W. Martin Borgert a écrit : > > I try to install Jessie with a soft RAID6 of four disks, 1 TB each. > The idea is to use the complete disk for RAID and then only on top > separate swap and root. > > The installation worked fine on one machine, but for some reason, > grub does not install on the fourth disk. It turns out, that the > fourth disk is GPT, while the others are DOS (= MBR, right?). Also, > the fourth disks only partition is of type "Linux RAID", while the > partitions of the other three disks are "Linux raid autodetect".
On a GPT disk, grub-install requires a small "BIOS boot" partition (less than 100 kB is enough) or --force to use block lists. > AFAIK, I don't need GPT for such small disks, right? GPT is not required for 1 TB but has other advantages. > Is there an easy and safe way to change the disk from GPT to DOS/MBR? Maybe gdisk can do that.
