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  • DBA-ESDI Drive Layout page created

    From Louis Ohland@ohland@charter.net to comp.sys.ibm.ps2.hardware on Thu Feb 12 08:58:38 2026
    From Newsgroup: comp.sys.ibm.ps2.hardware

    http://ps-2.kev009.com/ohland/8550/DBA-ESDI_Drive_Layout.html

    Lots of moving parts. I pine for the heady daze of IML partitions...

    Heck no, it is nowhere near done...
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  • From Louis Ohland@ohland@charter.net to comp.sys.ibm.ps2.hardware on Thu Feb 12 16:25:12 2026
    From Newsgroup: comp.sys.ibm.ps2.hardware

    So, I am quite kontuzed.

    So, we have a DBA-ESDI drive. FAIK, it is a Physical CHS device.

    IBM defines it as Cylinders [Data, Spare, CE, Primary, Secondary, and
    Factory Defect]. So, in some drives, there are 33 sectors in a track.

    But... how many tracks in a cylinder?
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