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I have installed 3 operating systems on my computer(windows, ubuntu and cent os). While installing centos I realized that my efi boot loader has been removed, and I can't access any operating system. How can I rebuild/fix efi boot partition? Thank you

farhad.a
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    Does this answer your question? [Moving Grub to a new drive to get rid of Windows](https://askubuntu.com/questions/1076448/moving-grub-to-a-new-drive-to-get-rid-of-windows) – vanadium Jul 17 '20 at 12:23

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An EFI partition is a fat32 (or fat12 or fat 16) formatted partition with a specific partition type identifier. Can create such partition with partitoning tools. Then reinstall Grub. Here on Askubuntu, a detailed walk trough is provided where an EFI partition is created, and then Grub is reinstalled on the drive containing the new EFI.

vanadium
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