Article View: comp.sys.ibm.pc.misc
Article #11569Re: Disappearing UMB's, get this.
From: Erik van Linstee
Date: Tue, 05 Jan 1993 10:51
Date: Tue, 05 Jan 1993 10:51
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2938 bytes
joet@dcatlas.dot.gov (Joe Trott) writes: >linstee@dutecaj.et.tudelft.nl (Erik van Linstee) writes: >>The funniest thing happened to me. Yesterday, when I booted my >>dos partition, I noticed I had no UMB's. I was rather surprised, >>since I hadn't changed anything since I last used dos. >>And behold, the himem.sys and emm386.exe settings were still >>ok, yet, from the dos prompt (4dos or command.com) I could not >>see any UMB's, emm386 repports 0 bytes available/free UMB >>but a correct UMB start segment (C800), SI repports no UMB server >>present, BUT the drivers in DEVICEHIGH's were loaded high and >>functioning!!! >Are you sure they were up high? Yes. mem/c doesn't show them, the memory isn't missing from the base 640k, but yet they work, so they are loaded. >>How's that for a mysterie. Has my processor maybe gone off DOS >>after having been running OS/2 for a while now :-) ? >>I reinstalled DOS, reformatted c: disected config.sys, and what >>else. No indication of failure. OS/2 runs fine, checkit confirms >>the system board to be ok, yet, NO UMB's. >>My suspicion is rather arroused though, by the fact that SI, >>repports different memory sizes in the various info screens. >>It finds 638 to be useable by DOS, yet 640 to be available. >Sounds like some of your BIOS settings may have been changed, such as the ones >for shadow RAM. How much RAM is in your system? 17Mb, and the BIOS settings are ok. I pulled out the original dos disks yesterday, and that confirmed the fact that it must be a virus. I have no idea where it came from and a virus scan did not reveal a thing. It's pretty persistent though. I tried putting back my original setup piece by piece and when I finally got to 4dos, it broke again. Doing a sys c: from the original disks doesn't solve it, only reformatting did. It seems to infect more than just the command shell. >-JTT >Good .sig, by the way. Crazy, isn't it? We invent a God, and then pretend >he/she/it invented us. >I guess there are those who never outgrow the need for a "Father" figure, >who will surely make everything all right somehow, someday, somewhere... Over the rainbow... Yes, my thoughts exactly, except so many intelligent people seem to disagree. One thing I will never understand I guess. Erik
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Path: arc1-ca.pugleaf.net!sparky!uunet!pipex!bnr.co.uk!uknet!mcsun!sun4nl!dutrun!donau!dutecaj.et.tudelft.nl!linstee From: linstee@dutecaj.et.tudelft.nl (Erik van Linstee) Newsgroups: comp.sys.ibm.pc.misc Subject: Re: Disappearing UMB's, get this. Message-ID: <1993Jan05.105121.3321@donau.et.tudelft.nl> Date: 5 Jan 93 10:51:21 GMT References: <1993Jan01.181352.6500@donau.et.tudelft.nl> <1993Jan4.173117.14082@dcatlas.dot.gov> Sender: news@donau.et.tudelft.nl (UseNet News System) Organization: Delft University of Technology, Dept. of Electrical Engineering Lines: 54 Nntp-Posting-Host: dutecaj.et.tudelft.nl