Wednesday, June 30, 2010

How to edit a read-only /etc/fstab during single-mode on CentOS

If somehow like me, you edited the /etc/fstab wrongly and have to enter the maintenance mode to rescue it but was not able to edit it.

For this blog entry, I'm writing on using a Linux CD to do a rescue.

Step 1: Put in the CentOS 5.4 CD and boot to CD

Step 2: Press F5 and type linux rescue at the boot prompt
linux rescue

Step 3: When given the command prompt again after a series of screen
# vi /mnt/sysimage/etc/fstab
Do the necessary changes to /etc/fstab
Step 4: Do the reboot
# reboot


Gutherzig said...

simply remount your root partition using this command :
mount -n -o remount /
then it's now editable :)

Unknown said...

Thanks "mount -n -o remount /" saved me a lot of time!

kittycool said...

Wow! Thanks for the tips!