I have an Inspiron 5537, running Windows 10.  A few days ago I had a large Windows update which, among other things, changed password login to pin login.  The Windows update was followed by a Dell update.  After that, I noticed I was getting a low disk space warning on my E drive.  I think this is the recovery drive.  It says there is 32 MB free out of 507 MB.  I double-clicked on drive E and it says folder is empty.  I checked hidden items to try to see what is on this drive, but no luck.  I also tried using Disk Management to try to increase the size of drive E, but Extend volume (as well as Shrink volume) options are not even present.  

Anyone know how I can see what is on the drive and/or increase space on the drive?

Thanks much!