I had to do this recently to make a backup of a system hard drive for “just in case”…

I found some instructions using Google (https://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=181082&SiteID=1) and here is the gist of what needs to be done (to spare you from having to read the whole thread):

Run a command prompt as Administrator and do the following:

BCDEDIT /set {bootmgr} device boot
BCDEDIT /set {default} device boot
BCDEDIT /set {default} osdevice boot

Then run Ghost 8.x like this:

ghost.exe -fdsp
or
ghost32.exe -fdsp

I tried this with two hard drives (once with a test drive, then with the real one), and it worked beatifully.