FREE: CDC CMD948

Each data surfact stores 16Mbytes (or so). The removeable pack has one data surface and one servo surface. There's also a servo sufrace among the fixed platters -- the drive automatically selects which servo head to used based on which data haed is selected. The reason for the 2 servo surfaces is that the removeable pack may not centre exaclty, so for repiable operation they took the positioner reference from the fixed or removeable platters as appropriate. A 32MB drive has one fixed platter (one data surface, one servo surface).. So 16MB fixed, 16MB removable. A 64MB drive has 2 fixed platters (3 data surfaces), so 48MB fixed, 16MB removeable. And finally the 96MB one has 3 fixed platters (5 dfata surfaces), so 80MB fixed, 16MB removable. I do have the service manual for this drive. The thing I rememebr is that you don't fiddle with the mechanics without reading it first, and even then tread carefully. There are all sorts of special tools you may need. -tony