How to delete old pagefile.sys and hiberfile.sys on secondary disk (old windows install)
Solution 1:
The files are protected using NTFS ACLs. Use takeown to take ownership of them.
Solution 2:
Combining the answers it's quite simple, no external programs needed.
From a dos prompt:
icacls hiberfil.sys /grant everyone:f to get access to the file
attrib -h -s hiberfil.sys to make it visible for deletion
del hiberfil.sys to delete the file
For pagefile.sys it works the same way.