I have a customized Sony Vaio S with default Windows 7 64-bit and manually installed Ubuntu 12.04 64-bit installed on it.
I use Grub as boot manager and initially it worked, booting both Windows 7 and Ubuntu.
After some updates on Ubuntu it broke Grub and I reinstalled it.
Now it won't let me boot into Win7, apparently there are some issues with EFI.
blkid gives me the following:
/dev/sda1: LABEL="SONYSYS" UUID="72D1-8783" TYPE="vfat" /dev/sda2: LABEL="Recovery" UUID="6E62E06762E0360D" TYPE="ntfs" /dev/sda3: LABEL="boot" UUID="5CF7-3AEE" TYPE="vfat" /dev/sda5: LABEL="Win7" UUID="BEDC4BEFDC4BA10F" TYPE="ntfs" /dev/sda6: UUID="aaff8b62-cffe-4e3c-a539-f57e36f293f8" TYPE="ext4" /dev/sda7: UUID="a26bdd92-07e5-41ed-b7cf-79dfcb89560c" TYPE="ext4" /dev/sda10: UUID="20565c91-c106-4761-914c-b1c33ed07d1f" TYPE="ext4" /dev/mapper/cryptswap1: UUID="f29a5cfc-c098-4308-bada-a519c404d0d4" TYPE="swap"
sda6 are my root and home directory, respectively.
Boot-Repair gives the following output: http://paste.ubuntu.com/1665681
The first Win7 enty in GRUB from 30_os-prober Windows Recovery Environment (loader) (on /dev/sda5) (fixed by Boot-Repair) gives the following error:
error: unknown command 'drivemap'. error: invalid EFI file path.
The other ones from 40_Custom Windows 7/Windows 7 Alter/etc.:
Black screen and a white rectangle. After a few seconds returning to GRUB.
I tried using rEFInd to boot into Win7, without success. When i click on the Win7 button, it returns to GRUB.
Are there any solutions apart from reinstalling Win7?
Sorry for the messy grubfiles, I tried several ways to boot Win7.