Hi,
I plan to switch completely from Windows 11 to Debian on my laptop, but
as a first step I'd like to configure double-boot setup to give it a
try, look around and check if all hardware works fine under Debian.
Current state:
Dell laptop (one NVMe disk only) with Windows 11 onboard.
Windows starts in UEFI mode (Secure Boot ON).
Already resized main partition to make space for Debian.
So currently there are the following partitions on disk:
100MB, FAT32, GPT (EFI System Partition)
16MB, Other, GPT (Reserved Partition)
300GB, NTFS, GPT (Data Partition) (Main C: disk visible under Win11)
168GB, free space, ready to have ~150GB for Debian and 16GB for swap
880MB, NTFS, GPT (Recovery Partition)
First try:
UEFI Boot (Secure Boot ON), Debian Trixie, Expert mode installation
During installation Debian does NOT see my disk at all (pendrive with
Debian Trixie is visible only)
Also during installation Debian says that "it seems there is another
system installed in Legacy Mode, am I sure to force UEFI mode?" which
is not correct - Win11 is installed in UEFI mode (when I try to boot it
in Legacy Mode I get Windows Blue Screen Of Death)
Second try:
Secure Boot set to OFF.
Nothing changed during Trixie installation, so no device to install on.
Third try:
Boot in Legacy Mode (so Secure Boot is OFF).
Debian Trixie can see my laptop disk properly, so installation is
successful, but...
It cannot see my Windows 11 installation when trying to
install/configure/prepare GRUB.
At this step I decided to NOT install GRUB on my main disk to NOT loose
access to my Windows 11 system.
(but Trixie says that it's possible to restore access by manual
configuration of GRUB later on - I'm not sure...)
Main goal:
To have both current Windows 11 and new Debian Trixie available in GRUB
and properly bootable.
How to achieve this? :-)
Thank you,
Best Regards,
Rafal
