A. The first differences is that difference files are used:
| Windows NT | Windows 9x |
| NTuser.dat | User.dat |
| NTuser.dat.LOG | User.da0 |
| NTuser.man | User.man |
The Windows 9x User.da0 and the NT NTuser.dat.Log files work in a different way. Everytime you log off in Windows 9x a copy of User.dat is copied to to User.da0. Windows NT uses NTuser.dat.LOG as a transaction log file to provide fault tolerance. This allows Windows NT to recover the user profile if a problem occurs while Windows NT is updating NTuser.dat.
This obviously means you can't share a profile between the two OS's. Other differences include:
- Windows 95 does not support common groups
- Windows 95 user profiles do not copy all desktop items, copied items are restricted to shortcuts (.lnk) and program information (.pif) files.
- Windows 95 user profiles don’t support a centrally stored Default User profile.
- Windows 95 clients don’t use the Windows NT Server profile path to obtain roaming user profiles. They can be retrieved only from the user’s home directory.
- To use mandatory user profiles on computers running Windows 95 on a Windows NT Server network, an administrator must create a custom user profile for each user and copy the user profile files to each user’s home directory.
- Windows 95 does not support the Application Data folder that makes up the folders structure.
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