Windows Registry Files
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Posted by
Sushil
Windows Registry Files
The windows registry architecture in Windows XP and later versions has changed as lot from it predecessors including Windows 9x and Winodws ME. A hive in a windows Registry contains groups of keys, subkeys, and values in the registry that has a set of supporting files that contain backups of its data. The supporting files for all hives except HKEY_CURRENT_USER are in the %SystemRoot%\System32\Config folder on Windows NT 4.0, Windows 2000, Windows XP, Windows Server 2003, and Windows Vista. The supporting files for HKEY_CURRENT_USER are in the %SystemRoot%\Profiles\Username folder.
| Registry Hive | System Files |
| HKEY_LOCAL_MACHINE\SAM | Sam, Sam.log, Sam.sav |
| HKEY_LOCAL_MACHINE\Security | Security, Security.log, Security.sav |
| HKEY_LOCAL_MACHINE\Software | Software, Software.log, Software.sav |
| HKEY_LOCAL_MACHINE\System | System, System.alt, System.log, System.sav |
| HKEY_CURRENT_CONFIG | System, System.alt, System.log, System.sav, Ntuser.dat, Ntuser.dat.log |
| HKEY_USERS\DEFAULT | Default, Default.log, Default.sav |
In Windows 98, the registry was stored in files named User.dat and System.dat whereas Windows Millennium Edition, the registry files were named Classes.dat, User.dat, and System.dat. The new installation of Windows 98 created a files called System.1st. This file stored all the configuration about hardware and was used by skilled technicians to restore registry to recover corrupt registry and resulting hardware issues
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