On Tue, 2006-03-28 at 08:05 -0700, Craig White wrote: > 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... ---- not only wrong thread but as Paul so correctly points out. dd - NOT bb I am rapidly ingesting coffee but haven't figured out a mainline method so I am left to normal ingestion methods which apparently haven't quite caught up to my fingers or my brain. duh. Sorry Craig
