Executing commands in ADB Shell

[Guest isambard]

i wanted to try to directly dump a partition from an ADB shell with command:

dd if=/dev/block/mtdblock1 of=/sdcard/adb.img

but get error:

dd: /dev/block/mtdblock1: Input/output error

anyone know how this can be acheived?

[Guest Arr Too]

i wanted to try to directly dump a partition from an ADB shell with command:

dd if=/dev/block/mtdblock1 of=/sdcard/adb.img

That's boot, isn't it? Try:

dd if=/dev/mtd/mtd1 of=/sdcard/dump_boot.img bs=4096

(And remember not to use dd to dump the YAFFS2 partitions!)

[Guest isambard]

That's boot, isn't it? Try:

dd if=/dev/mtd/mtd1 of=/sdcard/dump_boot.img bs=4096

(And remember not to use dd to dump the YAFFS2 partitions!)

actually - a good point. is there already a tool to make a yaffs2 dump e.g. for /system partition?

[Guest isambard]

found something called nandread. will try it out...

[Guest isambard]

bleh. why am i bothering? i'll just tar the files.

[Guest Tom G]

actually - a good point. is there already a tool to make a yaffs2 dump e.g. for /system partition?

dd needs a blocksize.

eng builds include a tool called dump_image, but I don't think its in user builds. You should be able to pull a bin from somewhere (its in clockworkmod).

cat works for boot/recovery, but I dont think it will work for the yaffs partitions.

cat /dev/mtd/mtd1ro > /sdcard/boot.img

[Guest isambard]

here's what i'm doing for the system partition.

tar -cf - /system/ |lzop > /sdcard/system.tar.lzo

my dd wasn't working because i got the device name wrong. i typed ls /dev/mt* and got the following which always tricks me:

/dev # ls /dev/mt*

mtd0 mtd1 mtd2 mtd3 mtd4 mtd5 mtd6 mtd7

mtd0ro mtd1ro mtd2ro mtd3ro mtd4ro mtd5ro mtd6ro mtd7ro

[Guest isambard]

while we're on the subject, can someone explain why this doesn't work:

ls -Ss /system/app > /sdcard/applist.txt

[Guest Tom G]

while we're on the subject, can someone explain why this doesn't work:

ls -Ss /system/app > /sdcard/applist.txt

It works for me. If you're doing it from recovery did you mount system and sdcard first?

[Guest isambard]

It works for me. If you're doing it from recovery did you mount system and sdcard first?

hmm. i remapped the ls command to use busybox and for some reason it seems that the busybox ls doesn't produce any output when piped...

[Guest Tom G]

hmm. i remapped the ls command to use busybox and for some reason it seems that the busybox ls doesn't produce any output when piped...

I was using busybox when I tested it.

[Guest Arr Too]

found something called nandread. will try it out...

I've not used it, but I think you can use nanddump (from the MTD Utils):

http://processors.wiki.ti.com/index.php/Mtdutils

[Guest isambard]

I was using busybox when I tested it.

thanks. what i meant was that i hardlinked ls to the busybox binary. i guess the original was either a standalone exe or linked to toolbox.