Roon on Mac Mini (Big Sur) can not enter external SSD

[Martin_Webster]

Check that you have permissions set correctly:

Mac mini M1 Chip compatibility with external hard drive

This problem may be related to Roon not having permission to access the drive. Can you try this: On the Mac open System Preferences > Security & Privacy, go to the Privacy tab and on the left select Full Disk Access. Now add Roon. You’ll need to unlock the padlock and press +. Now do the same for Files and Folders and make sure Roon is added and Removable Volumes etc. are checked. Restart Roon and try again.