Can not boot external USB HD grub error 18
I've installed a debian on my externale usb harddisk, here is my partition table
There are two Harddisks one with a windows and one with a linux.
Harddisk (hd2) /dev/sdc
#1 ext3 bootable flag = on size=39.0 GB mountpoint=/
#2 swap bootable flag = off size=1.0 GB
with the debian installer i installed grub by typing (hd2). it seems like the harddisk will write something, and the installer completed this step sucessfully.
so i finished the installation, and reboot the machine. then type F8 to get into the Boot Menu and there appears a USB-Harddisk.
moved down to the entry and typed enter.
but there appears the following error:
Loading Grub Stage 1.5 (yeah im not shure, but i think it was 1.5)
and no more!
must i make separate partition /boot?
can anybody help?
thanks a lot