SOS = just can't install StartOS on Optiplex 7040 - systematic "No Bootable Devices found" error

StartOS Support
41

It is HP Elitebook 8570p

42

I don’t have one to test with, and the BIOS documentation looks a bit sparse. If you go into the BIOS settings, and look around in the options, can you find anything related to boot mode that can be set to something along the lines of “UEFI Native” “Enable UEFI”, “Disable Legacy”, or “disable CSM”?

I would recommend flashing the StartOS installer USB thumb using Balena Etcher as descripted in the Start9 documentation (just to rule out any idosyncrasies of Rufus). If you can get the StartOS installation to create the EFI system again like you saw the first time, then we can boot into the Ubuntu live USB again and see if the empty EFI partition was a fluke, or if it contains EFI/startos like it should.

Sorry for having you repeat some things again. It is just that the BIOS mentioning UEFI is hinting that there may be a way to boot an EFI system (which I am more familiar with personally)

43

Sorry for replying late.

I can choose Boot Mode:

-Legacy
-UEFI Hybrid (with CSM)
-UEFI Native (without CSM)

The StartOS Installer USB is already flashed by Balena Etcher. (I used Rufus for the UBuntu-drive only.)

So I should choose one of the other Boot modes, then Install StartOS again and if reboot fails again retry the steps of Bliss Hodls guide?

44

Yes, I would choose UEFI Native (without CSM) to make sure StartOS gets installed with the EFI partition. After the installation, you could change it back to UEFI Hybrid (with CSM) if that is needed to boot the Ubuntu live USB. Then we can see if the EFI partition has the EFI/startos folder on there as expected, or if the partition is blank as you saw before.

The commands to check that will be:

sudo mount /dev/sda1 /mnt

ls -al /mnt

You should see a folder named “EFI” in the results. And:

ls -al /mnt/EFI

Should show a folder named “startos”

If so, then you should be able to pick up from step 2 (the mkdir command) in the instructions that BlissHodl posted earlier in this thread. Just be careful to get the slashes and spaces correct.

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45

Everything worked now, thank you so much!
It’s downloading the timechain :star_struck:

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