ok just found the answer.
Maybe a lesson ...
wath did go wrong. I had some hardisk space left (20 Gb) so i created a new partition (3).
After it was formatted i did not see the newly created e drive in the explorer.
Went back to disk managment and marked the partition as active. I still couldn't see the E drive in explorer.
So i rebooted the machine. So probably some off you will already know what happend
Indeed Ntldr is missing. Ok no problem reboot from cd start recovery console login ..
fixboot, fixmbr, copy ntldr, ntdetect.com from i386 and reboot ...
Still same problem ? ok found a EMR diskette (sometimes i do wath has to be done
boot from EMR (after changing boot.ini to my sytems configuration) and yes the system reboots.
ok copy the files from boot diskette to c:\ reboot ... ntldr is missing... reboot from diskette ok system up.
post messages and continue searching in newsgroup and found
http://support.microsoft.com/default.aspx?scid=kb;en-us;Q228004
Disk manament .. mark C: as active ... reboot ok.
Microsoft .. a small warning when someone try to set a second partition active on a running system would be nice.
Greetings form Be