I've done something stupid. I tried to lock down the access rights to a disk using the security properties at disk level. However, in the process, I've locked myself out as Administrator. I can and have seized ownership of the disk, and then I can view the security properties of the disk. Howver if I try to edit and change them for administrators I get "An error occured while applying security information to: E:\ Access Denied". UAC is set to never notify. The disk is also inaccessable with an elevated command prompt. Same message "Access Denied".
Security settings as follows: CREATOR OWNER - No settings SYSTEM - All deny MY_USERNAME - All allow Administrators - All allow Users - All deny
I guess I cannot get access because I am in the users group. Can I solve this without removing myself from the Users group? I prefer not to do that because it is an Active Directory group in the Users group which I am in over which I have no control.