how do you save fstab file?

[sovid]

this is going to seem like a stupid question, but how do you save the fstab file when editing with vi /etc/fstab

[devils casper]

you must be logged in as root OR gain root privileges in terminal/konsole using sudo or su.
which distro are you using?

[sovid]

I am using Fedora Core 5.

I inserted a bad line in fstab and now the system wont boot up..
It asks for root password to do maintenance, but the fstab file displays as read-only.

Help!

[devils casper]

boot up from Installation CD/DVD and execute 'linux rescue' at boot: prompt. this will drop you at shell session. execute this

chroot /mnt/sysimage
vi /etc/fstab

edit fstab file and reboot.

[sovid]

how do you save it though?

[devils casper]

press i, edit file. press full colon ( : ). x and press 'Enter' key to save file.