Installing Windows XP
While I was installing Windows XP as a VirtualBox guest operating system I got the following error message from the Windows XP installer ''"No valid system partitions were found. Setup is unable to continue."''
The solution was to start the installer with the '/syspart:c:' argument.
Select Disk 0 Clean Create Partition primary Active Assign Letter=C Detail Disk exit
format c: /fs:ntfs /x /q