Accidentally I failed to install AMD Catalyst 13.6 beta on my Debian 7.1 x64, and I lost my GNOME. For short, I can't recover my GNOME and I reinstall my Debian 7.1 without EFI mood (my mistake). The Installer can not detect EFI and the only option to install bootstrap loader is MBR.
I can not start both my Debian and Windows. From Bios, I start boot via EFI DVD to start Debian CD Installer. I choose Advanced Option to fix bootstrap location from MBR to EFI Partition (System Reserved), and follow these step:
- Update your Debian and run
# apt-get install grub-efi-amd64
This command will remove grub package, and choose yes - Configure your GRUB using this command
# modprobe dm-mod
# grub-install - Apply your new grub into EFI Partition
# update-grub - This procedure only fix boot into Debian. To create boot option to load Windows 8 boot manager you need UUID for EFI partition by running
# blkid
write down UUID for EFI Partition (it may be label as "System Reserved") with size about 100M-130M.
for my case UUID is 4842-E4F1 - edit file /etc/grub.d/40_custom and at the end of file add
menuentry "Microsoft Windows 8" {
insmod part_gpt
insmod fat
insmod search_fs_uuid
insmod chain
search --fs-uuid --no-floppy --set=root 4842-E4F1
chainloader (${root})/EFI/Microsoft/Boot/bootmgfw.efi
}
the file becomes like this:
#!/bin/sh
exec tail -n +3 $0
# This file provides an easy way to add custom menu entries. Simply type the
# menu entries you want to add after this comment. Be careful not to change
# the 'exec tail' line above.
menuentry "Microsoft Windows 8" {
insmod part_gpt
insmod fat
insmod search_fs_uuid
insmod chain
search --fs-uuid --no-floppy --set=root 4842-E4F1
chainloader (${root})/EFI/Microsoft/Boot/bootmgfw.efi
} - reinstall and reconfigure your grub by issuing :
# grub-install
# update-grub
Done, now I have GRUB to my Debian and option to load Windows 8 Boot Manager
