Windows 7 won't boot after I installed GRUB

Question

Hello,
I just installed Arch Linux on my laptop with Windows 7. I followed the Beginners Guide. However, when I did "grub-install --target=i386-pc --recheck /dev/sda" it said something along the lines of:
warning, no BIOS boot partition, embedding is not possible
warning, embedding is not possible, need to use blocklists
error, will not proceed with blocklists.
Now, I think this was my mistake. I decided to use the --force option. Now grub works, and boots to linux, but when I try to boot to windows, windows says Windows failed to boot.
Please help, and if I have missed any information then just ask me.
Grub version is 2.02 beta 2-4.
Grub is booting Windows, but Windows displays this:
Windows failed to start. A recent hardware or software change might be the cause.
Thanks a lot!
Last edited by 097 (2014-07-10 22:20:23)

Answer 1

Actually, there already is an entry for Windows 7. It just doesn't work. Here it is:
### BEGIN /etc/grub.d/30_os-prober ###
menuentry 'Windows 7 (loader) (on /dev/sda1)' --class windows --class os $menuentry_id_option 'osprober-chain-AC66E08666E0529E' {
        insmod part_gpt
        insmod ntfs
        set root='hd0,gpt1'
        if [ x$feature_platform_search_hint = xy ]; then
          search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt1 --hint-efi=hd0,gpt1 --hint-baremetal=ahci0,gpt1  AC66E08666E0529E
        else
          search --no-floppy --fs-uuid --set=root AC66E08666E0529E
        fi
        chainloader +1
### END /etc/grub.d/30_os-prober ###
Also, when I ran gdisk, it says this: Found valid GPT with protective MBR; using GPT.
Can I just ignore that?
Thank you for your help!