Error with grub-install when trying to install Linux Mint

March 27, 2026 3 answers
Asked by PixelPioneer99
I'm having trouble installing Linux Mint Cinnamon on my PC. Every time I attempt to run the command 'grub-install /dev/sda', I encounter an error. I'm using the "Something else" option in the installer to set up my partitions as follows: 25GB for root, 8GB for swap, 500MB for EFI, and the remaining space of my 500GB drive for home. My brother shares this PC and uses Windows, so I can't simply erase everything. If I can't resolve this issue, I may have to stick with Windows, which I really don't want to do.

Answers

CuriousCoder101
Also, double-check that you included a space between โ€˜installโ€™ and โ€˜/devโ€™. It's a common typo that can lead to problems.
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TechieTina42
It seems like there could be an issue with the command you're using. Make sure that you're using the correct syntaxโ€”try running 'mount /dev/xxx /boot/efi' followed by 'os-prober; grub-install'. That approach generally works for Debian-based systems like Mint.
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LinuxLover88
Have you checked what other block devices are present on your machine? Sometimes that can cause conflicts, and it might help to figure it out.
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