obě jsou primary ? no každopádně ten fixboot z recovery console po formatu by to měl vše vyřešit...

možná bude potřeba ještě toto...

To restore Windows XP Professional versions of Ntldr and Ntdetect.com on x86-based systems

1. Start Recovery Console by using the Windows XP Professional operating system CD.
2. Navigate to the system partition root and type the following commands from the Recovery Console prompt:

copy drive:\i386\ntldr

copy drive:\i386\ntdetect.com

In the preceding two commands, drive represents the letter of the CD-ROM that holds the Windows XP Professional installation files.
3. Answer the Overwrite system? (Yes/No/All): prompts by pressing Y.
4. Restart the computer.


popř. bootcfq /rebuild