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Re: major booting issues for a totally blind user trying to boot debian 12.6 and windows 10 pro 64 bits on different drives with uefi booting

Hi, Here is the parted print command for /dev/nvme0n1 the linux drive
Model: Samsung SSD 970 EVO Plus 2TB (nvme)
Disk /dev/nvme0n1: 2000GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags:

Number  Start   End     Size    File system  Name  Flags
 1      1049kB  538MB   537MB   fat32              boot, esp
 2      538MB   1050MB  512MB   ext2
 3      1050MB  2000GB  1999GB

Model: Samsung SSD 970 EVO Plus 2TB (nvme)
Disk /dev/nvme1n1: 2000GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags:
Number Start End Size File system Name Flags 1 1049kB 17.8MB 16.8MB ext4 Microsoft reserved partition msftres 2 17.8MB 1999GB 1999GB ntfs Nick Gawronski's system 76 1 msftdata 3 1999GB 2000GB 724MB ntfs hidden, diag 4 2000GB 2000GB 557MB ntfs Unnamed hidden, diag It looks like somehow the esp partition got it's type changed to the ext4 partition type but the question is how can I change it back to the normal type for that partition whatever it is? Nick Gawronski On Fri, 25 Oct 2024, Pascal Hambourg wrote: 


Date: Fri, 25 Oct 2024 08:53:17 +0200
From: Pascal Hambourg <pascal@plouf.fr.eu.org>
To: Nick Gawronski <nick@nickgawronski.com>, debian-boot@lists.debian.org
Subject: Re: major booting issues for a totally blind user trying to boot
    debian 12.6 and windows 10 pro 64 bits on different drives with uefi
    booting

On 25/10/2024 at 00:21, Nick Gawronski wrote:
Hi, I did more checking and found that this system does not support master boot record booting as the two drives are two terabytes and from what I have read that size does not support the master boot record option.
DOS/MBR partition table format supports up to 2 TiB (2.2TB) on drives with 512-byte logical sectors (and 16TiB on native "Advanced Format" drives with 4096-byte logical sectors). So it supports 2TB drives.
Also, the partition table format (DOS/MBR or GPT) must not be confused with the boot mode (legacy/BIOS or EFI). It is Windows which only supports legacy/BIOS boot on DOS/MBR or EFI boot on GPT. GRUB and Linux do not have such limitation.
The windows drive does not have an efi partition but the first drive with debian does.
Can you post the partition tables of both drives shown by fdisk -l or parted -l ?
Was the first drive present and did it already have a EFI partition when Windows was installed on the second drive ?
I am now trying to find an accessible way to create a windows bootable usb stick which so far I have not been able to do yet as etcher acts like it is not for this purpose and woeusb is not packaged in debian as pipx install wants the gtk development libraries which were not installed with build-essential.
All I know is that Windows ISO images are not "hybrid" and cannot just be written "as is" on a USB stick. Microsoft provides a tool to create a bootable USB stick from a Windows ISO image but it runs only on Windows.
I had someone look and no windows boot manager exists in the f7 boot menu but it just takes me back to the top of the list of boot drives
Is the Windows drive present in the list of boot drives ? If yes, what happens when you select it ?
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