I have performed Photoshop backup procedure more or less regularly for years, sometimes incremental backup, sometimes full backup. For about 5 yrs I´ve been using the same portable drive for that.
The last time I made full backup was Oct 2020. Rather soon after that the computer got broken. Now I have a new computer and new Photoshop.
I try to restore the catalogue but face a problem: Photoshop says that the October backup is only incremental backup and that I should present previous 4 discs after that. Well all four (and more) previous backups are on the same portable drive but there still is only one backup.tly file and that is dated 26.10.2020.