I used to have Windows and Ubuntu installed on my laptop but I've decided to wipe Windows and just go with Ubuntu. After installing Ubuntu with USB and wiping Windows I've gotten this booting issue.
I've tried reinstalling Ubuntu, having dual installed Ubuntu, and just desperate stuff in general. The error that I get before trying to boot off of my USB is:
Failed to open \EFI\BOOT\mmx64.efi - Not Found Failed to load image \EFI\Boot\mmx64.efi: Not Found Failed to start MokManager: Not Found
Current Disk situation from USB non-installed Ubuntu's disk utility:
- Size: 537 MB
- Partition Type: EFI System
- Contents: FAT(32-bit version) - Not Mounted
- Size: 503 GB
- Partition Type: Linux Filesystem
- Contents: Ext (version 1.0) - Not Mounted
- Size: 8.5 GB
- Partition Type: Linux Swap
- Contents: Swap (version 1) - Active
I still have 489GB of free space from the dual boot partition. I'd want to get rid of the partition and just have 1TB Ubuntu but it doesn't even boot.
I've tried boot-repair but still same result.
This post on itsfoss helped me to solve this problem the most.