At the very begining, i want to install dual booting,but failed. then...
when booting it appears :
error:invalid arch independent elf magic
apparently,i don't have any idea of it .
then i try some methods found online
type followings behind rescue:
then appears invalid arch independent elf magic
appeared bad filenames
ls (hd0,*) [*stands for 1,3,4,5,]
appeared unknown filesystem
3) then i try
start ubuntu using usb system
mount /dev/sda1 /mnt/
grub-install --root-directory=/mnt /dev/sda
/usr/sbin/grub-setup: warn: This GPT partition label has no BIOS Boot Partition; embedding won't be possible!.
/usr/sbin/grub-setup: warn: Embedding is not possible. GRUB can only be installed in this setup by using blocklists. However, blocklists are UNRELIABLE and their use is discouraged..
/usr/sbin/grub-setup: error: will not proceed with blocklists.
certainly i don't understand it
go on trying
mount /dev/sda /mnt
mount --bind /dev /mnt/dev
sudo chroot /mnt
apeared:chroot: failed to run command `/bin/bash': No such file or directory
finally, i really almost die.