On Tue, Oct 8, 2013 at 11:11 AM, Francesco Pietra <chiendar...@gmail.com> wrote: > > I hope not to bother beyond the limit, but the security of mirror raid is > something of utmost importance, at least in my work of biochemist, with very > limited ability in recovering from disk failures. > > I planned to use the double-opteron, two sockets, server, tya 64, as a > victim for the test you suggested. However, the test > > root@tya64:/home/francesco# dd bs=512 count=1 if=/dev/sda 2>/dev/null | > strings > ZRr= > `|f > \|f1 > GRUB > Geom > Hard Disk > Read > Error > > root@tya64:/home/francesco# dd bs=512 count=1 if=/dev/sdb 2>/dev/null | > strings > ZRr= > `|f > \|f1 > GRUB > Geom > Hard Disk > Read > Error > > suggested that grub was installed on both disks. Using one disk at a time, > as you suggested, was in accordance. > > Then I carried out the pipe test with the recent machine, gig64: > > root@gig64:/home/francesco# dd bs=512 count=1 if=/dev/sda 2>/dev/null | > strings > ZRr= > `|f > \|f1 > GRUB > Geom > Hard Disk > Read > Error > > root@gig64:/home/francesco# dd bs=512 count=1 if=/dev/sdb 2>/dev/null | > strings > root@gig64:/home/francesco# > > indicating that grub is installed on sda only. Confirmed by using one disk > at a time.
Is this post-install? If it is, this is normal given that Debian's d-i only installs grub on one disk; although (from memory) the dialog has changed. There's an option to enter the disk manually (which I haven't tried) and you can perhaps enter two disks there. (This is in "expert" mode.) Or is this post-"grub-install /dev/sdb" after booting into the new system? PS: You might want to check out bootinfoscript. It scans your disks and outputs partition tablesm grub installations, etc. -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/CAOdo=Sz9ppn59WDnC6RcyJd8vs1=mkum3eqrh0xpiej94rh...@mail.gmail.com
