Synology DSM 6 > 7 Upgrade

Plex Media Server NAS & Devices
2

  1. User PlexMediaServer isn’t a regular user. You won’t see it listed under Users

  2. Since you didn’t get any Permission warnings / errors when installing, something probably modified the permissions of your “Plex” shared folder manually and broke it for the upgrade

Here’s the quick How-To to get working

  1. Confirm your “Plex” shared folder still has “Library/Application Support/Plex Media Server”.
  2. STOP HERE if it does not.

Continuing

  1. Uninstall PMS with the ERASE option (the empty DSM 7 must be removed)

  2. Follow this very carefully. Some steps might not apply but 99% will apply
    – Do not skip any of the “Apply to this folder, sub-folders. and files” checkboxes

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