On Thu, Apr 8, 2021 at 11:46 AM Patrick Dupre <pdupre(a)gmx.com> wrote:
Hello,
I wanted to install fedora 33 on a laptop with a M2 SSD 128.Go, but it is
not
recognized by fdisk (fedora live WK).
Dell likes to configure the SSD as a RAID in the BIOS. Even though their
Windows installation is not using it as a RAID device. When it is set to
RAID in the BIOS, Linux cannot see it. For Linux to run, it must be set to
AHCI mode. In my relatively new Dell workstation, this is under System
Configuration -> SATA Operations.
It "should" be safe (all I can say is that it was for me) to go in and
verify that your SATA mode is set RAID (in which case this is likely the
cause of your problem), set it to AHCI, and then boot your Linux USB stick.
It should then see the SSD.
Unfortunately, Windows will now not boot unless you change it back to RAID.
If you were planning to keep the installed Windows system (which I wanted
to do), then there is a procedure you can Google for (it might have even
been referred to on this list) that will allow the Dell-installed Windows
to boot in non-RAID mode. I followed the directions and can now dual boot
Windows and Linux out of the GRUB menu.
--Greg