Find the BIOS settings to boot Ubuntu, which is on a disk

Question

I have a Dell 7920 tower workstation with the following disks and operating systems  * 256 GB NVMe - Windows 10 * 512 GB NVMe - CentOS (7.6 I believe ) * 1 TB SATA SSD - Ubuntu 20.04) * 4 TB SATA hard drive - CentOS  (7.7 I believe) I was never happy about the way to select the OS I wanted to boot, as I never see all options presented. Instead I had to disable a disk in the BIOS, which then obviously prevented that OS from booting. I had to change the motherboard. Since then, despite the BIOS detects the 1 TB SSD with Ubuntu on it, there's no way I can find of booting Ubuntu. I put a Ubuntu USB stick in the workstation, booted from that. It detected Ubuntu 20.04 is already installed. So I know Ubuntu is on the disk, but I'm at a loss as to how to get the 7920 to boot it. The operating system never shows up in the BIOS as one I can select. I know its possible to add a bootable drive in the BIOS settings, but one needs to know exactly what to put, and I don't have a clue. Any suggestions how to get out of this?

speedstep · Answer

Dell Doesn't support Linux of any kind unless your system shipped with Linux.

Canonical does support linux but said support is not free.

Start over buy at least 2 drives.

Use only 1 drive 500gig or 1 TB or 2TB.

Install WIN10 first

Clone the 500 gig to a 1TB or clone 1tb to 2TB

OR

Resize the drive so that you can install ubuntu alongside windows

All other drives can be used as storage but must be CLEANED with DISKPART and then formatted as EXFAT

This is how my systems are setup and they work fine with a grub boot option for Linux or Windows at startup.

Precision Fixed Workstations

Was this post helpful?