Grr, I see you've never had to work with CUSTOMERS before. OK, a guy brings you in a Compaq, with HX chipset. He asks what you can do with it. You tell him you can upgrade it with a new motherboard, CPU, and RAM, Case, Power supply. Or you can sell him another system.
Now he likes the fact that if you UPGRADE his system he can get the whole deal for $350. You like the fact that the parts only cost you $200. But there's a hitch, his CD won't load an non-Compaq system.
Case #2. Someone ask you to upgrade his system. Probablem is, he doesn't know where his CD's are. He has a lot of stuff, autocad, office, etc. You can't do a clean install without the CD's
Case #3, a person has a large amount of files and no way to transfer them, no CDR, too large for floppies, etc. You COULD spend HOURS backing their stuff up for them: NO.
Case#4, you know the person is just going to say "Why can't I play SuperFlipper98? Why did you delete this? I'm telling all my friends what a crackpot you are...
Case #5, a person has installed a bunch of stuff using his 56k modem. Hundreds of hours of install time over the past 3 years, no backup installation files.
You end up needing to KEEP the stuff that's already ON the drive.
OK, now say it's your own system. You don't want to loose files from any location you might have forgotten to check on. Your OS has already crashed badly, so you can only do backups from a DOS prompt.
Or say you just don't WANT to spend the next 8 hours of your life reinstalling every bit of software, hunting for CD's (add 2 hours as needed), hunting for keys (where DID I place that Office 2000 key?), etc. Best hope if you have everything in hand is you STILL spend the next 8 hours installing everything and downloading updates.
A reinstall on top of the old OS is 98% effective and NO WORK at ALL, just get the installation started, come back in an hour, and LOOK, it's DONE, you didn't even have to set their and wait for it to ask for input!
<font color=blue>You're posting in a forum with class. It may be third class, but it's still class!</font color=blue>