Sanjay Arora wrote: > Hello all > > Nill experience with LVM. Have a Default Centos 4.4 install updated till > a week ago with three HDDs. System's not booting up since my staff > pulled out the plug due to a short circuit nearby. > > Machine is a PIII 550 MHz, with 3 HDDs 40 GB, 120 GB (Actually is bigger > but my bios detects only upto 120 GB) & 20 GB...about half filled with > data & the backup server taken out in the short circuit. > > Upon bootup, the system starts with root, kernel & initrd notices, then > says Uncompressing Linux then spits out the Error....CRC Error -- System > Halted. > > Booted from the CD in reinstall mode where anaconda looks for linux > installations on the HDD and asks about upgrade, reinstall or fresh > partition/create partition/delete partition for reinstall, but the > installer does not detect any linux installation on the HDD. I aborted > at that stage. > > Now my system is a default linux installation where I have used the > autopartitioning done by the system (LVM2) and almost all of my data is > either in /home directory or couple of directories in the / > > I am willing to do a reinstall if my data is preserved. What do I need > to do to diagnose the problem? and pointers to recovering from this > problem and various tradeoffs. Can't lose data, as already have lost > backup server (smps, motherboard, hdd circuitry all short-circuited, so > no hope there). LVM howto was not much of a help as it seems to mostly > have how to expand or reduce lvm and similar issues. > > Please keep in mind that I am a user and not sys-admin, though I can use > command-line, if instructions & how-tos are there. > > Please help. > > With best regards and thanks in anticipation. > Sanjay. > The steps I would try are: * boot in rescue mode (linux rescue) * use lvscan to try to find LVM groups * Then activate the volume group by vgchange -a y You can see for yourself were things start to fail. Good luck, Theo