How to use GHOST to backup the system partition to a external hard disk?

Notebook would like to replace the hard drive, intended to drive the existing system backup to a removable hard disk and replace the new hard drive, use GHOST to restore the backup system.

However, after I entered the GHOST, only to show my first hard disk (partition C and D), while connected to the USB interface, the mobile hard disk is not being displayed, if a backup, only the default backup to my D zone, but the I D, there are bad sectors and can not work properly. Later, with a key GHOST, read description as if you could choose to back up to the mobile hard disk, but the boot into a key GHOST, the screen displays "FAT32 BPB found with OxEB (jmp) leading the boot sector
Flopies_orig = 0, Harddrivers_orig = 1 .........( other non-written). "

GHOST is running under DOS, in the first drive under DOS in order to use USB to connect USB devices. DUSE.exe DUSELDR.COM that these are two USB drives under DOS, using up a lot of trouble to build a justice with DiskGenius under windows a Disk Utility is very simple to use good