Dear Shane,
Checked the permission before and after compression - they do NOT differ. Herein I show them:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\hivelist
ADMINS - FULL, READ
SYSTEM - FULL, READ
REASTRICTED - READ
ALL APLICATIONS - READ
EVERTONE - READ
Windows\ServiceProfiles\LocalService\NTUSER.DAT
SYSTEM - FULL, MODIFY, READ & EXECUTE, READ, WRITE (OWNER ADMINISTRATOR)
LOCAL SERVICE - FULL, MODIFY, READ & EXECUTE, READ, WRITE (OWNER ADMINISTRATOR)
USER - FULL, MODIFY, READ & EXECUTE, READ, WRITE (OWNER ADMINISTRATOR)
ADMIN - FULL, MODIFY, READ & EXECUTE, READ, WRITE (OWNER ADMINISTRATOR)
Windows\ServiceProfiles\NetworkService\NTUSER.DAT
SYSTEM - FULL, MODIFY, READ & EXECUTE, READ, WRITE (OWNER ADMINISTRATOR)
LOCAL SERVICE - FULL, MODIFY, READ & EXECUTE, READ, WRITE (OWNER ADMINISTRATOR)
USER - FULL, MODIFY, READ & EXECUTE, READ, WRITE (OWNER ADMINISTRATOR)
ADMIN - FULL, MODIFY, READ & EXECUTE, READ, WRITE (OWNER ADMINISTRATOR)
Users\....\ntuser.dat
SYSTEM - FULL, MODIFY, READ & EXECUTE, READ, WRITE (OWNER ADMINISTRATOR)
USER - FULL, MODIFY, READ & EXECUTE, READ, WRITE (OWNER ADMINISTRATOR)
ADMIN - FULL, MODIFY, READ & EXECUTE, READ, WRITE (OWNER ADMINISTRATOR)
Users\Assi\AppData\Local\Microsoft\Windows\UsrClass.dat
SYSTEM - FULL, MODIFY, READ & EXECUTE, READ, WRITE (OWNER ADMINISTRATOR)
USER - FULL, MODIFY, READ & EXECUTE, READ, WRITE (OWNER ADMINISTRATOR)
ADMIN - FULL, MODIFY, READ & EXECUTE, READ, WRITE (OWNER ADMINISTRATOR)
If I can do anything else please let me know,
Thanking you.