There are several files in Windows 98, far more than just two.
user.dat and system.dat
The Windows 95/98 registry is contained in two files, System.dat and User.dat.
The windows XP registry consists of several files, loaded together they constitute the "registry"/ These files are Software, System, SAM, Security, Default, and UserDiff. They are located in Windows\System32\Config and are usually hidden or considered protected system files. One other registry file is called NTuser.dat and is located in the users Documents and Settings folder.
In Windows 95, 98, and Me, the Registry is contained in two hidden files in your Windows directory, called USER.DAT and SYSTEM.DAT.
System.dat, User.dat
Regedit.exe Windows XP has only a Single registry editor (Regedit.exe) Windows 2000 ahs two registry editor Regedit32.exe Regedit.exe
System.dat, User.dat, System.da0, User.da0
Not sure but... windows 98/95 registry is contained in the System.dat & User.dat I was able to find this one for sure... the windows 95 backups are called System.da0 & User.da0 CompTIA A+ Guide to Software Fourth Edition pg. 377
Windows NT/2000 Regedit.exe and Regedt32.exe have two different functions. Windows XP has only one single registry editor.
The computer's main memory (RAM) is physical hardware used to help the computer quickly access information that it uses a lot. That is the space in which the operating system and running programs reside. The registry is a collection of files stored on your computer's hard drive that contains information and configuration information for the operating system and other programs installed on your computer. Parts of the registry may be stored in your computer's RAM while the computer is running. In the past, Windows used a collection of .INI files wherever any programs were located to store the configuration information. Then starting with Windows 95, they consolidated it into two files, and into even more files in Windows NT and 2000. Now there are 6-7 files called "hives" which comprise the system registry.
The Registry holds Windows system information. It can change each time you add or remove software, change your theme, edit the registry, etc. You can edit your registry by opening Command Prompt and typing Regedit.exe: however, do this only if you know what you're doing. Editing and modifying the registry is dangerous and could render your Windows OS unusable, forcing you to restore or reinstall.
- An ADM template is a file that is designed to be used within Group Policy to define a Registry setting and its' value. There are 5 default ADM templates that come with Windows Server 2003 and XP, but these files can only handle so many Registry settings. If you want to have more Registry settings available in your GPO, then you have an option of creating a custom ADM template A custom ADM template (or a standard one for that matter) is responsible for doing two things. First, it is responsible for defining what will be changed in the Registry. We are all familiar with the Registry by now, I hope! The Registry is broken down into two parts for what ADM templates are concerned: HKEY_LOCAL_MACHINE (HKLM) and HKEY_CURRENT_USER (HKCU).
regedit.exe and reg32.exe