[ElsieC]

Update: I was able to delete the corrupted folder by going to My Computer, right click on Drive L (the 505 internal drive), Properties, Tools, Error Checking Tab, Check Now, Automatically Fix Errors. This removed the corrupted file. I then flashed the drive with the Sony updater and I am back to my original 505 menus. Very happy to have my 505 back! Should I reformat the drive (which I can do from Utilities I think) before I try to install PRS+ or did the Error Check with Automatic Fix fix the problem so no reformat is necessary?

I am still unable to perform a hard reset, the 505 freezes when I get to the "Press 5 to reformat."

There is a folder in the internal memory that is corrupt that I cannot delete. Name is 1.1.01.25200.root2.1. When I try to delete it, I get the message "The file or directory is corrupted and unreadable." I tried to run chkdsk /f , got this message: Chkdsk cannot run because the the volume is in use by another program . . . Would you like to force a dismount of this volume?

Forcing the dismount didn't help, chkdsk still would not run, even with another soft reset of the 505.