mpd@anomaly.sbs.com (Michael P. Deignan) (08/23/90)
Newsgroups: comp.sys.ibm.pc.hardware References: <26c74115-120.2comp.sys.ibm.pc.hardware-1@vpnet.chi.il.us> <9wB6N1w162w@ijpc.UUCP> <304@smosjc.UUCP> In comp.sys.ibm.pc.hardware you write: >I have not seen any drives with more than 15 heads and I believe ESDI uses >35 sectors/track. Is there some way to address more disk space than 265.5MB >without playing games? By games, I mean fooling DOS into thinking that >there are more than 35 sectors/track. The controller cards (generally Western Digital WD1007-whatever) have a on-controller feature which "remaps" the drive if it has > 1024 cylinders into a format which DOS can use all of. I believe that my 338 had in the vicinity of 1300 tracks, by 15 heads, 35spt, which the controller "translated" into something like 670 tracks, 16 heads, 51spt. This made the whole disk usable by DOS. I had no problems with any utilities, including those from Norton. Now I've got a 760mb which is 1630 tracks x 15 heads x 54 spt (or thereabouts.) MD -- -- Michael P. Deignan, President -- Small Business Systems, Inc. -- -- Domain: mpd@anomaly.sbs.com -- Box 17220, Esmond, RI 02917 -- -- UUCP: ...uunet!rayssd!anomaly!mpd -- Telebit: +1 401 455 0347 -- -- XENIX Archives: login: xxcp, password: xenix Index: ~/SOFTLIST -- -- -- Michael P. Deignan, President -- Small Business Systems, Inc. -- -- Domain: mpd@anomaly.sbs.com -- Box 17220, Esmond, RI 02917 -- -- UUCP: ...uunet!rayssd!anomaly!mpd -- Telebit: +1 401 455 0347 -- -- XENIX Archives: login: xxcp, password: xenix Index: ~/SOFTLIST --