On Mon, 2006-03-27 at 21:43 -0600, Laurence Vanek wrote: > Greetings - > > To my surprise, fresh install of FC5 with RAID 1 configured at install > time went without a hitch. I have /dev/md0 defined on /boot > partitions. It boots fine with this setup. > > I had my FC4 system setup this exact way except I found that I had to > manually install grub on one of the disks to permit booting off either > one if the other is down. > > Does anyone know of a way to check for the presence of grub on each > drive (obviously its on hda since it boots presently) to see if this > needs to be done for FC5 also without powering down each drive in turn & > attempting to boot? ---- thought I should post against the right thread just an untested thought... bb if=/dev/sda of=/tmp/sda-bootblock.bin bs=512 count=1 bb if=/dev/sdb of=/tmp/sdb-bootblock.bin bs=512 count=1 diff /tmp/sda-bootblock.bin /tmp/sdb-bootblock.bin Thinking... - substitute different values for sda/sdb as fits - the first 512 bytes on each drive are the boot (perhaps less, someone will surely correct me...it might just be the first 256 or 384 bytes) - if they are the same (i.e. grub has been installed on both), there will be no diff otherwise... grub-install /dev/sdb Of course, the only way that you'll ever KNOW for sure that it's going to work is to do a real simulation, i.e. disconnecting one drive, then the other drive... Craig
