Questions[ahci](ubuntu)

I tried to install Ubuntu 20.04 in my Dell G5 which has 2 drives. One with Windows 10 on it (256 GB) and another one with 1 TB capacity.

I shrunk the volume of 1 TB by 150 GB and tried to install there.

But Ubuntu installer didn't allow me as I got a dialog after the Keyboard setting said "Turn Off RST" with the message

This computer uses Intel RST (Rapid Storage Technology). You need to turn off RST before installing Ubuntu. For instructions, open this page: help.ubuntu.com/rst

If I make any changes in the BIOS setting, like changing the Intel controller from RAID to AHCI, Windows won't boot and goes into System Recovery.

I didn't have this issue when installing 18.04. While creating the partitions, you need to create a EFI partition with 200 - 500 MB with the usual steps and the installation will be completed succesfully.

On restarting, you will not be getting the GRUB but instead Ubuntu will boot by default. If you need to boot Windows, you will have to go to the BIOS and choose from the UEFI boot option each time.

Once 18.04 installation is complete, you can upgrade it to 20.04.

After upgrading I installed the KDE desktop and at the login screen I chose the "Ubuntu on Wayland" option.

After doing these 2 things, I lost the new features of 20.04 like the Ubuntu boot screen with Dell logo and the power off/log out blur effect screen. Not sure how to get that back.

I have a Dell XPS 15 laptop and I had my motherboard replaced. After that I am no longer able to dual-boot Windows and Ubuntu. Of course I disabled Secure boot in BIOS. The problem is:

• if I set SATA mode to RAID on, the GRUB bootloader loads correctly, but if I select Ubuntu (no matter which kernel or if it's recovery mode or not), I get the error:

Gave up waiting for root device. Common problems:
 - Boot args (cat /proc/cmdline)
 - Check rootdelay= (did the system wait long enough?)
 - Missing modules (cat /proc/modules; ls /dev)
ALERT! /dev/disk/by-uuid/920903aa-762f-40d2-8126-87f4b0e6f975 does not exist. Dropping to a shell!

• if I try AHCI mode, I'm not even able to access GRUB boot menu, as I get Dell system check screen right away and after that it starts recovery process.

I'd really appreciate any help on this.

I'm attempting to install Ubuntu 19.04 on a 2019 Dell Inspiron 7490 (service manual). When I get to the point of selecting a partition to install on, the installer can't find any hard drive and I just see an empty list like this:

.

I found this information from Dell about the issue: https://www.dell.com/support/article/us/en/19/sln299303/loading-ubuntu-on-systems-using-pcie-m2-drives?lang=en

Although its a bit outdated. They suggest to first set the SATA operation to AHCI in BIOS. In my BIOS I don't get an option for AHCI as seen below:

Only disabled or RAID. To my understanding, AHCI is a type of RAID so maybe this is the correct setting. Thoughts?

Next, the Dell page suggests changing the Ubuntu boot options to include nvme_load=YES. I have not been able to do this as when I boot the installer from my USB I never see the keyboard prompt so I am unable to enter the menu where they change the boot options.

Does anyone have any ideas or suggestions regarding this? I don't need to keep the Windows installation so solutions that involve removing Windows are also welcome.

I have DELL Precision, with 512GB SSD. I did shrink the only Drive C, and made 125 GB of unallocated space to install Ubuntu on it.

restarting the system choosing boot, install Ubuntu, the installation process does not recognize any hard disk except the Flash memory that contains ubuntu bootable.

the information from Windows 10 side:

Dell Precision 3520
windows 10 pro
Intel Core i7-7820HQ
BIOS mode UEFI
from the device manager;
Storage Controllers:
        Intel chipset SATA/PCIe RST premium controller
        microsoft spaces storage controller
        microsoft VHD loopback controller
Disk 0: (Basic)
       SSDPEKK NVMe INTEL 512GB       
       Partition Style GPT
Rapid Storage Technology:
       Controller 1, Port 0
       Port Location Internal
       Type PCIe solid-state drive
       System Disk: yes
       Controller Type: NVMe
BIOS options on power up: 
       System Configuration/SATA Operation = RAID on (Intel RST)

I've read that the Ubuntu kernel is compatible with RST and should recognize the SSD, Also the Disk 0 is shown as basic which I think means hardware RAID. What should do in this case to have a dual boot installation of Ubuntu

I dual installed Kubuntu on a computer with Windows 10, grub is on /dev/sda while the Windows boot manager is on /nvmesomethingsomething.

To install it, I had to set SATA from RAID to AHCI in the UEFI BIOS Setup. With SATA AHCI the boot of Kubuntu works. But when I try to boot into Windows, I get a BSOD with INACCESSIBLE_BOOT_DEVICE.

If in UEFI, and I select RAID instead of AHCI, I can boot into Windows, but Kubuntu's boot process results in me ending up in an initramfs terminal.

So I can get only one or the other, but never both working systems.
Is there any solution?