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I run nandroid with a new partitioned SD-card.
I partitioned the SD-Card under Windows to 28GB FAT32 and 2 GB Ext-2
The backup process nevertheless says
"E:can't mount /dev/block/mmcblk0p2 (file exists)
could not mount sd-ext. sd-ext backup may not be supported on this device"
any ideas?
It has to be EXT3. Not EXT2. I'd use the phone to create the partition then upgrade it to EXT3.
On a side note, I didn't know Windows could create an EXT partition as it's a Linux file system.
rolfd said:
On a side note, I didn't know Windows could create an EXT partition as it's a Linux file system.
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The same way that Linux supports Windows file systems like NTFS - additional drivers!
Regards,
Dave
foxmeister said:
The same way that Linux supports Windows file systems like NTFS - additional drivers!
Regards,
Dave
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Excellent, thanks for that Dave. You never stop learning in here
Forgive my noobness but what advantage does having the ext3 partition have? Is it required?
Thanks
rolfd said:
On a side note, I didn't know Windows could create an EXT partition as it's a Linux file system.
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I use a driver tweak to make my SD reader a HDD.
Then I just setup my SD card with ACRONIS TRUE IMAGE 2010. It let'S you install a new HDD with various file formats
Hello and thank you for trying to help. How do I remove my 512MB partition and the 32mb swapfile? Thanks in advance
Just format from settings.
Use something like DISKPART.
mercianary said:
Just format from settings.
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That will only format the FAT32 partition and not the EXT one.
Singh400 said:
That will only format the FAT32 partition and not the EXT one.
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Worked for me.
mercianary said:
Worked for me.
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If you check using Disk Management on Windows, you'll find the EXT is still there
Singh400 said:
If you check using Disk Management on Windows, you'll find the EXT is still there
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I'll take your word on that. I will have to look at my sdcard later.
Strange because my sdcard increased in size when I formatted.
Just looked.
No ext partition.
Maybe its different on different roms.
Apologies if this has been resolved before, but I've been seeing two download folders in my SD card "downloads" and "Downloads." I've tried deleting one but I get an error - this also confuses Recovery when I try to flash a file located in one of the directories it typically looks in the wrong one. Has anyone had this or resolved it?
pongalong said:
Apologies if this has been resolved before, but I've been seeing two download folders in my SD card "downloads" and "Downloads." I've tried deleting one but I get an error - this also confuses Recovery when I try to flash a file located in one of the directories it typically looks in the wrong one. Has anyone had this or resolved it?
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I have the issue and have just learned to deal with it. I don't really know when it why it happened, sometime around when I first flashed jellybean I think. Idk. Just letting you know you're not alone. Btw the "download" folder appears first in recovery. I move all my roms and kernels there. The "Download" is the folder all the general downloads end up in for me... at least I think... it's confusing but a sms issue to me.
DARKSIDE
I made a folder called Aaroms. It goes alphabetical and capital letters first so that folder is always on the top of the list. I then sort my roms mods and kernels with sub folders.
If you keep your (D)download folder clean and sorted it should be easy to know which one has what
Sent from my Galaxy Nexus using xda premium
This is just speculation, but...
1. I think the virtual sdcard (sdcard0) and its links exists to make the real "sdcard" (/data/media) look like fat to apps instead of ext, which it really is (because it doesn't have a separate partition to itself). Most apps only know how to write to fat on the sdcard.
2. To programs that expect to be writing to fat, "download" and "Download" are the same directory, so they can be careless how they spell it when they access it or create it. But since the real filesystem is ext, they get created as two different directories. Maybe through some case-checking bug in the virtual sdcard or some program that writes directly to /data/media.
3. What I wound up doing was taking all my data out of both directories, deleting one, and making sure the remaining one was named "directory". Then I put all my data back in that one and everything has been good since then.
Well this is Linux after all. Downloads != downloads
Sent from my Galaxy Nexus using xda premium
Need help too
pongalong said:
Apologies if this has been resolved before, but I've been seeing two download folders in my SD card "downloads" and "Downloads." I've tried deleting one but I get an error - this also confuses Recovery when I try to flash a file located in one of the directories it typically looks in the wrong one. Has anyone had this or resolved it?
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Click to collapse
I have the same issue. I have two Download folders. The thing is that the one with the small "D" (download), it is empty, and when I try to delete it, it always reappear.
Help!
this was anwsered like 2 days ago.
sent from my i9250
bk201doesntexist said:
this was anwsered like 2 days ago.
sent from my i9250
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I cant find the post telling the answer. Lol. The last post isbin october 2010.
strumcat said:
1. I think the virtual sdcard (sdcard0) and its links exists to make the real "sdcard" (/data/media) look like fat to apps instead of ext, which it really is (because it doesn't have a separate partition to itself). Most apps only know how to write to fat on the sdcard.
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I think that the symlinks are there just for backwards compability issues with apps, that look under /sdcard/ mount point. it doesn't have anything to do with fs, android never used fat, or ntfs; known fs in android are yaffs2, ext4 and maybe a few proprietary ones like sammy's rfs.
bk201doesntexist said:
I think that the symlinks are there just for backwards compability issues with apps, that look under /sdcard/ mount point. it doesn't have anything to do with fs, android never used fat, or ntfs; known fs in android are yaffs2, ext4 and maybe a few proprietary ones like sammy's rfs.
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Click to collapse
The real sdcards were formatted as fat, and most apps that used them to store data only knew how to read/write a fat fs. I found this out by creating a mountable volume on a real sdcard on my old phone. It mounted as a directory on the sdcard. If I formatted the volume as fat, all my apps could use it normally. If I formatted it as ext(anything), a few apps could use it but most could not.
The symlinks are for backwards compatibility, but I believe the fuse filesystem virtual sdcard0 exists to make ext4 look like fat to all apps and to windows.
Note that if the gnex "sdcard" had its own partition, it could be formatted as fat and mounted as USB external storage like a real sdcard. I don't know, but it seems like Google went out of their way to prevent that.
The Google line is that the gnex sdcard shares an ext4 partition to maximize space, ie no unused wasted space on two partitions. But that is pretty farfetched, since the number of problems caused by this arrangement is huge in proportion to the "space saved" which is negligible.
Obviously, the real reason for this kludged-up mess is to discourage local storage/backup and encourage cloud storage, which can then be monetized.
strumcat said:
The real sdcards were formatted as fat, and most apps that wrote data to it only knew how to write it to a fat fs. I found this out by creating a mountable volume on a real sdcard on my old phone. It mounted as a directory on the sdcard. If I formatted the volume as fat, all my apps could use it normally. If I formatted it as ext(anything), a few apps could use it but most could not.
The symlinks are the for backwards compatibility, but I believe the fuse filesystem virtual sdcard0 exists to make ext4 look like fat to all apps and to windows.
Note that if the gnex "sdcard" had its own partition, it could be formatted as fat and mounted as USB external storage like a real sdcard. I don't know, but it seems like Google went out of their way to prevent that.
The Google line is that sdcard shares ext4 partition to maximize space, is no unused wasted space on two partitions. But that is pretty farfetched, since the number of problems caused by this arrangement is huge in proportion to the "space saved" which is negligible.
Obviously, the real reason for this kludged-up mess is to discourage local storage/backup and encourage cloud storage, which can then be monetized.
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sure, i was talking about nand storage. still, if apps really depend on that to survive (said "fat compability"), it's unlogical to me coming from linux, where several fs can co-exist, as you may know.
if sdcard had its own partition like you say, and it could be formatted to fat, it would suck from a performance point of view, right? because its way slower than ext4 or yaffs2?
sent from my i9250
bk201doesntexist said:
sure, i was talking about nand storage. still, if apps really depend on that to survive (said "fat compability"), it's unlogical to me coming from linux, where several fs can co-exist, as you may know.
if sdcard had its own partition like you say, and it could be formatted to fat, it would suck from a performance point of view, right? because its way slower than ext4 or yaffs2?
sent from my i9250
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Sure, Android knows how to read/write fat as well as ext. But I guess the app devs figured sdcards would be fat forever. so they only included fat I/O in their apps.
Yes, ext4 is better than fat. But fat+mass-storage is far better and faster than ext4+fuse+mtp. For example, an sdcard backup from fat mounted as mass storage to a pc is much faster and more reliable than an sdcard backup using mtp. MTP backups are painfully slow and often won't even complete due to errors.
strumcat said:
Sure, Android knows how to read/write fat as well as ext. But I guess the app devs figured sdcards would be fat forever. so they only included fat I/O in their apps.
Yes, ext4 is better than fat. But fat+mass-storage is far better and faster than ext4+fuse+mtp. For example, an sdcard backup from fat mounted as mass storage to a pc is much faster and more reliable than an sdcard backup using mtp. MTP backups are painfully slow and often won't even complete due to errors.
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Well it still happens in 2017 running Android 7.1.2 lol
Sent from my SM-G930W8 using Tapatalk
Any benefit to formatting sd card ext2/ext4 or another file system?
Since mtp is now the default for connecting to the desktop, there is no compatibility concerns to keep fat32 or exfat (many of my computers are now Linux anyways)
Hopefully someone with more knowledge than me will answer this thread soon. But my understanding is that not all kernals support Ext 2/3/4. And I would prefer Ext 4 because its a Journaled file system which would result i less filesystem error. But that is assuming Journaling is enabled.
speedy1979 said:
Hopefully someone with more knowledge than me will answer this thread soon. But my understanding is that not all kernals support Ext 2/3/4. And I would prefer Ext 4 because its a Journaled file system which would result i less filesystem error. But that is assuming Journaling is enabled.
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I was under the impression that journalized files systems access the drive much more often and can wear out the drive because of the limited times you can read write to flash drives.
nutpants said:
I was under the impression that journalized files systems access the drive much more often and can wear out the drive because of the limited times you can read write to flash drives.
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Yes that is one of its downsides.
what is the best file format for sd card to be used in android system?
fat? fat 32? exFAT, NTFS?
what if i add my sd card to anderoid device and let device to format itt? or format first then add?
There is a thread about how to install an new super fast file system, but you need to flash a rom or be rooted or something have a search.
John.
Tinderbox (UK) said:
There is a thread about how to install an new super fast file system, but you need to flash a rom or be rooted or something have a search.
John.
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Click to collapse
im rooted
but i can not see thread ?
It`s not easy to find it was 3-4 weeks ago, I will have another look maybe somebody else knows were it is.
John.
alialexali said:
im rooted
but i can not see thread ?
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---------- Post added at 11:06 AM ---------- Previous post was at 11:02 AM ----------
I think i found it, see link below.
http://forum.xda-developers.com/galaxy-tab-s/general/guide-how-to-convert-to-f2fs-flash-t3139716
Also something else to have a look at.
https://www.tuxera.com/tuxera-exfat...write-performance-with-the-latest-sdxc-cards/
John.
Stick with exfat for compatibility
ashyx said:
Stick with exfat for compatibility
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can i use link2sd with exfat?
alialexali said:
can i use link2sd with exfat?
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Yes as long as your other partition is ext2, 3 or 4.
ashyx said:
Yes as long as your other partition is ext2, 3 or 4.
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i need to make ext for second portion
what app shall i use to make partition?
alialexali said:
i need to make ext for second portion
what app shall i use to make partition?
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Minitool partition wizard: http://www.partitionwizard.com/free-partition-manager.html
Use ext2.
http://forum.xda-developers.com/showthread.php?t=2236566
ashyx said:
Minitool partition wizard: http://www.partitionwizard.com/free-partition-manager.html
Use ext2.
http://forum.xda-developers.com/showthread.php?t=2236566
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Click to collapse
thankx
i did with Minitool but dose not have exfat option only fat 32 for first partion.
Fat32 is fine.
Windows can format to exfat.
This is a nice little format tool.
http://www.authorsoft.com/usb-disk-storage-format-tool.html
John.
USB? Does it actually work with flash cards not plugged into a USB device?
It works on my card reader built into my notebook.
John.
ashyx said:
USB? Does it actually work with flash cards not plugged into a USB device?
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What does it actually do that windows doesn't? It just seems like a frontend.
ashyx said:
Fat32 is fine.
Windows can format to exfat.
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i did all step several times but link2sd fails creating the script.
64 g microsd
first partition exfat (62 g)
secound partion ex2, ext4 neither work (1.5 g )
any sugestion?
alialexali said:
i did all step several times but link2sd fails creating the script.
64 g microsd
first partition exfat (62 g)
secound partion ex2, ext4 neither work (1.5 g )
any sugestion?
Click to expand...
Click to collapse
Are you using the latest version and what is the error?
ashyx said:
Are you using the latest version and what is the error?
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mount script canot be created
mount: invalid argument
link2sd 4.0.12
Just what the DOS head`s said when Windows was developed, it`s just a front end.
John.
ashyx said:
What does it actually do that windows doesn't? It just seems like a frontend.
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alialexali said:
mount script canot be created
mount: invalid argument
link2sd 4.0.12
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i change the sd card all ok
the problem was with sd card i gauss-
i have toshiba original 30 mb 64 g , but i dont now way it shows only 60 g? this not problem of link2sd windows also show only 60 g
where is the rest 4 g?