On Wed, Sep 20, 2017 at 04:32:06PM +0200, Pierre Couderc wrote: >On 09/20/2017 03:06 PM, Steve McIntyre wrote: >> >> What does fdisk show on sdb for you? >Normal results : >root@nous:/# fdisk -l /dev/sdb >Disk /dev/sdb: 1.8 TiB, 2000398934016 bytes, 3907029168 sectors >Units: sectors of 1 * 512 = 512 bytes >Sector size (logical/physical): 512 bytes / 512 bytes >I/O size (minimum/optimal): 512 bytes / 512 bytes >Disklabel type: dos >Disk identifier: 0x9c9fb5db > >Device Boot Start End Sectors Size Id Type >/dev/sdb1 * 2048 1953791 1951744 953M ef EFI (FAT-12/16/32) >/dev/sdb2 1953792 3907028991 3905075200 1.8T 83 Linux > >and.... on sda the same results you get on your sdc !!
OK, that's good. ... >> Right. Either you're not booted in EFI mode, or /sys is not >> mounted. Grub is assuming you're on a normal BIOS-boot machine. Make >> sure that you have /sys mounted, and /dev/sdb1 mounted on /boot/efi, >> then run >> >> # grub-install --target x86_64-efi >> >> and see what it does. >> >root@nous:/# mount /dev/sdb1 /boot/efi >root@nous:/# mount /dev/sdb1 /boot/efi >mount: /dev/sdb1 is already mounted or /boot/efi busy > /dev/sdb1 is already mounted on /boot/efi >root@nous:/# grub-install --target x86_64-efi >grub-install: error: /usr/lib/grub/x86_64-efi/modinfo.sh doesn't exist. >Please specify --target or --directory. >root@nous:/# ls /usr/lib/grub >grub-mkconfig_lib i386-pc > >I thank you very much of your help - and I am honoured - but I could follow >some hoto if find one, but I do not find one. >It is surprising, I suppose am not the first to try make a btrfs raid1... Actually, that's not your problem. My best guess is that you've done an installation booted in BIOS mode, not UEFI mode. That's why you've got grub-pc installed rather than grub-efi-amd64. Do you actually care about booting via UEFI, or are you just looking for a bootable system? If the latter, simply reformat your ESP (/dev/sdb1) to be a normal ext2 or ext3 partition and use that as /boot. You could even do a RAID /boot using sdb1 and sdc1 together... -- Steve McIntyre, Cambridge, UK. st...@einval.com "The problem with defending the purity of the English language is that English is about as pure as a cribhouse whore. We don't just borrow words; on occasion, English has pursued other languages down alleyways to beat them unconscious and rifle their pockets for new vocabulary." -- James D. Nicoll