Hi

I want to install Windows XP Professional from a partition on my harddrive.

I have created a partition and putted all the setup files on it.

Then I formated the first partition (C:\) and started the setup in WinPE.

The setup copies all setupfiles to my C drive and then it close. When I reboot the computer says that there isn't any os on the disk.

What am I doing wrong?

It C: NTFS? Check the disk for an active partition. Ensure HDD has an MBR.

this sounds silly. I don't know what WinPE so please could someone say what it is.

C:\ is NTFS and set as Active

this sounds silly. I don't know what WinPE so please could someone say what it is.

Its a low end operating system that runs off a CD that is similar to Windows XP...(Based on it if you get Bart's PE Builder... )

I quote from a post answering a question I asked in this forum

From Here

QUOTE 

/syspart

On an x86-based computer, this parameter specifies that you can copy Setup startup files to a hard disk, mark the disk as active, and then install the disk onto another computer. When you start the computer onto which you have installed the disk, it automatically starts with the next phase of Setup. You must always use the /tempdrive parameter with the /syspart parameter.

You can start Winnt32.exe with the /syspart option on an x86-based computer running Windows NT 4.0, Windows 2000, or Windows XP Professional. The computer cannot be running Windows 95, Windows 98, or Windows Millennium Edition

The idea behind syspart is you run it, and it copies the xp files and makes the hard drive bootable. You send the hard drive to someone and they plug it in. Once they turn on the pc, xp setup starts in gui mode, at the 33 min mark.

-gosh