Not allowed to open disk

[Rapidrob]

The HDD.....sdb1 has been there since the get go. Has worked for two years. I pulled it ( hot swap-able ) and tried it in my other LL computer and all files popped-up as you'd expect them too.
This just started to happen today after I removed Virtualbox to speed up my boot time ( more than two minutes)
Now I no longer have permission to open the HDD. It will not mount. It holds backups and my music/photo files.






I did add DeadBeef to play music as VLC's quality is not up to par yesterday, and the software worked just fine.
As I posted, I shut down last night, re-booted this morning and the sdb1 HDD cannot be opened in this computer anymore.