#824648 win32-loader: cannot start the Debian installer on a GPT partition

Package:
win32-loader
Source:
win32-loader
Submitter:
Francisco Gómez García
Date:
2022-04-11 11:39:02 UTC
Severity:
important
#824648#5
Date:
2016-05-18 12:08:20 UTC
From:
To:
After copying Debian's kernel and initrd at the system's C: partition
and rebooting to the installer, the system shows up an error 0xc000007b
related to the file g2ldr.mbr. This is probably due to a lack of support
for GPT disks.

win32-loader has been tested on a x64 computer with UEFI and Windows
8.1. There are no errors on a Windows 10 VirtualBox machine with BIOS
and a MBR table.
#824648#10
Date:
2017-06-13 14:00:25 UTC
From:
To:
reproduced on my brand-new UEFI machine with a GPT SSD and a GPT HDD running
Windows 10
#824648#15
Date:
2017-07-18 08:40:30 UTC
From:
To:
I tried to install Debian (9.0) on a Tablet with Windows 10 Home.
* SSD-Harddrive with GPT
* 2 GB RAM
* 64 bit CPU
* UEFI-BIOS

After restart I got the error 0xc000007b and error message for g2ldr.mbr

As it turned out, the UEFI (and Windows) was only 32 bit(!)
Eventuelly I managed to create a bootable USB key. It needed a EFI/BOOT/bootia32.efi file to work.

The problem might be related to the 32 bit system instead of 64 bit.


(this report was written in a virtual machine)
#824648#20
Date:
2017-07-18 14:25:30 UTC
From:
To:
Yes Windows requires UEFI to match in bit level.

At least in Debian 8, I believe the only media to support 32bit UEFI
was the i386/amd64 multiarch net install image.  I know I have used that
one successfully on an intel system with 32bit UEFI.

I didn't check if Debian 9 has similar limits on 32bit UEFI support in
the installer.  It is a pretty rare system type to encounter fortunately.
#824648#25
Date:
2022-04-11 11:10:32 UTC
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