Jeff Patten wrote in a message to Mike Bilow:

 JP>    Side issue:  MO.SYS doesn't work here -- most versions 
 JP> report a sector size of 65535, the newest version I have 
 JP> doesn't even see the drive.  This prevents me from using HPOFS. 
 JP>  Browsing MO.SYS shows a reference to SCBs, which SIT says my 
 JP> DPT doesn't support.  Does MO.SYS require SCB support?

MO.SYS, and therefore HPOFS.IFS, require a particular IBM optical drive.
 
-- Mike


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