Develop Bugs

Can't mount block /dev/block/mmcblk0

Basically, every time I go to clockwork recovery and try to wipe data and cache, I get this error.
cant mount block /dev/block/mmcblk0
I have reformatted many times my sd, even with rom manager but with no luck.
Still get the same error.
From what I understand, if I flash a rom that supports aps2sd+ then I cant install any apps from market because it cannot mount my sd card.

You probably have an ext2 partition which clockwork can't handle. I had to convert mine to ext3 to be able to format it in recovery. Apps were still being saved there, though.
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jastonas said:
Basically, every time I go to clockwork recovery and try to wipe data and cache, I get this error.
cant mount block /dev/block/mmcblk0
I have reformatted many times my sd, even with rom manager but with no luck.
Still get the same error.
From what I understand, if I flash a rom that supports aps2sd+ then I cant install any apps from market because it cannot mount my sd card.
Click to expand...
Click to collapse
I had this problem while my ext was ext4. I had a ROM that was OK using ext4 but clockwork wouldn't back it up, so I reformated SD with ext3.
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pexon said:
I had this problem while my ext was ext4. I had a ROM that was OK using ext4 but clockwork wouldn't back it up, so I reformated SD with ext3.
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Click to expand...
Click to collapse
Everything ok now....
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[Q] Formatting problems

So i have a case. When i try to format/ reset factory settings via recovery i get this strange error that my sd-ext can't be formatted because of the /dev/block/mmcblk0 file existing. I don't know what to do. I have a stock sd card 2gb. Windows says that its 1.86GB. Any help?

Backup sdcard contents first.
Then don't format it from recovery. Just boot up the OS and format the memory card. But doing so deleted the extra partition also. It creates entire fat partition. Again you will have to repartition your sdcard to create ext again.
And if you still face errors, then there is a chance of sdcard being corrupted.
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I've formatted it many times. Even downloaded mini tool partition wizard home edition(gpardted thingy windows version). Its still 1,86GB there's no partitions. Only a FAT32 card.

For a 2GB card you can only use around 1.8x GB . So I think it is correct. I just thought you had issue in formatting ext partition.
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hang on... it doesn't allow you to format sd-ext because it doesn't exist.. EXT is a linux format, if your entire SD-Card is FAT-32 there's no EXT to format....

bortak said:
hang on... it doesn't allow you to format sd-ext because it doesn't exist.. EXT is a linux format, if your entire SD-Card is FAT-32 there's no EXT to format....
Click to expand...
Click to collapse
It says that some file DOES exist.
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quemmy said:
It says that some file DOES exist.
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Click to expand...
Click to collapse
If you haven't made an EXT partition on your SD-Card then you will not be able to format SD-EXT because there is nothing to format... it's simple logic ... you can't delete something that doesn't exist

It said it does exist. Well, meh. I bought a new card. 8gb kingston ^^ 1gb ex3 partition
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[Q] How can convect yyaffs2 to ext4?

i have use 4ext to partition the sdcard to ext4 and flash the rom.
After flash the rom, the 4ext still check my desire (system, date, cache) already in yaffs2 and the capacity still no more add by my ext4 partition.
Do i need to format the (system, date, cache) to ext4? how can i do it?
Please help.
Thanks!!!!!!

Not possible to convert the yaffs2 fs to ext on Desire - all 4EXT recovery can do is convert sd card ext.

Hi beachcomber,
Yes i already make partition 1.5G sd-ext4 on my 16G SD card.
but how can mount my 1.5G sd-ext4 on the data yaffs2 fs, the capacity still in 250MB.
How can i increase the data capacity to 1.5G??
Thank so much~~

kevin1623 said:
Hi beachcomber,
Yes i already make partition 1.5G sd-ext4 on my 16G SD card.
but how can mount my 1.5G sd-ext4 on the data yaffs2 fs, the capacity still in 250MB.
How can i increase the data capacity to 1.5G??
Thank so much~~
Click to expand...
Click to collapse
Do you mean how do you make use of the Ext partition on your SD card? What Rom are you using? Some Roms you need to enable this separately, others have it built-in.
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beachcomber said:
Do you mean how do you make use of the Ext partition on your SD card? What Rom are you using? Some Roms you need to enable this separately, others have it built-in.
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Click to expand...
Click to collapse
Yes, i'm useing Runnymede AIO V6.1.1 Special Edition [Beta].

Not flashed that Rom before. Have you followed the right instructions for the install? Although 4Ext seems to correctly partition, would recommend using Gparted as it's dedicated Linux partitioning tool.
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kevin1623 said:
Yes, i'm useing Runnymede AIO V6.1.1 Special Edition [Beta].
Click to expand...
Click to collapse
If you have the stock HBOOT you cannot use the AD2SDX wich use the se-ext as internal memory (you need cm7r2 HBOOT); instead you get the standard a2sd wich move apks to sd-ext without you notice it.

[Q] 4EXT recovery format SD-EXT help

When I format my SD-EXT on 4EXT it erases all my information on my SD-card. When I try to install Runny Rom v5.5 it gets stuck on the SD partition part. I do a battery pull and check my SD card and all my files are gone

You don't say if you have two partitions on your SD card or not. You've got to have two partitions otherwise you won't have it working properly. The first one should be normal FAT32 and the second one EXT3 or EXT4 depending on the requirements of the ROM you want to flash. The best way to achieve this is to use gParted on a normal PC. Then you can use 4EXT on your phone to manipulate the SD-EXT part of your SD card, eg formatting it or converting between different types of EXT partition. This is the part where your apps data, cache, actual apps, dalvick cache etc. will be kept depending on your settings. Leave FAT32 partition alone.
If you are installing your ROM from the phone then the necessary file should be placed in FAT32 partition. Just remember the path where you copied it. You will need this when you use 4EXT to install the zip file.
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Make sure you have two partitions: FAT32 + EXT4 (size at least 1 GB). Also make sure that they are correctly aligned.
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format sd card

hi i use the wipe script from ARHD how can i format to default partition format the sd card?
using cwm to format or there is another method to format the sd card?

after format will work device like before or need to reflash rom or all apps reinstall?

The SD card is pretty separate from other ROM stuff. Apps have data on there as well as photos, etc.
You can format from CWM or from within the ROM, or mount as USB and format it.