When you hit the power button on your computer a whole lot of stuff happens. We call this the boot process. In the days when I first started using computers there was literally a "boot disk", a floppy (5.25" not a 3.5") disk that told the system where to go and what to do so that the operating system would start up. Since then the boot sequence has become somewhat more complicated. So let me take you thru the steps the computer takes to get started. For my example I'm going to use a Windows XP system.
You can improve your booting time of windows xp just by using startup manager.
Yes. There is a process called Dual Booting, but it requires two hard drives. Just search for "how to dual boot windows vista and windows XP?".
Boot.ini,boot.exe,ntldr
The following booting files are required to start Windows XP: NTLDR, Boot.ini, and Ntdetect.com. The following files are optional when starting Windows XP: Ntbootdd.sys and Bootsect.dos. The following files are required to start Windows 7/Vista: Bootmgr (Windows Boot Manager) and BCD (Boot Configuration Data).
Dual booting means two operating system installed on PC. for example you install windows xp and windows vista at the same time. or windows xp and Linux on same PC. Dual booting is only a term you can install more than one operating system on one PC. for example you can install 10 windows xp copies on your 10 drives.
the three files in booting files in windows xp boot.ini ntldr and ntdetect.com
Because windows 7 has stablity updates the same as windows vista dose, windows xp uses unsupported service packs. as service pack 3 is now out.
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All Windows XP discs are bootable anyway, and it is very unlikely to be worthwhile installing Windows XP on a machine that isn't capable of booting from a CD.
BOOT.INI z
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the logon screen appears