I have not come across a pc which does not allow you to boot a secondary drive before... Please can you read the manual and triple check this ? The only possible reason I can think this would happen Is that you're using an add on board and you would configure this from a secondary bios. My Dell, Asus, and all other motherboards I've had over the past 10 years all allow a second device. Cheers Simon On 20 May 2011, at 08:15, Paul van der Vlis <paul@xxxxxxxxxxxxx> wrote: > Op 20-05-11 09:03, Simon Mcnair schreef: >> Please can you further define what you mean by 'it can become a >> problem to boot' ? >> Generally this is resolved by having a mbr and boot partition on each >> of your mirrored drives so that whichever you use to boot has the >> pertinent information to boot the kernel and construct the raid array. >> If you have raid 5 with 3 disks you'd have a 3 drive mirror partition >> on each disk and a raid 5 set across all three too. > > In the bios from my machines (Supermicro, Dell) I can select only one > drive to boot. Wenn the drive fails, no other disk is tried. > > I can go into the bios and change the drive when it fails, or I can > exchange the disks. But I would like it, when the machine would simple > boot even when the first disk is corrupt. > > With regards, > Paul van der Vlis. > > >> I'm not a guru on this and can't provide much knowledge past the >> theory and high level ;-) >> Simon >> >> On 20 May 2011, at 07:55, Paul van der Vlis <paul@xxxxxxxxxxxxx> wrote: >> >>> Hello, >>> >>> I use software raid (mdadm). The main problem for me is that when the >>> drive with the MBR fails, it can become a problem to boot. >>> >>> When the bios would use another drive to boot when the first drive >>> failes, this problem would be gone. But I don't know rackservers who do >>> that. Do you? >>> >>> Or is there maybe some kind of fake-raid card what uses mdadm to solve >>> this problem? >>> >>> Another way would be to use e.g. an USB device to boot to solve this >>> problem. Any experiences with that? >>> >>> (hmm, I realize that netboot is an option too). >>> >>> With regards, >>> Paul van der Vlis. >>> >>> >>> -- >>> http://www.vandervlis.nl >>> >>> -- >>> To unsubscribe from this list: send the line "unsubscribe linux-raid" in >>> the body of a message to majordomo@xxxxxxxxxxxxxxx >>> More majordomo info at http://vger.kernel.org/majordomo-info.html >> -- >> To unsubscribe from this list: send the line "unsubscribe linux-raid" in >> the body of a message to majordomo@xxxxxxxxxxxxxxx >> More majordomo info at http://vger.kernel.org/majordomo-info.html >> > > > -- > To unsubscribe from this list: send the line "unsubscribe linux-raid" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
