Turning off ext4 journal
Posted: Sun May 01, 2011 7:51 pm
I am running the Natty 11.04 Joggler v1.0 ext4 image and it is brilliant (thanks Buzz!). However, I am having difficulty disabling the ext4 journal. I have tried the following:
1. Booting a pc with an Ubuntu live disc.
2. Plugging in the Joggler USB drive.
3. Unmounting the Joggler drive.
4. Running disk utility to find that the Joggler drive is /dev/sdc
5. Running this command in Terminal: tune2fs -O ^has_journal /dev/sdc3
However, the tune2fs command does not run and I receive the following error:
Permission denied while trying to open /dev/sdc3
Couldn't find valid filesystem superblock.
How do I fix this so that I can run tune2fs to disable the journal?
Apologies if this is a very basic question (I am a linux novice).
Thanks!
Dan
1. Booting a pc with an Ubuntu live disc.
2. Plugging in the Joggler USB drive.
3. Unmounting the Joggler drive.
4. Running disk utility to find that the Joggler drive is /dev/sdc
5. Running this command in Terminal: tune2fs -O ^has_journal /dev/sdc3
However, the tune2fs command does not run and I receive the following error:
Permission denied while trying to open /dev/sdc3
Couldn't find valid filesystem superblock.
How do I fix this so that I can run tune2fs to disable the journal?
Apologies if this is a very basic question (I am a linux novice).
Thanks!
Dan