Strange UEFI installation

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Strange UEFI installation

Postby Radvan » 2020-12-13 19:08

My old HD has gone. They gave me a SSD disc, some Samsung. It is NVMe most likely. The Debian 10 netinst CD does not know it in Legacy mode so that I had to switch to UEFI. Now, strange things started to happen.
(1) If I select "Advanced options" -> "Expert install", the installer does not find the disk, even in UEFI mode. It shows a short menu with "verify CD" and so on but with no disk related options.
(2) If I select "Install" , the installation runs. It seems to run OK to the end. Then the comp is rebooted and crashes with "Operating system not found". The end.
(3) Nevertheless, if I start the comp and invoke the boot menu (F12), and select "UEFI boot" -> "Debian", the installed Debian is found and runs.
(4) If I shut down the runnig Debian and then power on the comp again, I get "Operating system not found" again. I have to reboot and click on F12 until I get boot menu. Then select UEFI Debian.
(5) I also tried rescatux (0.73). It does not find the disk.

What should I do? I would like to get rid of the boot menu every time I start my comp. I would like to understand the nonsense above a bit. Any ideas?

It is Dell Inspiron 7720 (i7) so that the BIOS settings are rather none. The netinst ISO was Debian 10.6 .
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Radvan
 
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Re: Strange UEFI installation

Postby Radvan » 2020-12-14 13:45

Answering myself: I need to switch off not only Secure boot but also Legacy ROM suppert. Debian now starts without need to select it from the F12 menu.

Q: After switching off Legacy boot support in BIOS settings (F2), all boot options (CD, etc.) vanished. Survived only UEFI Debian and UEFI Network. Does it mean that I have to reenable the support before booting from a CD? For example, my Debian has crashed seriously for some reason and I need to reinstall...

[Edit] New feature has been discovered: Now, I cannot suspend the comp. Once suspended, the comp never wakes up. I have to powe off and power on. Is it possible to enable suspending now?
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Re: Strange UEFI installation

Postby Head_on_a_Stick » 2020-12-14 18:55

Radvan wrote:I need to switch off not only Secure boot

Debian buster supports Secure Boot but some UEFI implementations require that the loader is marked as "trusted" from the firmware ("BIOS") menu.
Black Lives Matter

Debian buster-backports ISO image: for new hardware support
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