I made a drive on my own computer. Of course it cannot boot my computer, but I sent it to them, and it doesn't work on their computer in the same way: does not even find the OS/2 loader. Using Sysintx.com made no difference.
At this point, I think both the partition and drive images are so particular that they must be made on the original computer. I am now trying to teach them to make a clone using DFSee. They hit the error for target drive smaller than source drive, but didn't understand the message from DFSee, "Write error on 127 sector(s) at sector 0x000000000001f7f82. Continue the restore?"