Completed messed up upgrading Synology DSM from 6 to 7 and now struggling to recover old Plex data

[ChuckPa]

Very simple:

1. Uninstall the DSM 7 package and choose the ERASE option (red one)

2. Using this FAQ How-To, (Scenario 2 will apply to you),
   – make sure you get every set
   – You will see ‘Full Control’ permissions assigned
   – You must remember to click the ‘Apply to this folder, sub-folders and files’ when changing permissions for the installation.

3. When you then start installation, don’t panic about the time required .
   – It has a lot of work to do.
   – Open a new tab to the syno.
   – In Filestation → Plex shared folder, you’ll see “migration.log” created. (after 2 minutes )
   – You can follow the process and status

Synology FAQ - Questions, Answers, and a few How-To's

FAQ 27 - Migrating an existing PMS from DSM 6 to DSM 7 Upgrading PMS from DSM 6 → DSM 7 DSM 7 no longer allows us to go find the metadata directory and use it across volumes before starting PMS (This is the lack of “root” privilege blocking). As such we require the following two conditions are met we will attempt to automatically migrate you; You have an existing DSM 6-created PMS installation and PMS is installed on the SAME STORAGE VOLUME as the “Plex” shared folder (this is critical) …