You can configure samba to handle the permissions, but immich will need to connect to the user’s share using their password (no ideal)

In smb.conf for each user’s share

[user_media]
   path = /path/to/user/media
   valid users = username, immich
   force user = username  # This makes all files.  appear as owned by the user
   force group = media
   create mask = 0660
   directory mask = 0770

Alternatively you can use setguid with your media group:

chmod g+s /path/to/media/dirs
chown -R :media /path/to/media/dirs
chmod 2770 /path/to/media/dirs. (2 = SetGID, 770 = rwx for user and group)

• Any new file created by Immich will automatically belong to the media group
• The SetGID bit ensures files inherit the parent directory’s group
• All users (including Immich) can read/write files as long as they’re in the media group
• Individual users still “own” their files (UID stays as the original user when they upload via Samba)

Honestly, anything you spend on that PC is a waste. You can get a 5 year old computer for under $100 and move your updated parts over.

Search Amazon for a Lenovo Thinkcentre, Dell optiplex or anything with an Intel Core i7-4770. This is by far the cheapest route.

Alternatively, if you are looking for the adventure of getting back into PC building, check out the build guides at pcpartpicker.com.

https://pcpartpicker.com/guide/