Although this is an old post I found it interesting.
I have several versions of IBM hardware LT's and have been been suffering slow Ghost backups / restores using USB drives.
Long story short - ghost with -nousb option is correct for some of them. Disabling USB support in BIOS is right for others.
Took me a while to figure this out but I found I needed no magic drivers or addtional software.
Just tweak the BIOS if necessary or use the -nousb ghost switch as needed.
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