Hosed fstab, won't boot how to edit?

[Robert Moskowitz]

Ron Siven wrote:
> Robert Moskowitz wrote:
>> So I mistyped noatime in /etc/fstab; wished there was a way to test 
>> this first!
>>
>> Anyway, since this is my ASUS Eee and my swap is on the SD card, by 
>> pulling the SD card the boot halts and puts me into Repair Filesystem 
>> mode.
>>
>> Thing is /etx fstab is readonly. vi fstab won't let me save the file.
>>
>> I really don't want to do a complete reinstall yet. I want to buy a 
>> 8Gb SD card first (and next time I am putting /usr on the SD card). 
>> So how can I edit this?
>>
>>
> If this is the same as rescue mode booting from the CD/DVD, the file 
> system is mounted to /mnt/sysimage. To get root access, use chroot 
> /mnt/sysimage. Then use vim to edit /etc/fstab 
The prompt is:

(Repair filesystem) n #

Where n is a command number it seems. I had to provide the root password 
to get into this mode.

As for 'chroot /mnt/sysimage', I get:

chroot: cannot change root directory to /mnt/sysimage: No such file or 
directory