problems with a new install of XP

santaliqueur

Member
Feb 8, 2005
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i have an old pentium III machine i assembled with parts i got from a friend, and others lying around my house. so, i put ubuntu linux on it, just to see what everyone was raving about. i liked it, but the purpose of this machine is to run windows while i migrate my (relatively) fast amd xp 1700+ machine to linux. i'm making the switch, and the first step was to have the windows machine up and running first, so i can switch over.

anyway...i wiped the ubuntu partition clean, formatted with the xp pro disk, and it installed the files on the newly formatted partition, and restarts, and boots from the hard drive. nothing new here, i've done this probably 50 times for myself and family/friends. but wen i restart, booting from the hdd, i get the message "error loading operating system". wtf is this? i thought that i could try to install with mnimal hardware, but i already am, i have nothing else but the essentials in this system. only the hdd, vid card, and cdrom. i'm using a valid xp disk i got issued from my school, and i also tried the old copy i used to use, and niether worked. anyone have any ideas? thanks much.

CJ
 

santaliqueur

Member
Feb 8, 2005
114
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no i didnt, but i think my friend may have run xp on this motherboard. but i could be wrong about that.

will a mobo have bios updates to support new operating systems? i know there is an update tp support a faster processor, but i didnt see anything about xp. i'll do it as soon as i get home, and as soon as i can track down a working floppy drive.

CJ
 

Smilin

Diamond Member
Mar 4, 2002
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BIOS Finds your drive, loads sector 0 including the MBR. The MBR code reads the partition table, finds the active partition (marked with an 80h), goes to the first sector of that partition and reads the boot sector.

The message "error loading operating system" is caused when:

The MBR fails to find the boot sector after 5 tries or the last two bytes of the boot sector are not 55AAh (end of sector marker).

I'm guessing one of three things:
1. You don't have a boot sector. "Fixboot <drive>" run in recovery console will fix this.
2. You don't have the correct partition marked active. Use diskpart (with no parameters, then type help) to fix this.
3. BIOS has the wrong boot drive set and the entire wrong MBR is loading. If you're single drive this ain't it.

Good Luck!