Question : D drive full and access denied

XP installed incorrectly so the new C drive has new windows  but the D drive has old stuff with all the file and documents needed to recover.  However, I can see the D drive is Full with 0% space left.  I cannot open D saying access denied.
Any ideas on how to recover old files?
Thanks in advance

Answer : D drive full and access denied

I have had this happen before, Nobus.  Need to check the NTFS security and add a local user from the new installation.  May need to propagate to get all of the folders.  Hope this helps.