The Windows XP Architecture uses both Kernel Mode and User Mode. The kernel mode is the layer of the operating system's code that is responsible for handling such fundamental operating system items as virtual memory and scheduling which applications will run at any given time. User mode is where your actual program runs and is controlled by components of the kernel. For example, the kernel is responsible for allocating the memory that an application uses.
The two Modes are user mode and Kernel mode also used by Windows NT
source CompTIA A+ Guide to Software
Kernal mode.
User mode and Kernel mode
Real Mode and Protected Mode
The most trivial way of doing this is, to format the partition of the hard drive that has the windows 2000. However, all the data on that partition will be lost. Copy all the important documents onto a backup folder on some other patition and then continue with formatting.
user mode and kernel mode
I assume you mean Normal mode and Safe mode.
Windows 2000 applications and settings are kept and Windows XP upgrade is quicker than a fresh new installation of XP.
Two modes is termed bimodal. It is OK to have two modes; both values will be the modes.
Write both modes
Windows NT/2000 Regedit.exe and Regedt32.exe have two different functions. Windows XP has only one single registry editor.
Yes.
you add the modes that you have found together and then divide that by two