Mint 20.2 system. Need to get to the BIOS so that I can boot from the USB stick into GParted, which is suddenly not happening automatically. I upgraded all my packages an hour ago (pretty sure grub updated too). Tried rebooting about five times now, holding down delete or f11 or f3. Delete definitely worked before the upgrade. I have tried pressing it several times and holding it down. I've tried pressing it constantly immediately after starting the reboot process. No matter what I do it just goes to the Mint splash screen.
The chipset is a Intel Celeron 3205U (Broadwell, embedded) if that helps. I can't find any info in the system manual as to the BIOS. I flashed the BIOS about 6 months ago to the most current version. The system is not dual boot. The machine's product page is here. The MSI product page is less helpful. The system is 6 years old.
Tried system-ctl reboot --firmware-setup and it says my firmware does not support that.
Tried reboot -f and it didn't go to the BIOS.
Tried a full power down and reboot, still can't get to the BIOS.
Tried editing grub to use menu instead of hidden, the grub menu won't show. The timeout is set to 10.
I have gotten in to the BIOS about 10 times in the past 2 days with no issue, just hold down DEL and it get's there. I am positive the USB stick is bootable, I booted in to Clonezilla off of it this morning. It's definitely plugged in.
I know there are similar questions here and I have tried those answers. The only thing I can think to do is factory reset my BIOS but I don't know if that's the smart choice.
Grub config:
GRUB_DEFAULT=0
GRUB_TIMEOUT_STYLE=menu
GRUB_TIMEOUT=10
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
GRUB_CMDLINE_LINUX=""
