Lanny Marcus wrote:

Booting from the CentOS 5.2 Installation DVD (or the first Installation CD), one can type "linux rescue" and then "chroot /mnt/sysimage" and have full root access to the OS on the HD. For future reference, I would like to know what I did wrong, the past couple of days, when trying to use the CentOS 5.2 i386 Live CD, for rescue. From a terminal, "su -" did not seem to get me root access to the hard drive. What command should I have used, with the Live CD? The access I had was read only. (As it turns out, I could have fixed the problem, without the LiveCD, but I didn't know that, 3 days ago.... :-) ) TIA. Lanny

Referring to one of your earlier posts,

[centos@localhost ~]$ mount /dev/mapper/livecd-rw on / type ext3 (rw,noatime) proc on /proc type proc (rw) sysfs on /sys type sysfs (rw) devpts on /dev/pts type devpts (rw,gid=5,mode=620) tmpfs on /dev/shm type tmpfs (rw) none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw) /dev/hdc on /mnt/live type iso9660 (ro) /dev/hda2 on /mnt/disc/hda2 type ext3 (ro) /dev/mapper/VolGroup00-LogVol00 on /mnt/lvm/VolGroup00-LogVol00 type ext3 (ro) sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)

the boot partition, /dev/hda2 was mounted Read-Only (ro). To work around that little problem, simply: # mount /dev/hda2 -o rw,remount which remounts the partition Read-Write so you can work with it instead of only observe. Now, I believe the Live CD is missing the chroot command. This means you have to do the "bookkeeping" manually. The grub.conf file (normally at /boot/grub/grub.conf) will now appear at /mnt/disc/hda2/grub/grub.conf. Note that there is no "/boot" in that path.

And yes, the farther you are from the monitor, the clearer it all becomes.