Hey everyone! I'm trying to figure out how to get my CachyOS GRUB bootloader to recognize both Bazzite and Windows 10. Here's what I'm working with: I have an HP Z4 G4 workstation with a Xeon w-2145, a 1080 Ti, and four NVMe SSDs. The setup is UEFI-based, and on my SSD1, I've got Windows 10, while on SSD2 (2TB), I installed Bazzite first and then CachyOS later. I selected CachyOS to partition the drive, so now each OS is on a separate partition on the same SSD.
The issue is that Bazzite's GRUB bootloader shows me everything, including Windows 10, but when I boot into CachyOS, it doesn't list Bazzite or Windows 10. I'd like to know how to edit the GRUB in CachyOS to include those options. I've looked into the CachyOS wiki but I'm not exactly sure how to implement the changes for my setup. Any advice would be super helpful! Thanks!
1 Answer
To solve your problem, boot into Bazzite and run `update-grub` in the terminal. This is likely the easiest fix to make both Bazzite and Windows 10 appear in the GRUB menu. If you prefer using the GRUB version from CachyOS, you'll need to tweak its config file. It seems like os-prober isn't enabled in CachyOS's GRUB, so go into that config file and uncomment the os-prober line. After that, run `update-grub` again to see if the options show up!
Thanks for the quick suggestion! That actually helped me understand where to start. For anyone using Fedora 42-based Bazzite, you can also run `ujust regenerate-grub` in the terminal to let GRUB’s OS prober find both Windows and CachyOS. Now all options show up for me in GRUB!