On Sat, 2006-06-10 at 13:03 -0500, Johnny Hughes wrote: > On Sat, 2006-06-10 at 19:31 +0200, Kai Schaetzl wrote: > > Les Mikesell wrote on Fri, 09 Jun 2006 14:00:54 -0500: > > > > > If you followed the HOWTO you may have accounted for the different drive > > > in the grub setup. > > > > I don't know what you mean. I followed the howto and everything works. The > > point is: in my opinion it should *not* work. No matter which drive I > > remove it always boots successfully from the default 0 label, although that > > is on hd0 which is gone if I remove that drive. Theoretically, it should > > fail to boot from hd0 and fallback to hd1. This is IDE, not SCSI. > > > > (I can also boot fine from hd1 if I interrupt the automatic boot, so grub > > is setup correctly.) > > > > Kai > > > > Kai, > > One thing that I think you may be missing is this ... > > In grub ... hd0 is the first found hard drive ... hd1 is the second > found hard drive, etc. > > IF ... you remove the primary hard drive (ie power it off, and unplug > the cable) ... then the drive that is left (that used to be hd1) is now > hd0 > > So ... when booting, it will be seen as hd0 and you won't have an hd1. > > Well ... at least that is what I have experienced in the past ... maybe > someone else who is smarter than me would care to comment / verify this > behavior. Further, in spite of my recent embarrassing confusion, *if* BIOS is still involved (with RAID I don't know) and if you have "fail-over" enabled in the BIOS (try C:, if that fails, D:,..., floppy, CD,... etc.), the BIOS should change the device ID so that what was 0x81 becomes 0x80 (D: becomes C:). Although that is in "Winspeak", the benefits to Linux accrue. This presumes no earth-shattering changes in basic BIOS operations in the last 6/7 years. We had EBDA then and Extended System Configuration, so hopefully things are still similar. > > Thanks, > Johnny Hughes > _______________________________________________ > CentOS mailing list > CentOS@xxxxxxxxxx > http://lists.centos.org/mailman/listinfo/centos -- Bill
Attachment:
signature.asc
Description: This is a digitally signed message part
_______________________________________________ CentOS mailing list CentOS@xxxxxxxxxx http://lists.centos.org/mailman/listinfo/centos
