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Old 10-17-2020, 02:32 PM   #1
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Question Can't see drives on Dell XPS 8940 with fdisk or gdisk to partition them for Slackware

Hello, I'm trying to install Slackware on a new Dell XPS 8940 desktop. Created a boot image usb stick, logged in as root. But my internal hard drives are not visible to fdisk, gdisk, or lsblk. Only the usb stick drive appears as /dev/sda. Trying fdisk /dev/sdb, etc results in a drive not found error.

The Optical drive isn't visible either. However the disks & optical drive are fine in Windows 10.

Bios info:

Bios version 1.0.1 Build 4400.12 UEFI Rom

Drive info:

SATA-0 HDD 6001 GB WD-WX12040N1SV9
SATA-1 HDD 6001 GB WD-WX12D4073KNY
M.2 PCIe SSD 512 GB CD05N905213805V1L

Other Bios settings:

SATA Operation setting -- RAID on

Secure Boot setting -- not enabled

Fastboot setting -- minimal
Old 10-17-2020, 06:46 PM   #2
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What is the output of

fdisk -l
Old 10-17-2020, 09:03 PM   #3
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What version of Slackware are you using?

^ fdisk doesn't work too well on new hardware. Try gdisk instead.
Old 10-17-2020, 09:13 PM   #4
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parted -l
Old Today, 03:49 AM   #5
Registered: Jun 2017
Location: Northwest Russia
Distribution: Slackware 14.2
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>SATA Operation setting -- RAID on

Do you really want to use RAID mode? Does it work without of it (i.e. plain AHCI)?

What is output of
$ lsblk
$ dmgesg | grep ahci


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