Originally posted by bjojoi
I wrote the boot sector to my windows disk and now i only get L 99 99 99 99 99 every time i start.
I don't know what L99... means, but if you say you wrote the BOOT SECTOR to your windows disk, then you probably corrupted your windows install.
If you can get back into windows with a bootdisk, you first need to reinstall the mbr of your fist disk. I don't know how it works under XP, but on other windows'es you open a console and type 'fdisk /mbr'. This will restore the mbr so you can boot windows.
Maybe you need to reinstall the boot-sector as well, I remembered under win2k it's something like 'FIXMBR' or 'FIXBOOT'. I'm not sure. Get a console and type 'help'.
If your system reboots properly into windows, you can boot into linux with your bootdisk. That's how I do it, too.
If this does not help you, to provide more info about what you exactly did and what you want your config to be.