Can you boot into your grub menu
To enter the Recovery Menu on Zorin OS if using Legacy (MBR) boot, you can hold or tap the Left Shift key at boot to be offered the Advanced Options for Zorin Grub menu.
If using EFI Boot, then tap the esc key vigorously. Some users report that the tab key worked, instead.
You might think that this is pretty straight-forward. However...
Some BIOS are programmed to ignore a key being held down, as it is assumed to be pressed by accident or a stuck key. Cat on keyboard, coffee... The BIOS prog…
And select the earlier known kernel to boot from and test.
You may need to use an earlier kernel than the current kernel used by Zorin. This method allows you to set the kernel that you will boot into by default.
To set the new kernel to default:
Boot into the kernel you wish to be Saved.
Open terminal and run:
sudo nano /etc/default/grub
Change GRUB_DEFAULT=0 to GRUB_DEFAULT=saved
Hit enter to drop down a line.
Add GRUB_SAVEDEFAULT=true
ctrl+x to exit, then the y key to say yes to save, then the enter key to save as current configuration.
Ru…
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