Sent: Friday, April 09, 2021 at 9:46 AM
From: "José Abílio Matos" <jaomatos(a)gmail.com>
To: users(a)lists.fedoraproject.org
Subject: Re: M2 on laptop
On Friday, April 9, 2021 1:11:01 AM WEST Greg Woods wrote:
> 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
This is +1 message. :-)
Yesterday I had precisely the same issue and the solution that Greg stated was
the solution. This was a Dell XPS 15.
In this case the windows version was erased so there was no need for the
workaround. Looking in the BIOS, in the storage section, was enough to see
that the chosen configuration was RAID, changing it to AHCI allowed the
installer to see the disk and to proceed with the installation.
Regards,
--
José Matos
Finally can I expect to install a dual-boot by keeping the installed windows running after
shrinking the
original partition if I need?
These 2 comments do not seem to match together.