fsck.ext3 Unable to resolve 'Label=/'

[Curran, Dominic]

Hi

On first boot after installations I get this error
"fsck.ext3 Unable to resolve `LABEL=/`.
Give root password for maintenance
(or type Control-D to continue):
(Repair filesystem) 1 #

Some other web sites suggest changing the line in /etc/fstab from
LABEL=/ to /dev/sda7. 
But the 'Repair filesystem' is mounted read only so I can't edit any
files !?

Thanks
dom