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Re: Plex Media Server Instructions
Posted: 01 Jan 2026, 05:45
by Authenticate
Hello I upgraded my NAS from an F2-221 to a newer F2-425 (non-Plus) model and connected my D4-300 DAS to it. The system detects that the DAS is attached, and I can see my files through the file manager. However, when I try to add the files to my Plex server, I can see the USB device and its folders, but none of the media content appears. I didnt have this issue with the f2-221 server it was showing my mounted usb's and i was able to add them.
Re: Plex Media Server Instructions
Posted: 01 Jan 2026, 07:08
by Authenticate
Ok looks like when i create a new folder and transfer the media to that newly created on it finds the media now. not sure why its working that way maybe the folder itself it having an issue.
Re: Plex Media Server Instructions
Posted: 02 Jan 2026, 21:20
by CursaYang
I'm glad you solved this problem. The inability to scan content in the media library is usually related to folder permissions.
Re: Plex Media Server Instructions
Posted: 25 Apr 2026, 20:31
by ShoutingMan
I just installed Plex on my F4-425 running TOS 6.
It did not create a new user “plex”: Step 3 in the instructions can’t be followed. Plex cannot access the folders in my “media” shared folder
3. Configure permissions for the newly created "video" shared folder: Edit the newly created shared folder and set the read and write permissions for the application user "plex" that is automatically generated during the installation. If the permissions for the plex user are not set, the Plex Media Server will be unable to scan the media files in that directory while running.
How do i setup Plex on the TerraMaster? Thanks.
Re: Plex Media Server Instructions
Posted: 25 Apr 2026, 21:14
by ShoutingMan
CursaYang wrote: ↑10 Dec 2025, 09:37
Hello, after installing Plex, a shared folder with the same name is automatically generated. When creating a user, a personal directory with the same name is also generated, which causes a conflict.
What is the solution?
Re: Plex Media Server Instructions
Posted: 25 Apr 2026, 22:11
by EriChan
In the TOS system, the management mechanism for application users (such as Plex and Emby) differs from that of regular local users. They usually do not appear in the "Control Panel > Users" list, but exist as special application entities.
If you cannot find such a user in the permission settings, there are usually several possible causes:
- Incorrect viewing location: This user is only visible in the "Permissions" settings interface of the shared folder, not in the regular user management interface.
- Application not properly enabled: If the Plex app is installed but you have not clicked "Enable" or it failed to start, the system may not have activated this application user yet.
- Abnormal system environment: In rare cases, the installation script may fail to create the underlying system user.
Recommended operation steps:
Please make sure you are looking for this user in the edit interface of the shared folder, not in the user management module.
1. Confirm the application status: Go to "App Center > Installed" to ensure that Plex Media Server is in the "Enabled" state.
2. Access permission configuration:
Go to "TOS Interface > Control Panel > Access Permissions > Shared Folders".
Select the folder where you store your media files (such as "media" or "video") and click "Edit".
3. Locate the application user:
Switch to the "Permissions" tab in the pop-up window.
Look for the entry named plex in the user list. In TOS 6, application users are usually mixed with regular users or marked with a special icon.
4. Grant permissions: Check the "Read & Write" permission for the plex user and save the settings.
Re: Plex Media Server Instructions
Posted: 26 Apr 2026, 00:15
by ShoutingMan
EriChan wrote: ↑25 Apr 2026, 22:11
In the TOS system, the management mechanism for application users (such as Plex and Emby) differs from that of regular local users. They usually do not appear in the "Control Panel > Users" list, but exist as special application entities.
If you cannot find such a user in the permission settings, there are usually several possible causes:
- Incorrect viewing location: This user is only visible in the "Permissions" settings interface of the shared folder, not in the regular user management interface.
- Application not properly enabled: If the Plex app is installed but you have not clicked "Enable" or it failed to start, the system may not have activated this application user yet.
- Abnormal system environment: In rare cases, the installation script may fail to create the underlying system user.
Recommended operation steps:
Please make sure you are looking for this user in the edit interface of the shared folder, not in the user management module.
1. Confirm the application status: Go to "App Center > Installed" to ensure that Plex Media Server is in the "Enabled" state.
2. Access permission configuration:
Go to "TOS Interface > Control Panel > Access Permissions > Shared Folders".
Select the folder where you store your media files (such as "media" or "video") and click "Edit".
3. Locate the application user:
Switch to the "Permissions" tab in the pop-up window.
Look for the entry named plex in the user list. In TOS 6, application users are usually mixed with regular users or marked with a special icon.
4. Grant permissions: Check the "Read & Write" permission for the plex user and save the settings.
Ah. (Emby did this configuration automatically.) Thanks, that got me close enough to then figure it out. The way to do this in TOS 6 for Plex is:
Control Panel > Shared Folder > [Folder] > Edit > Permissions > Application user (in drop down) > plex > Check Read / Write