On 09.12.2021 01:17, Linux Kamarada wrote:
Hi, everyone!
I'm working on Linux Kamarada 15.3 (Leap-based Live image) and I found out that GRUB's "Boot from Hard Disk" does not work.
Then, I tried the openSUSE Leap 15.3 GNOME Live image and realized it does not work as well:
https://paste.opensuse.org/91892352
Instead of booting from the hard disk, it only shows a black screen and goes nowhere:
https://paste.opensuse.org/1207661
I tried to edit the entries and both are the same:
https://paste.opensuse.org/77657634
Additionally, I tested the openSUSE Tumbleweed (snapshot 20211206) GNOME Live image and all the screens above look the same.
I didn't test openSUSE Leap 15.4 Alpha because I couldn't find its Live images.
Do you know where the problem is?
Your menu entry exits grub and returns to firmware. What happens after that is outside of control of your image. Syslinux "Boot from hard disk" on BIOS menu explicitly loads first sector and jumps to it. On EFI it simply exits to firmware. EFI grub attempts to locate known installed systems (openSUSE, SLES) and chainload their grub. If nothing found it simply exits to firmware. So what happens on EFI is mostly outside of bootloader control.