memory requirements for Avast 4 DOS?

Avast Free Antivirus / Premium Security
1

Hi all,

We are evaluating Avast for Dos at the moment but we keep running into XMS memory problems when trying to run to lastest download for Dos…

Installing the software is ok, even running the L-guard program is ok, but our attempts to install the Resident-Guard fail, after reading 30% of the data file the program aborts with following message: Not enough XMS memory to read data!!

Can this software run on machines with as little as 32Mb or 64Mb of ram ( huge amounts back in the dos days ;-)??

More trouble add’s up: re-installing the software keeps returning ‘invalid registration key’ even with the latest download from Avast…

shall we forgive and forget this 4 dos product???

2

Check the settings in autoexec.bat and config.sys. You only need to free up more xms.

3

Are you running lguard.exe from DOS, or rather from Windows?
If it’s from Windows, you have to modify the memory settings for the program (give it as much XMS memory as possible).

4

Thank you for your time guys!

eddy > should have done this immediatly, my config.sys looks like this at the moment:

DEVICE=A:\HIMEM.SYS /TESTMEM:OFF
DEVICE=A:\EMM386.EXE 512 X=D000-D400 RAM
DOS=HIGH,UMB
DEVICE=C:\DOS\DISPLAY.SYS CON=(EGA,850,1)
FILES=30
BUFFERS=20,8
INSTALL=C:\DOS\KEYB.COM BE,850,C:\DOS\KEYBOARD.SYS
BREAK=OFF
SHELL=C:\COMMAND.COM /E:200 /P

the question was: how much memory does Avast 4 Dos needs?

igor > i’m running straight from Dos 6.20, no windows installed, Lguard is running ok, the memory resident Rguard however crashes saying ‘not enough’ memory…
The size of the virus database is about 3Mb, is the Rguard attempting to read all this data into memory :o ?

5

Hmm very unusual. You are loading from both floppy as well as from the harddisk. Any special reason for this?

6

Not so unusual in the Dos days i believe…

messing with autoexec.bat and config.sys can lock you out of your system… so i put the experimental ones on a bootable floppy… if something does go wrong i just have to reboot without it.

Did anyone succeed in running the Rguard in DOS? What version was that and how much memory was installed?

I could’nt find the minimal system requirements on www.avast.com

7

Today i downloaded the reduced aka ‘in the wild’ virus database ( lg-itw.zip) which size is approximately 1Mb ( the full database totals more than 3Mb).

Loading this db seems to work fine ( no ‘not enough XMS memory’), but after displaying some messages like:
‘Resident part of program installed’
‘Boot sector scanning installed and activated’
‘Scanning of executed programs installed and actived’
‘32-bit disk access for Windows is allowed’

then the system locks up, cursor blinks but no reaction, i have to make a cold boot to regain access…

8

Avander,

I got exactly the same problem…
I Have 256 ram on a pentium mmx running dos 6.22 an win 3.11

I get a workaround disabling the boot scan ie not using the /B option and as you did using the reduced aka ‘in the wild’ virus database.
for example
RGUARD /3- /E
works on my pc
the bad news is win 3.11 doesn’t start

I think it is a bug on rguard managing big “vps”