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Ok Guys, new to this site, hopefully y'all can help me out.
I recently rooted my G1, Installed the latest Cyanogen (4.7.2.1) and installed a theme ( Marks Theme). I dont have very many apps cause I didnt want to bog down the phone memory.....
I love the set up but it started running slower even after I started running the over clocker widget.
My phone is only showing 14.18 MB of free internal memory. I went through my applications installed and can only find around 25 MB being used from all installed apps ( including browser and messaging etc.)
I even tried to do a factory reset ( by going through the settings) and the factory reset is not working. It changed nothing.
Is there something that Im missing? I feel like I should have much more free memory.
I love the way my phone works and the set up, I just wish it had more free memory so that it would run faster.
Ive thought about doing the Apps2SD but I feel like I chould have much more memory on my phone even before doing something like that.
PLEASE HELP!!!!!!
This is a question, and as such belongs in the Q&A section. You'll receive a better response to such things there.
The internal memory you're referring to is your /system partition.
It is where the entire OS is stored, basically. Which takes up, in your case, a whopping 55 MB (out of 70 MB).
If you //really// want more room, follow the Apps-2-SD tutorials out there. You'll get /plenty/ of space.
You could always upgrade to the new amon ra and then let it partition the sd card for you.Then you can have all that free phone storage for whatever it is.Bext time just try to restrict yourself from posting in wrong section
-Best regards
IConrad01 said:
This is a question, and as such belongs in the Q&A section. You'll receive a better response to such things there.
The internal memory you're referring to is your /system partition.
It is where the entire OS is stored, basically. Which takes up, in your case, a whopping 55 MB (out of 70 MB).
If you //really// want more room, follow the Apps-2-SD tutorials out there. You'll get /plenty/ of space.
Click to expand...
Click to collapse
Thank you for the quick response. Is there a way to move this thread?
Also is there a better ROM that will take up less memory? I like this version but obviously it is wayy to large.
Anyone else running cyanogen 4.7.2.1 having this issue?
Most people using the Cyanogen ROM also utilize A2SD. Partition your SD card and you'll get more room.
pewterwest said:
Anyone else running cyanogen 4.7.2.1 having this issue?
Click to expand...
Click to collapse
There is no issue, you just don't have an ext partition ergo, all applications are installed to your phone which is why you have low phone memory.
pewterwest said:
Thank you for the quick response. Is there a way to move this thread?
Also is there a better ROM that will take up less memory? I like this version but obviously it is wayy to large.
Anyone else running cyanogen 4.7.2.1 having this issue?
Click to expand...
Click to collapse
Hello! app2SD will put the apps to ext...Then you will have more memory, why do you think people use it? To save even more money on geico?
Go here for the amon recovery...
http://forum.xda-developers.com/showthread.php?t=566669
Hi, first of this has nothing to do with development, should be in Q&A. Please remember for next time
OK, when you're on a custom ROM, don't use factory reset. Instead boot in to the recovery image and perform a wipe from there, and that's exactly what I'd suggest. Be prepared to loose everything stored on the phones memory, but you can use a backup app from the market for that... No you really should way more space than that, I can't really explain why...
IConrad01 said:
This is a question, and as such belongs in the Q&A section. You'll receive a better response to such things there.
The internal memory you're referring to is your /system partition.
It is where the entire OS is stored, basically. Which takes up, in your case, a whopping 55 MB (out of 70 MB).
If you //really// want more room, follow the Apps-2-SD tutorials out there. You'll get /plenty/ of space.
Click to expand...
Click to collapse
The phone has two main partitions: /system and /data. It isn't /system that's filling up, it's /data (which makes sense...). The phone can't write to /system when it's unrooted, so it's not possible to store files there...
Everyone is trying to help but for a noob it can be a bit too much...4.2.7.1 is the best Rom available so keep that....RA Recovery is the best way to set up your memory card to accept your apps and keep them there freeing up a ton of space on the phone....simple way to fix is....Just format you sdcard with EXT3 using the RA-recovery v1.5.1 then once your card is formatted just reboot and Cyanogen's rom will move all the apps for you.....will not need to wipe any info on the phone that way...done it many times......Pm me if you need help!!!!
EDIT:
some threads to help:
Ra - Recovery:
http://forum.xda-developers.com/showthread.php?t=566669
OR-
[REF] manual partition of sdcard w/parted,goto ext3/4 from adb. no liveCD req'd
http://forum.xda-developers.com/showthread.php?t=534714
Young Money. Cash Money.
(partition sd card)
The non rooted standard T-Mobile rom is about the same size and will give you about the same amount of free space. There could be a more barebones rom but I think it's just a lot easier to run Apps2SD then to create a rom that might get you an extra 10mb of internal space. This is the fault of the internal memory on the phone being small. The only way to fix that is getting Apps2sd running which if you make a partion of 100mb should be enough to install all the apps you need. Getting a larger SD card for $10 is also another option so you wont have 1/10th of your sd cards storage gone.
djdarkknight96 said:
Everyone is trying to help but for a noob it can be a bit too much...4.2.7.1 is the best Rom available so keep that....RA Recovery is the best way to set up your memory card to accept your apps and keep them there freeing up a ton of space on the phone....simple way to fix is....Just format you sdcard with EXT3 using the RA-recovery v1.5.1 then once your card is formatted just reboot and Cyanogen's rom will move all the apps for you.....will not need to wipe any info on the phone that way...done it many times......Pm me if you need help!!!!
EDIT:
some threads to help:
Ra - Recovery:
http://forum.xda-developers.com/showthread.php?t=566669
OR-
[REF] manual partition of sdcard w/parted,goto ext3/4 from adb. no liveCD req'd
http://forum.xda-developers.com/showthread.php?t=534714
Click to expand...
Click to collapse
Guys thank you very much for your help..... i partioned my sd and now i have 58.8 MB free on internal.... you guys are great.
Is there anything else i can do besides rooting, apps2sd and overclocker to make even faster?
pewterwest said:
Guys thank you very much for your help..... i partioned my sd and now i have 58.8 MB free on internal.... you guys are great.
Is there anything else i can do besides rooting, apps2sd and overclocker to make even faster?
Click to expand...
Click to collapse
You can always try different roms. CM is good and fast, but maybe try dwang 1.13 or Wesgarner version. wg is based on CM. I find it faster and more stable but this is just my opinion. if you back everything up with nandroid and some app like mybackup, you can flash all you want. you'll be able to get everything back with a nandroid/mybackup restore. try different stuff out and figure out what you like!
I've posted this question to the General section of the forum but with no answer. Mod please excuse me but I refuse to think that there is NO answer available.
I've installed a Micromod ROM , repartitioned my SD card and created an ext3 partition, so I do not have to worry about running low on memory on my phone. But I still see the amount of available Internal Memory going down. How is that ? I was under the impression that apps2ext would automatically put every app in the ext3 partition, isn't it the case ? Should I enable or change something in the setting of my phone ? Right now I have 107 mb available, going down.....
P_
pakalrtb said:
I've posted this question to the General section of the forum but with no answer. Mod please excuse me but I refuse to think that there is NO answer available.
I've installed a Micromod ROM , repartitioned my SD card and created an ext3 partition, so I do not have to worry about running low on memory on my phone. But I still see the amount of available Internal Memory going down. How is that ? I was under the impression that apps2ext would automatically put every app in the ext3 partition, isn't it the case ? Should I enable or change something in the setting of my phone ? Right now I have 107 mb available, going down.....
P_
Click to expand...
Click to collapse
Is dalvik cache also moved?
And data from those apps are still saved to the data partition. Only the apps (and depending on the configuration, dalvik cache) are moved to the ext3 partition. There's also the possibility of bad sectors.
You might want to ask these things in the thread of the ROM you've installed in the future. Chances are the dev would answer, and you wouldn't have to get riled up.
pakalrtb said:
I've posted this question to the General section of the forum but with no answer. Mod please excuse me but I refuse to think that there is NO answer available.
I've installed a Micromod ROM , repartitioned my SD card and created an ext3 partition, so I do not have to worry about running low on memory on my phone. But I still see the amount of available Internal Memory going down. How is that ? I was under the impression that apps2ext would automatically put every app in the ext3 partition, isn't it the case ? Should I enable or change something in the setting of my phone ? Right now I have 107 mb available, going down.....
P_
Click to expand...
Click to collapse
app data goes to internal, while the actual apk goes to the ext(sd card).
this doesnt belong in development. this has been answered many of times.
Is it possible to flash Firerat's Custom MTD Partitions and then flash a Nand backup instead of flashing the rom and starting from scratch???
I'm thinking of using Firerat's Custom MTD Partitions but i dont want to go through the hassle of reinstalling all my apps and restoring all my setting to what they currently are.
I'm running aospCMod 2.3.3 GB (3/26/'11) on CDMA Hero
thanks for any help and responses!
Restoring your nand backup with standard partitions won't work after creating firerat's custom partitions. I don't think they will, anyway. You can try it. More than likely the nandroid restore won't work (might tell you there's not enough space in one of the partitions) or it won't fully boot, and you'll have to start from scratch.
Titanium Backup makes this process pretty painless, minus the clicking install, install, install... it even saves app settings and preserves Market links.
illdourmum said:
Is it possible to flash Firerat's Custom MTD Partitions and then flash a Nand backup instead of flashing the rom and starting from scratch???
I'm thinking of using Firerat's Custom MTD Partitions but i dont want to go through the hassle of reinstalling all my apps and restoring all my setting to what they currently are.
I'm running aospCMod 2.3.3 GB (3/26/'11) on CDMA Hero
thanks for any help and responses!
Click to expand...
Click to collapse
You can restore a nand backup if the new partitions have enough space. I will do this if I'm shrinking my system partition to accommodate a smaller ROM that I had already flashed. I haven't noticed any issue when doing it. Just follow the steps, and make sure your partitions are in line with what you need.
thanks for your reply!
I'll wait till a new realease of aospCMod is out then i'll try it out.
illdourmum said:
thanks for your reply!
I'll wait till a new realease of aospCMod is out then i'll try it out.
Click to expand...
Click to collapse
No problem. I'm running aospCMod. I had my partitions set at 130 10. I set them a bit conservative to allow for all the updates that were coming out. Since we haven't gotten an update since 3/26, and I was suffering serious flash withdrawals, I nanded my 3/26 install, then reflashed new partitions of 90 4, then restored my back up. 90 4 is still a bit conservative, and you can probably go to 72 2 depending on the size of the GAAPs and tweaks you flash with the rom.
Enjoy the mod, the increased data size is incredible.
illdourmum said:
Is it possible to flash Firerat's Custom MTD Partitions and then flash a Nand backup instead of flashing the rom and starting from scratch???
I'm thinking of using Firerat's Custom MTD Partitions but i dont want to go through the hassle of reinstalling all my apps and restoring all my setting to what they currently are.
I'm running aospCMod 2.3.3 GB (3/26/'11) on CDMA Hero
thanks for any help and responses!
Click to expand...
Click to collapse
And just a word of warning make sure you have atleast a class 6 sd card. Someone told me itll work with any class (i had a class 2) and eventually re flashing the MTD boot killed my sd card. Soooo just throwing my 2 cents out there. Its a great method though =]
Sounds like a bad SD card or something, mod has (or shouldn't..) absolutely no effect on your card at all.
stayclean said:
Sounds like a bad SD card or something, mod has (or shouldn't..) absolutely no effect on your card at all.
Click to expand...
Click to collapse
Really now? Cause i heard it could effect that.
Which doesnt make sense cause it uses internel space. I guess Partioting would effect it but thats different. Perhaps youre right. Ill look into it =]
The OP of the Firerat thread explains what it does even. Doesn't do anything to the sd card. Or shouldn't. Have used it many times since the summer with absolutely no ill effect.
stayclean said:
The OP of the Firerat thread explains what it does even. Doesn't do anything to the sd card. Or shouldn't. Have used it many times since the summer with absolutely no ill effect.
Click to expand...
Click to collapse
Ill give you a thanks on your meter man, i appreciate taking the time for noobs =]
808Bill said:
No problem. I'm running aospCMod. I had my partitions set at 130 10. I set them a bit conservative to allow for all the updates that were coming out. Since we haven't gotten an update since 3/26, and I was suffering serious flash withdrawals, I nanded my 3/26 install, then reflashed new partitions of 90 4, then restored my back up. 90 4 is still a bit conservative, and you can probably go to 72 2 depending on the size of the GAAPs and tweaks you flash with the rom.
Enjoy the mod, the increased data size is incredible.
Click to expand...
Click to collapse
What do the numbers in the text file mean? mine is set to the OP settings of "102 2".
illdourmum said:
What do the numbers in the text file mean? mine is set to the OP settings of "102 2".
Click to expand...
Click to collapse
The first number specifies the size (in MB) to make the system partition. The second number specifies the size (in MB) to make the cache partition. Taking into account the size of all other partitions (bootloader, boot, recovery, misc), any leftover space after that is pushed into the data partition.
So your resulting data partition will be (The default size of the data partition + the size shrunk from the system partition + the size shrunk from the cache partition).
Thanks for clearing that up for me.
Sent from my HTC Hero CDMA using Tapatalk
So I made a Nand Backup, Flashed FR's Mod 1.5.3 set to 105 5, then restored the Nand and flashed the FR_boot.zip and it WORKED!!!
this is AMAZING... now i have a total of 368MB of internal memory (233MB free)
Thanks for the help guys!!!!
I just joined the firerat bandwagon, it's kinda cool
jasonmaloney said:
The first number specifies the size (in MB) to make the system partition. The second number specifies the size (in MB) to make the cache partition. Taking into account the size of all other partitions (bootloader, boot, recovery, misc), any leftover space after that is pushed into the data partition.
So your resulting data partition will be (The default size of the data partition + the size shrunk from the system partition + the size shrunk from the cache partition).
Click to expand...
Click to collapse
In your opinion should i leave those number as they are, or isthere a benefit by changing them. Especially if i dont know exactly what changing those numbers would do haha
davidevan said:
In your opinion should i leave those number as they are, or isthere a benefit by changing them. Especially if i dont know exactly what changing those numbers would do haha
Click to expand...
Click to collapse
what i did to determine the numbers was check the size of /system in my latest Nand backup and gave it some extra head room.
i may change it again to a larger number as i feel that i didnt provide enough of this "head room" for /system
illdourmum said:
what i did to determine the numbers was check the size of /system in my latest Nand backup and gave it some extra head room.
i may change it again to a larger number as i feel that i didnt provide enough of this "head room" for /system
Click to expand...
Click to collapse
cool man, ill probably fiddle with it myself. If you come to good Partioning size, please do tell. id be curious to know what you use =]
davidevan said:
cool man, ill probably fiddle with it myself. If you come to good Partioning size, please do tell. id be curious to know what you use =]
Click to expand...
Click to collapse
once i get home from school, i'll be playing around with the settings some more. i'll let you know what happens. but i would suggest you take a second opinion as i'm just a novice at this and just jumped on the FireRat's Mod bandwagon myself.
Oh of course. ive been using for about a month maybe? i just like everyones views and different experiences
"Its recommend to partition your sdcard before flash"
whats the use?..........
you can use cwm with the phone or minitool partition wizard with the pc
venkatarajeev131 said:
"Its recommend to partition your sdcard before flash"
whats the use?..........
Click to expand...
Click to collapse
the rom maybe containing a2sd script that's why it need a second partition do it there is no harm
What size this partition should be? 100MB is enough?
felipevsw said:
What size this partition should be? 100MB is enough?
Click to expand...
Click to collapse
atleast 512 mb for ext parttion you should create a swap partition of 256 mb,
swap will replace the ram according to the swappiness set by you
dhlalit11 said:
atleast 512 mb for ext parttion you should create a swap partition of 256 mb,
swap will replace the ram according to the swappiness set by you
Click to expand...
Click to collapse
So it should be 2 partitions: one with 512 MB and another with 256 MB... The one with 512 should be formatted ext4? and the other swap (of course)?
felipevsw said:
So it should be 2 partitions: one with 512 MB and another with 256 MB... The one with 512 should be formatted ext4? and the other swap (of course)?
Click to expand...
Click to collapse
Set it as ext2, it's faster.
---------- Post added at 08:15 PM ---------- Previous post was at 08:06 PM ----------
dhlalit11 said:
atleast 512 mb for ext parttion you should create a swap partition of 256 mb,
swap will replace the ram according to the swappiness set by you
Click to expand...
Click to collapse
Here's some info on how Linux (and thus Android) uses swap. http://www.linux-tutorial.info/modules.php?name=MContent&pageid=89
I wouldn't bother with it on a phone since Linux will just swap unchanged files right back to where they are on the phone storage without the need for a swap file and since it's unlikely that you'll ever multitask large user files on it there really is no need for it.
felipevsw said:
So it should be 2 partitions: one with 512 MB and another with 256 MB... The one with 512 should be formatted ext4? and the other swap (of course)?
Click to expand...
Click to collapse
swap is optional but it's good to have
dhlalit11 said:
swap is optional but it's good to have
Click to expand...
Click to collapse
For what? Who is changing large data files on their phone? In all likelihood it will cost you more memory to have a swap file than it will save you memory since it won't be used.
Linux won't use it at all if the file in memory hasn't changed since it was last read from storage, it will just swap it back to where it was last read, that is, if you have an app open and more memory is needed linux will first check to see if the file has been changed since last read and since it's an app it will just link it back to where it was read from in the first place rather than to put yet another copy in swap.
Jinxxed said:
For what? Who is changing large data files on their phone? In all likelihood it will cost you more memory to have a swap file than it will save you memory since it won't be used.
Linux won't use it at all if the file in memory hasn't changed since it was last read from storage, it will just swap it back to where it was last read, that is, if you have an app open and more memory is needed linux will first check to see if the file has been changed since last read and since it's an app it will just link it back to where it was read from in the first place rather than to put yet another copy in swap.
Click to expand...
Click to collapse
am not talking about swap file am talking about swap partition and if you think there is no need then why are there paid apps like swapper for root and why are people paying for them.
suppose you are playing shadow gun with help of cf3d after the play you find that all the app like launcher background working apps are stopped due to low ram but if you have swap then the app's memory will move to swap partition and it will not close
when I had mini I had a swap partition of 512 MB and it was really working and if you think the life of SD will decrease then you should know that it has a veeeeeery lil effect on life so don't worry there is no harm
Thank u for this useful thread..
dhlalit11 said:
am not talking about swap file am talking about swap partition and if you think there is no need then why are there paid apps like swapper for root and why are people paying for them.
suppose you are playing shadow gun with help of cf3d after the play you find that all the app like launcher background working apps are stopped due to low ram but if you have swap then the app's memory will move to swap partition and it will not close
when I had mini I had a swap partition of 512 MB and it was really working and if you think the life of SD will decrease then you should know that it has a veeeeeery lil effect on life so don't worry there is no harm
Click to expand...
Click to collapse
Whether you use a swap file or partition is irrelevant, Linux can use either and they work exactly the same.
In your example, all the apps would be swapped RIGHT BACK TO WHERE THEY ARE STORED since they did not change since last read, the swap would be unused and the apps would still be swapped.
I don't know if it's that you fail to comprehend the simple subject or refuse to read both what i post and what i link to but you are not understanding this.
Of course it won't affect the SD cards lifetime, it won't be used.
I have to be honest and say I am a bit baffled when I look at the 'Storage' breakdown on my Note. So I have a few questions as to how RAM and flash memory work together.
From looking at some threads on the forums here I understand of the 16GB of flash memory on my Note :
2GB is reserved for the ROM
2GB is reserved for apps, actually my phone says I have 1.97GB
The rest (11.06 GB) as general storage e.g. music, movies, documents, etc.
Wondering what happened to the other c1MB as I have only accounted for 15GB?
So in settings when I go to 'Storage' it is broken down into 2 sections, 'Device Memory' and 'USB Storage' now I find this screen a little bit confusing. So, is the 'USB Storage' the 11.06GB flash memory I have for general storage and the 'Device Memory' the 2GB (1.97GB) of flash memory for storing apps I download?
I find it strange that my phone says I have 1.97GB device memory (flash memory) total for apps, and my apps seem to be taking up 1.47GB but I only have 228MB available. That doesn't add up?? Even more confusing is the fact that when I try to download a 40MB app I am told 'Can't download to default location'!!
Also do I ever see what the 1GB of RAM is up to on my phone or is this managed secretly by Android?
Thanks for anyone willing to set me straight
*Bump*
Anyone willing to help pls
Ram can't be accesed by u that's what your device uses to store processes so u can't save files or anything on it but anyways assuming your on gingerbread to "see what your ram is up to" go into system settings/applications/running services this what u see is runnning processes stored on your ram
Your note then has system internal and external memory
System memory is where your rom and system apps are installed (platystore youtube etc) you can't access this unless your rooted
Internal memory is the memory u get with your phone where u can store pics movies files etc and install apps I don't own this device but i doubt that it allocates a section of internal memory for apps
Then there's USB or external storage which is your memory card or flash drive (yes u can do that) u can store apps (which have app2sd support unless your rooted then u can move everything) movies files whatevever you want
_____________________________________
This post uses the patented TingTingin®™ method I would teach it to you but you are not yet worthy (come back in a hundred years)
Ferg8080 said:
I have to be honest and say I am a bit baffled when I look at the 'Storage' breakdown on my Note. So I have a few questions as to how RAM and flash memory work together.
From looking at some threads on the forums here I understand of the 16GB of flash memory on my Note :
2GB is reserved for the ROM
2GB is reserved for apps, actually my phone says I have 1.97GB
The rest (11.06 GB) as general storage e.g. music, movies, documents, etc.
Wondering what happened to the other c1MB as I have only accounted for 15GB?
So in settings when I go to 'Storage' it is broken down into 2 sections, 'Device Memory' and 'USB Storage' now I find this screen a little bit confusing. So, is the 'USB Storage' the 11.06GB flash memory I have for general storage and the 'Device Memory' the 2GB (1.97GB) of flash memory for storing apps I download?
I find it strange that my phone says I have 1.97GB device memory (flash memory) total for apps, and my apps seem to be taking up 1.47GB but I only have 228MB available. That doesn't add up?? Even more confusing is the fact that when I try to download a 40MB app I am told 'Can't download to default location'!!
Also do I ever see what the 1GB of RAM is up to on my phone or is this managed secretly by Android?
Thanks for anyone willing to set me straight
Click to expand...
Click to collapse
you are a lil bit lucky than me.. my 1.97GB device memory is only used around 0.8GB but the available space is only around 200mb:crying:... and the droid started to give me storage space running out error...
Ram can't be accesed by u that's what your device............
Click to expand...
Click to collapse
Yes I guessed that, but when I view RAM stats I get:
604MB used and 260MB free, yet I have 1GB RAM. Does anything add up memory wise on this phone?!
System memory is where your rom and system apps ...
Click to expand...
Click to collapse
Again I guessed there was an area reserved for Rocket ROM and the associated system apps, I assume this is called the system partition. And I believe this is 2GB!?
Internal memory is the memory u get with your phone where u can store pics movies files etc and install apps I don't own this device but i doubt that it allocates a section of internal memory for apps
Click to expand...
Click to collapse
I seem to have 'device memory' which is some kind of App partition of about 2GB but again its telling me I have over 200MB free but when I try to install another app I am told I have run out of space!?
I also seem to have USB storage which is referring to the remaining general storage partition which is about 11GB which I can't install apps to.
Thank you for trying to answer my query but I'm afraid I'm none the wiser. I though it would be easy to find a Wiki on the device which would explain how the 16GB is partitioned up and used like a memory map but I can't find anything. And the figures don't add up.
Isn't anyone else curious?
Anyone else ain't curious because they use the search tool
But since xda is all about helping eachother, here you go :
http://forum.xda-developers.com/showthread.php?t=1667886
All info you seek is in that thread
friedje said:
Anyone else ain't curious because they use the search tool
But since xda is all about helping eachother, here you go :
http://forum.xda-developers.com/showthread.php?t=1667886
All info you seek is in that thread
Click to expand...
Click to collapse
Okay smart ass let me point out a few things....
I am a complete novice to Unix and how their filesystems are organised but I am trying.
Pointing me to a thread of partition tables with what I presume are hex values that I've never seen before is a bit too low level and confusing.
I am not asking for a programmers spec table for the Note memory just a simple breakdown of partitions, GB/MB sizing and what the purpose of the partition is?
And if you don't know enough to do that then don't bother posting because your not being helpful and your post has as much value as a troll
Actually my post was extremely helpful, and just saved you the bother to search for yourself. However 'mr. smart ass' assumed you had a bit of basic knowledge of the subject, which you just made clear isn't exactly the case.
So to try and tell it disney style :
Your phone has 1Gb of ram, used to run system and apps in realtime.
Android manages it and you can look at what is currently running and
if that makes you happy, even kill processes in taks manager.
Then your phone has flash memory, in general 16Gb, allthough 32Gb
devices exist.
Your Total 16Gb of memory actually has 12 partitions that each have
their proper reason of existence.
Number Size Name
1 21.0MB EFS: Holds device specific info like imei number
2 1311kB SBL1 : 1st bootloader, the devices uses this to boot
3 1311kB SBL2 : 2nd bootloader, see above
4 8389kB PARAM : Forgot what they put inside, guess you will have to read up.
5 8389kB KERNEL : Here goes your Hardware layer, drivers etc....
6 8389kB RECOVERY : here goes the little program to recover your phone when it's messed up
7 210MB CACHE : guess the name says it all
8 16.8MB MODEM : here goes the radio program for voice+data
9 893MB FACTORYFS : here go your android system files
10 2147MB DATAFS : here goes the data for your android system, like your apps
11 11.9GB fat32 UMS : your famous internal storage free to fill with disney movies
12 537MB HIDDEN : space reserved for samsung to put their bloatware
Hope the above is mashed enough to understand