I have found placing /boot + MBR on a DOM (Disk on module) to be very effective. Perhaps we should be asking how the MBR got broken in the first place? On Fri, Aug 29, 2014 at 2:47 PM, Paul van der Vlis <paul@xxxxxxxxxxxxx> wrote: > Hi Roberto, > > op 29-08-14 22:44, Roberto Spadim schreef: >> i use two or more boot disks, if the first raid1 disk don't boot bios >> go to second boot disk, third, etc etc, > > In my opinion this only works when the boot-disk is completely defect or > removed. Not when the data in the MBR on that boot-disk is corrupt. > > Or did you test this, or do you have other reasons to believe that your > bios will handle this correct? > > With the boot-disk I mean the disk what's in the bios the first disk. So > this could also be the second raid1 disk. Or an USB stick. > >> you must write grub to mbr of each disk > > Of course. > > With regards, > Paul van der Vlis. > >> i'm using dell server r410 if i'm not wrong >> >> 2014-08-29 17:31 GMT-03:00 Paul van der Vlis <paul@xxxxxxxxxxxxx>: >>> Hello, >>> >>> I like mdadm and I am using it many years. But in my opinion it has one >>> disadvantage: when the MBR of the boot-disk is corrupt, the machine will >>> not boot. >>> >>> A bios could check this. Wait for some kind of signal from Grub or >>> Linux, and after a timeout boot from another disk. But I don't know >>> about a bios with that feature. >>> >>> A PCIe card could do something like that, but I don't know about such a >>> PCIe card. >>> >>> Is there such hardware? >>> What do you do to avoid this problem? >>> >>> With regards, >>> Paul van der Vlis. >>> >>> >>> >>> >>> -- >>> Paul van der Vlis Linux systeembeheer, Groningen >>> 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 >> >> >> > > > > > > -- > Paul van der Vlis Linux systeembeheer, Groningen > 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
