Path: utzoo!utgpu!watserv1!watmath!att!rutgers!mit-eddie!wuarchive!zaphod.mps.ohio-state.edu!van-bc!ubc-cs!alberta!myrias!aunro!ersys!davem From: ersys!davem@nro.cs.athabascau.ca Newsgroups: comp.sys.ibm.pc.hardware Subject: Re: 3.5" drive in a PC? Message-ID: Date: 17 Oct 90 19:13:53 GMT References: <40931@eerie.acsu.Buffalo.EDU> Organization: Edmonton Remote Systems, Edmonton, AB, Canada Lines: 45 trljim@ubvmsa.cc.buffalo.edu (James Sonnenmeier) writes: > I have a 720K 3.5" drive I want to install in an origional PC. It had two > 5.25" drives so I simply replaced one with the 3.5" drive ( I assumed > then the mother board switches were set already for 2 drives etc ... ) > but the machine thinks the 720K drive is still a 360K drive! ... Like I > said this is an origional PC ( circa 1983) if I replace the disk controller > with a more modern piece will that let me use the drive as 720K?? ( It > can *read* a 720K disk but cannot format a new disk ... that is it thinks > its 360K) > Anyone have any ideas?? Thanks There are numerous klutzy solutions to this one and one that is downright simple. Following is a little uuencoded utility called SET80.COM. Call it out of your autoexec.bat file and your system will then know that your B: drive is a 3.5" 80 tracker for formatting and other purposes. The program was written by a friend of mine, Villy Madsen. Source code (.asm) is available on request. ------------------------cut here----------------------------- begin 644 SET80.COM MG%56C,V#Q1"-M@4`5KXA`%;+345-3U)9)`(`/@D``0```@8```("```"!P`` M`@,```((```"!````@D```(%```"M$2P#;,"M0BQ0`X?N@,`S2&T3,TA[.M- MD`0```!0``(``@(!``)P`*`%_0,`"0!742ZC'@'\H0(`*\6,UXS>._?K"8O$ M+>4`L033Z#TH`',1N`A,S2$>*\!0NA(!M`G-(O@@`#A^.Q2O_N1D`\Z0? M+@$N(P$N`2X6`9"0D)"0D)"0D(V&&`".Q5E?7EV=CM"\``&<4U%25E=5'AZ, MQ;D``.,?OB$`#A^LBN`JP`/%CL"M`\67K9,P"T`"([`T>9R!XS8 M+0`(CMCYT=[YT=^LT.AS`XKHK(K(T?ES!+``\ZKSI'7.!Q]=7UY:65N=N``` -CM"\``"X-!+J```````` ` end ------------------------cut here----------------------------- Dave McCrady | ersys!davem@nro.cs.athabascau.ca Edmonton Remote Systems | 13324-138 Street | BBS: (403)-454-6093 300-9600 bps (HST) Edmonton, AB Canada T5L 2B4 | USENET (403) 452-3254 300-2400 bps