Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!asuvax!noao!ncar!boulder!seri!wind55!marshall From: marshall@wind55.seri.gov (Marshall L. Buhl) Newsgroups: comp.os.msdos.misc Subject: Re: MS-DOS 4.01 vs. 3.3 (now SHARE) Message-ID: Date: 23 Aug 90 16:31:39 GMT References: <38144@shemp.CS.UCLA.EDU> <2943.26d077ac@cc.helsinki.fi> <1990Aug21.164046.19087@lotus.com> <2209@cernvax.UUCP> <870@vall.dsv.su.se> Sender: news@seri.gov (news) Organization: Solar Energy Research Institute Lines: 32 mk@vall.dsv.su.se (Magnus Karlson) writes: >What happens if you set FCBS to 0 in config.sys? I don't use a 4.xx system >my self so i don't know, but at least logicaly it should make old fcb programs >fail. My DOS 4.01 manual says that the allowable range for FCBs is 1-255, so I guess this won't work. Haven't tried it though. Given that I know very little about the internal workings of DOS, my understanding was that the problem is with DOS 1.x FCB calls. I assume DOS 4 uses DOS 4.x FCB calls now, so you really couldn't set the number of FCBs to zero. Of course this is pure speculation about something that I know very little about. Any experts out there to help us out? Does DOS 4.x not use FCBs? Is that how they got around the 32MB limit? >I have 1 document about PC-Dos 4.00 from when it was new that says >"a fcb call to disk larger than 32MB will fail if share is not loaded" >though it doesn't say in what way it will fail... I heard that it could trash your disk, but I've never had it verified by an independent source. Laying my ignorance out on the table... Marshall -- Marshall L. Buhl, Jr. EMAIL: marshall@seri.gov Senior Computer Missionary VOICE: (303)231-1014 Wind Research Branch 1617 Cole Blvd., Golden, CO 80401-3393 Solar Energy Research Institute Solar - safe energy for a healthy future