Quoting Fred Cisin <cisin at xenosoft.com>: > The "official", "standardized" support of 3.5" 720K in 3.20 was with use > of DRIVER.SYS and/or DRIVPARM. DRIVPARM was incompatible with IBM's BIOS, > and therefore was undocumented in PC-DOS. Do you remember the details of the problem with DRIVPARM? Mike