What does the name MFT3500 for a deleted folder mean?
If DataUndeleter finds on NTFS drives a deleted file or directory whose parent folder (the folder which contains this file) is known on the basis of the MFT entry number but that exists no longer, it will display the MFT entry number of the not existing parent folder because the exactly name is no longer available. The root folder has a special meaning, because it is the entrance to all the other folders on a drive. That is why DataUndeleter names it as ‘MFT5 (Root)’. It is advisable to look in this folder first when you are looking through the recovered files.