I suspect there were no issue in the first place. A lot of time ago, if torrent client encountered files are missing, you had to run long process of verification for them to become available for seeding.

Now, if torrents switched to “files are missing” you can restart torrent client and seed like if nothing happened. No need for categories even. Also, function “Set location” can be used to move torrent to external storage.

Confirmed as well. Also, stopping them before unmounting drive doesn’t prevent missing files error.

Seems reasonable, I didn’t thought about port conflict. But in this scenario not running both clients at the same time also is an acceptable solution.

Thank you for this clarification, I will try to exit qbit and launch it again when HDD is accessible. Maybe it will reset those error statuses. I think it didn’t work some years ago (error status remained, had to start verification).

“regular check” - do you mean verification? Verification takes a lot of time, verifying 10s of gigs will take a lot of time. What do you forget, stopping torrents?

I can move, but next time when I will launch qbt without external HDD accessible, those torrents will gain error status “Files not found” and will require a long verification process. This is what I’m trying to avoid.

I will check how categories can help managing this, thx

I’ve heard DeltaChat proved to be reliable for Iran protesters.