Xref: utzoo comp.sys.att:12056 comp.os.msdos.programmer:4236 comp.unix.internals:2425 comp.unix.sysv386:6332 Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!uwm.edu!linac!att!pacbell.com!tandem!netcom!resnicks From: resnicks@netcom.COM (Steve Resnick) Newsgroups: comp.sys.att,comp.os.msdos.programmer,comp.unix.internals,comp.unix.sysv386 Subject: Re: Dos and unix on same Disk Message-ID: <1991Mar25.204842.9888@netcom.COM> Date: 25 Mar 91 20:48:42 GMT References: <13719@ccncsu.ColoState.EDU> <1991Mar25.164947.10980@cbnewsd.att.com> Organization: Netcom - Online Communication Services UNIX System {408 241-9760 guest} Lines: 51 In article <1991Mar25.164947.10980@cbnewsd.att.com> bamford@cbnewsd.att.com (harold.e.bamford) writes: >In article <13719@ccncsu.ColoState.EDU> justicec@handel.cs.colostate.edu (Christopher Justice) writes: >>I'm having a problem installing both AT+T System V R3.2.2 and Dos 4.0 on the >>same disk drive. I partioned the drive (330 meg) into an 80 meg Dos >>partition and the rest for unix. They installed succesfully, but Dos gives >>me a "General failure reading drive C:" when I try to run programs. This >>happens irregularly. Unix has given me a couple of "unrequested harddrive >>interrupt errors". >> >>Our computer Vendor is trying to tell us that you can not install unix >>and dos on the same drive, or possibly that dos can not take up more than >>9% of the drive. I find this hard to believe. If Dos and unix are on >>different partitions, it shouldn't matter. >> >>Is using Dos and unix on the same drive common? Can you do this? I'd like >>to hear about your experience with doing this. > >We have both DOS (3.2) and unix (SVR2) on the same disk in our >6386. One problem we had was that DOS doesn't like partitions over >about 32 Meg. Your vendor says you should have no more than 9% of >your 330 Meg drive. That's 29.7 Meg. Perhaps this is your >problem. You CAN have multiple DOS partitions, however... Also, >we found that the DOS partition had to be the first TRACKS on the >disk and that unix had to have the first partition NUMBER on the >disk. This was probably just a local anomoly, but after two weeks >of screwing around, we finally got both unix and DOS running on the >same disk. > >Good luck. > >-- Harold Bamford > >#include I can see the problem with DOS 3.2 - DOS 3.2 didn't have an extended partition. I have had successfully, DOS 3.3 and DOS 4.01 on the same disk as Esix Sys V3.2 I was running with a Priam ID768 330 Meg ESDI drive on a Micronics/Wietek 386/20. What kind of drive and controller are you using? Are you using a "proprietary" partition. (eg Disk Mangler, Ontrack, Speed Stor, etc)? - Steve -- ------------------------------------------------------------------------------- resnicks@netcom.com, steve@camphq, IFNA: 1:143/105.0, USNail: 530 Lawrence Expressway, Suite 374 Sunnyvale, Ca 94086 - In real life: Steve Resnick. Flames, grammar and spelling errors >/dev/null 0x2b |~ 0x2b, THAT is the question. The Asylum OS/2 BBS - (408)263-8017 12/2400,8,1 - Running Maximus CBCS 1.2 -------------------------------------------------------------------------------