I'm new to Linux and trying to triple-boot my test machine, which currently runs Windows 10 and Windows 11, with Linux Mint. I downloaded the Mint ISO, used Rufus to format a flash drive with GPT partitioning and FAT32, and managed to boot from it. However, during installation, I encountered a message stating that I couldn't proceed because the drive was encrypted with BitLocker. After decrypting the drive from Windows 11, I attempted the installation again but ran into a new error: EFIBOOTmmx64.efi not found, alongside messages about failing to load images and the MokManager.
I reformatted and recreated the installation drive, but the same error popped up. I'm really stuck here and would appreciate any help!
1 Answer
You might want to try disabling Secure Boot in your UEFI firmware settings. It's a common fix for this kind of issue. Sometimes, Secure Boot can interfere with Linux installations, especially if it's not set up correctly.

Thanks for the suggestion! I'm curious though, why did it work with Secure Boot enabled before I decrypted the drive? And will turning it off mess with my Windows 11 setup? I remember seeing something during Mint's installation about needing Secure Boot for third-party codecs.