Comment 7 for bug 1729695

I have the almost the same system configuration as Paul Nickerson, except that backups are stored on a separate NTFS-formatted drive, that neither Ubuntu nor Windows boots. Disabling Fast Startup solved the problem for me too. Thanks for sharing the solution!

I have noticed that while Fast Startup is enabled, Ubuntu mounts the drive read-only. In my opinion there is still a bug in duplicity, as it doesn't handle this situation properly and crashes. It would be much better if it checks whether the destination is read-only and stops with a clear message, indicating the problem, instead of crashing.