Last year I bought an M-Disc drive and a bunch of M-Discs and burnt all my files in Nextcloud to them as a backup.

It’s a new year, I want to take any files added or modified in 2025 to burn a new disc.

I can work out how to get all files with a modified date in 2025, the problem is that if a file was moved into Nextcloud but wasn’t changed, the modified date doesn’t change. So I will miss files that someone has moved into Nextcloud without changing if the modified date is before 2025.

I can’t use created date as literally all the files have a created date 1 Jan 2025 or later as the created date is when they synced from the server.

Normally I’d rsync to find changes but the current copy is spread across like 10 M-Discs, and reading each of those 100GB discs at CD reading speeds is going to be painful.

Does anyone have a better idea?