Re: Dell CMOS Setup -> System Configuration -> SATA Operation -> RAID On vs AHCI
On Fri, Dec 23, 2022 at 10:29 PM David Christensen
<dpchrist@holgerdanske.com> wrote:
>
> debian-user:
>
> I have a SanDisk Ultra Fit USB 3.0 16 GB flash drive with Debian
> installed on it EUFI, GPT, and Secure Boot. I use it for maintenance/
> trouble-shooting on newer computers.
>
>
> When I boot the flash drive in a Dell Precision 3630 Tower that has
> Windows 11 Pro installed on the internal NVMe drive, the internal PCIe
> NVMe drive is not visible to Linux:
>
> 2022-12-23 19:16:13 root@bullseye ~
> # cat /etc/debian_version ; uname -a
> 11.5
> Linux bullseye 5.10.0-19-amd64 #1 SMP Debian 5.10.149-2 (2022-10-21)
> x86_64 GNU/Linux
>
> 2022-12-23 19:17:48 root@bullseye ~
> # lsblk
> NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
> sda 8:0 1 14.9G 0 disk
> |-sda1 8:1 1 953M 0 part /boot/efi
> |-sda2 8:2 1 954M 0 part /boot
> |-sda3 8:3 1 954M 0 part
> | `-sda3_crypt 254:1 0 954M 0 crypt [SWAP]
> `-sda4 8:4 1 11.2G 0 part
> `-sda4_crypt 254:0 0 11.2G 0 crypt /
> sr0 11:0 1 1024M 0 rom
>
> 2022-12-23 19:19:24 root@bullseye ~
> # l /dev/n*
> /dev/null /dev/nvram
>
> /dev/net:
> ./ ../ tun
>
>
> STFW I see that the 'nvme' kernel module must be loaded. Doing so does
> not resolve the issue:
>
> 2022-12-23 19:17:51 root@bullseye ~
> # modprobe nvme
>
> 2022-12-23 19:19:17 root@bullseye ~
> # lsmod | grep nvme
> nvme 49152 0
> nvme_core 131072 1 nvme
> t10_pi 16384 2 sd_mod,nvme_core
>
> 2022-12-23 19:19:21 root@bullseye ~
> # lsblk
> NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
> sda 8:0 1 14.9G 0 disk
> |-sda1 8:1 1 953M 0 part /boot/efi
> |-sda2 8:2 1 954M 0 part /boot
> |-sda3 8:3 1 954M 0 part
> | `-sda3_crypt 254:1 0 954M 0 crypt [SWAP]
> `-sda4 8:4 1 11.2G 0 part
> `-sda4_crypt 254:0 0 11.2G 0 crypt /
> sr0 11:0 1 1024M 0 rom
>
> 2022-12-23 18:46:19 root@laalaa ~/laalaa.tracy.holgerdanske.com
> # l /dev/n*
> /dev/null /dev/nvram
>
> /dev/net:
> ./ ../ tun
>
>
> The work-around is to change CMOS Setup -> System Configuration -> SATA
> Operation from "RAID On: to "AHCI". The problem is that Windows needs
> the former and it is a hassle to change the CMOS settings back and forth
> every time I want to run Debian. If I change it to AHCI and forget to
> change it back, Windows breaks. If and when I make this mistake on a
> client computer, it will be very embarrassing. I want a portable Debian
> on a USB flash drive or USB SSD to work on newer computers without
> changing the CMOS settings that the factory set for Windows.
>
> Comments or suggestions?
The NVMe is provisioned to the Intel Optane accelerator. Optane takes
a small but fast NVMe, and combines it with a slow HDD, and makes the
system (kind of) perform like there's one large SSD.
The NVMe drive should not appear as a seperate drive when it is
provisioned for Optane.
I'm running Kubuntu on a Dell XPS 8930 that came preinstalled with
Windoze. It also had the Optane acceleration. I had to disable Optane
to get access to the NVMe. Once Optane was broken I was able to load
the OS on the NVMe, and make the HDD a large storage/scratch drive.
Jeff
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