So I had to reinstall my Windows 8 in my dual boot system with Arch Linux. After the reinstall I had the default boot manager of Windows back in place of GRUB2.
My way to fix it, was to install on my USB key the current live CD of archlinux Download here. Burn it to CD or copy it to your USB key with
dd bs=4M if=/path/to/archlinux.iso of=/dev/sdx
After the installing of the live CD to my USB key. I was restarting my PC to boot from it. Afterwards I got the default arch Linux shell.
- I was creating a root point for my root disk in /mnt/root/
- Now I can mount the root partition to this point
mount /dev/sdXX /mnt/root
- Now I had to change the root. This command also adds the necessary folders like (proc, dev,…)
- I have a separate boot partition so I had to mount this also to my chroot system
- Regenerate the grub.cfg
grub-mkconfig -o /boot/grub/grub.cfg
- So, it’s nearly done! I had only to install Grub back in the MBR
Last not but least. Rebooted and it was working