !!!
thus I expect doesn't work really
If you have any information about what work, can or can't work, or anything about filesystems, software...
Thank you
Click to expand...
Click to collapse

I had the same thing happen. I plugged it not my computers sd card reader and the computer acted as if nothing was there. I tried to force a format through DOS but it failed. Ultimately I had to buy a new MicroSD card.... Now it works.

Update: Card doesn't work with my reader/computer
What file system are you using?

Why not just use exFat? It useable on Note 2 and readable by Windows. Just make sure to use the latest TWRP for system bqckup

Re: SD Card file system usable by OS apps
You can mount ext4 file system manually if you are rooted, from a terminal or adb shell
mount -t ext4 /dev/block/mmcblk1p1 <some directory>
substitute <some directory> with the path without the <> I used /sdcard/mnt
of course if you wont be able to read the card with windows pcs
I think there might be an app to do this for you, usb mounter

Android won't mount ext4 by default.
Also, windows can't mount ext4 drives but you can use something like minitool partition wizard to reformat it to ExFAT or NTFS if you're on samsung ROMs, or Fat32 if you're using CM/AOSP ROMs.
Pongster said he'd be making a test kernel to see if he can get ext4 to auto-mount in the HyperDroid JBX thread, but that's not released yet.

You aren't using TWRP 2.4.0.0 or 2.4.0.1 by chance?

!!! Sorry, XDA doesn't mail me for new answer.
Thanks your help men
Why not just use exFat? It useable on Note 2 and readable by Windows. Just make sure to use the latest TWRP for system bqckup
Click to expand...
Click to collapse
I don't like Microsoft. If I have a Linux device like Android N7100 I want to use it the more possible with Linux environment.
I useCWM Touch v6.0.1.4-jb moded by Xiaolu. Good?
You can mount ext4 file system manually if you are rooted, from a terminal or adb shell
mount -t ext4 /dev/block/mmcblk1p1 <some directory>
substitute <some directory> with the path without the <> I used /sdcard/mnt
Click to expand...
Click to collapse
Thus can't be used like a FAT SD Card? By Samy explorer and others softs? Can't be see by system like an external card, not possible to manage it very good (capacities disponnible by exemple) ?
You aren't using TWRP 2.4.0.0 or 2.4.0.1 by chance?
Click to expand...
Click to collapse
No; why?

Re: SD Card file system usable by OS apps
Once its mounted any explorer or app dont care or know what the filesystem is

Yes, but can I will see the SD like a "normal" FAT formatted card?
I want to say, in menu/storage like a external SD?
If the card like this, have all the same functionality of FAT card, can you help to auto-mount at boot?
My card is actually broken: phone or PC won't see anything when connected
'll try with a new 64GB in few hours.

Re: SD Card file system usable by OS apps
StreamingMT said:
!!! Sorry, XDA doesn't mail me for new answer.
I don't like Microsoft. If I have a Linux device like Android N7100 I want to use it the more possible with Linux environment.
I useCWM Touch v6.0.1.4-jb moded
Click to expand...
Click to collapse
I don't see how it related. Both fat and exfat are MS. And exFat is the only option works across Note 2 Android, TWRP,Windows, and can be mounted as thumb drive (with the benefit working with > 4gb files). It's up to you if you want to get yourself into troubles by using other format.
Sent from my GT-N7100 using XDA Premium App

jackleung
I like more ext4, but apparently this is a little bit difficult to do what I want (And I think it's what broke my firts SD). Thus I'll use extFAT for my new one.
That's work perferctly! Just funny to see my new card in packging pre-formatted in extFAT...
All is good for me now, thanks you every body for your help ;p

Hello,
I re-open this thread because I have new information about the compatibility of N.E.A.K. kernel with my card formatted in exFAT.
N.E.A.K. Kernel don't support this file system!!! That's the reason why my card doesn't work with...
I restart to "0" because I think the alone solution is to use EXT4 with auto-mount at boot.
@ scote (or other):
Can I use your manual mount cmd on init.d or other way?