I installed Ubuntu as dualboot for a specific task to a 30 GB partition. It worked, however I found out I could do the same thing in macOS, so I removed the 30 GB partition. I also wanted to remove Ubuntu files from the EFI partition, but
diskutil no longer mounted the partition.
$ diskutil mount disk0s1 Volume on disk0s1 failed to mount If the volume is damaged, try the "readOnly" option $ diskutil mount readOnly disk0s1 Volume on disk0s1 failed to mount If the volume is damaged, try the "readOnly" option
However, I can still mount the partition with the
mount command and modify it's contents.
$ sudo mkdir /Volumes/EFI $ sudo mount -t msdos /dev/disk0s1 /Volumes/EFI
I can also still boot into Windows, meaning the EFI partition is fine. Why is
diskutil failing to mount this partition and how can I fix it? I also read that formatting the EFI partition will break future firmware updates, so I don't want to format it.
Here's the output of
$ diskutil list # Not the full output /dev/disk0 (internal, physical): #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *500.3 GB disk0 1: EFI EFI 209.7 MB disk0s1 2: Apple_APFS Container disk1 425.1 GB disk0s2