I have an Asus EeeBook X205TA which proves very difficult to install Linux on due to obscure new hardware and 32-bit EFI on 64-bit hardware. I have seen and read a lot of material and I am almost finished. The problem I have now is as follows:
When I boot the system I always get the
grub> prompt where I can enter what is written in
/boot/grub/grub.conf which will work:
insmod gzio insmod part_gpt insmod btrfs linux (hd0,gpt5)/@/boot/vmlinuz-3.19.0-18-generic.efi.signed root=LABEL=UNIXROOT rootflags=subvol=@ initrd (hd0,gpt5)/@/boot/initrd.img-3.19.0-18-generic
How do I fix the problem that grub (2.02~beta2) apparently does not find
/boot in the subvol
@ of the btrfs partition
LABEL=UNIXROOT? I have played with
efiboot, which has 2 relevant entries now,
Linux, one of which gets me to
grub>, the other to
grub rescue>. How can I get information from grub2 why it fails?
grub-update does not change a thing.
The problem is that I do not know how booting works with EFI ->?-> GRUB ->?-> FS->/boot/grub/grub.cfg, so all my efforts are blind.
What do you need to know? Ubutu 15.04 64-bit, 32-bit UEFI, 32GB eMMC, Z3735 baytrail CPU, Win 8.1 still alive, Secure Boot disabled, Legacy Boot not a BIOS option, what else?