you can do like this..
1. Convert you partition into NTFS file system.. [since you have NTFS already skip this step..]
2. Create user with password you would like to permit access to..
3. Select folders, and check properties -> Advanced -> (check) Encrypt contents to secure data..
4. After all files get encrypted..
- Start -> Run -> mmc.exe
- in mmc.exe, File -> Add/Remove Snap-ins -> Add (stand-alone) -> Certificates -> My User Account..
- select Console-Root -> Certificates - Current User -> Personal -> Select Certificate (right side)..
- Right Click Certificate on right side -> All Tasks -> Export -> Yes Export Private Key -> (check)Include all certificates in certification path if possible + (check) enable strong protection -> put password for certificate -> put filename to export to..
5. To import certificate after windows has been reinstalled..
- Start -> Run -> mmc.exe
- in mmc.exe, File -> Add/Remove Snap-ins -> Add (stand-alone) -> Certificates -> My User Account..
- select Console-Root -> Certificates - Current User -> Personal -> Select Certificate (right side)..
- Right Click right side -> All Tasks -> Import -> Select certificate file -> enter password, (check) enable strong key.. + (check) mark this key exportable.. -> Place in personal -> finish..
Remarks..
1. same username and password has to be put for user even after windows has been reinstalled..
2. if password of user is changed, encrypted files are inaccessible even after applying certificate..