Unable to delete files - permission access denied

Greetings,

I am trying to delete files & folders from a second internal hard drive used for data only, but I am unable to complete the task as first I have to enter my password, then I get the error message 'The operation can't be completed because you don't have permission to access some of the items.'

Getting Info for that drive and folders indicates that I have Read & Write permissions. I even re-applied the permissions using the drop down gear. I have restarted the workstation as well. No luck.

I ran the disc utility application to Verify Disc, which returned a message the the disc was good. Verify or Repair Disc Permissions were greyed out, which I believe they are supposed to be.

Any thoughts will be appreciated. Thanks, Scott