Comment 25 for bug 1090829

In one dup of this bug the user reported that it was resolved by running chkdsk a few times in windows to repair the fs. With the attached esp image, I found that dosfsck -a detected errors but failed to repair. It seems dosfstools has a bug when it comes to saving lost chains as recovered files, and in that image, the /EFI/ubuntu directory consists of a FAT chain that contains a free cluster, which is invalid. Running dosfsck -r and saying yes a few times eventually repaired the problem.

I wonder why so many people seem to have corrupt filesystems on their ESP.