NTLDR or NTDETECT.COM Not Found

If you get an error that NTLDR is not found during bootup,
If you have FAT32 partitions, it is much simpler than with NTFS.
Just boot with a Win98 floppy and copy the NTLDR or NTDETECT.COM files
from the i386 directory to the root of the C:\ drive.
For NTFS:
Insert and boot from your WindowsXP CD.
At the first R=Repair option, press the R key
Press the number that corresponds to the correct location for the installation of Windows you want to repair.
Typically this will be #1
Enter in the administrator password when requested
Enter in the following commands (X: is replaced by the actual drive letter that is assigned to the CD ROM drive.
COPY X:\i386\NTLDR C\:
COPY X:\i386\NTDETECT.COM C:\
Take out the CD ROM and type exit

Changing Drive Letters

If you want to change the letters assigned to your fixed or removable drives:
Right Click on My Computer
Select Manage
Select Disk Management
For a Fixed Disk:
Select it
Right click
Select Change Drive Letter and Path
Click on the Edit button
Enter in the letter you want to use
For a Removable Disk:
In the lower, right hand panel, right click on the Disk or CD ROM #
Select Change Drive Letter and Path
Click on the Edit button
Enter in the letter you want to use