AIL0@NS.CC.LEHIGH.EDU (Arthur I. Larky) (04/23/91)
Some versions (or maybe all versions) of Zenith MSDOS write the date and time someplace in the system every time you write a file. If you have a system without a real-time clock, you can prove this by not setting date and time when you boot up. It will be set to the time of the last file write. This does, of course, upset all kinds of virus-hunting programs. (I have, on occasion, taken advantage of this property of my Zenith 158). Art Larky Professor, CSEE Dept Lehigh University
padgett%tccslr.dnet@uvs1.orl.mmc.com (A. Padgett Peterson) (04/24/91)
>From: AIL0@NS.CC.LEHIGH.EDU (Arthur I. Larky) >Some versions (or maybe all versions) of Zenith MSDOS write the date >and time someplace in the system every time you write a file. Think this is only on models 158 & 159. ATs do not seem to exhibit this. Have seen it with ZDOS 3.0-3.3 - writes to the C drive boot record (not the MBR). Different locations with each OS. Possible that if you zero the locations in the boot record (just the ones it writes) it might stop writing but cannot confirm this.
sharp@mizar.usc.edu (Malcolm Sharp) (04/25/91)
Add Zenith models 150/151 to that list. SCANs of diskettes that are known to be infected with Stoned have not been detected on these machines. However, F-PROT picks them up. We have a 151 that recently had its hard drive trashed due to Stoned. Had been using VSHIELD and SCAN (first ver64, then 76, 76C). ???