Re: grub efi does not find windows

[Tom H <tomh0665@gmail.com>]

On Tue, Jan 28, 2014 at 5:47 AM,  <berenger.morel@neutralite.org> wrote:
> Le 28.01.2014 11:41, berenger.morel@neutralite.org a écrit :
>
> Sorry for incomplete message. Here is the full message:
>
> At my job, I have a computer on which I can choose the OS so, I installed my
> lovely debian there (with "some" problems to make it booting because of this
> damned EFI ) but would prefer to keep windows in dual boot. Windows
> partition is still there, but grub does not seems to be able to notice it.
> I can do all tasks on the Debian system, but I need to retrieve some
> informations which were configured on windows, and keeping a dual boot seems
> a not so bad idea anyway, so do someone have any idea about what to do to
> fix that problem?
>
> Now some technical informations which could give (or not) some hints to help
> me:
> The boot flag was on a NTFS partition sda1, 1GiB large.
> Windows itself was on a NTFS partition sda2, more than 300GiB large, but I
> have resized it through Debian installer to 93GiB ( should be enough for a
> system which will almost never be used, even if the system's name is windows
> btw ). After simple resizing, it was still able to work.
> There were 2 other partitions, one for windows recovery with NTFS, and
> another one for HP tools with fat32. I have removed both of them.
> I now have a fat32 partition with EFI informations, mount point: /boot/efi,
> 1.86GiB large on sda3, which is bootable.
> I have lot of other partitions for Debian: /, /usr, /var, swap, /tmp and
> /home. Lot of GiB there.
> The last partition is a FAT32 that I intend to keep to share data between
> windows and debian, on sd5, 61GiB large ( very large too, but considering
> the HD's size... I did not cared a lot about that ).

Have you checked that "/boot/efi/EFI/Microsoft\Boot\bootmgfw.efi"
exists? (It might be "Bootmgfw.efi".)

Have you tried to switch to "bootmgfw.efi" through your firmware?

Running "efibootmgr" should display all the values that your firmware
knows about and the order in which they classified.