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Unix and NT also have this technology. I think you're confusing Virtual Machine with Virtual Memory. Every process within NT and Unix load into memory and believe they are the only process on the machine. If they attempt to perform an illegal call to the OS or execute a "protected" instruction, they are shut down and the OS survives.

Today's virus aren't executing illegal instructions or attempting to overwrite protected memory -- as would an errant task that a virtual memory system prohibits. They are leveraging flaws in the OS' API that either permit the operation even though it should be restricted or overflow the buffer of an API call thereby overwriting a portion of the API's program with a "payload". This payload then gives them access to the protected inner rings of the OS and they can then perform operations as root or admin. This access allows them to destroy the machine or, more typically, install a remote control back door for later.

You are correct about the mainframe statement. It has offered both OS and memory virtualization. It's been a long, long time since I've been on a mainframe but they used virtualize many copies of MVS/TSO and they called them guests. You could also log into a product called VM but I was never certain about the relationship of VM and MVS/TSO. I know that I used to use an e-mail product called PROFS (Professional Office System???) in VM but all of our business work was performed in MVS.
Posted by: robradina@...   Posted on: 04/03/06 You are currently: a Guest | Members login | Terms of Use
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Download  eholme | 04/03/06
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April Fools?  Whyaylooh | 04/03/06
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Run Linux under Windoze  Roger Ramjet | 04/03/06
"Look, Marlin! A yummy worm."  The King's Servant | 04/03/06
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Seriously looking into virtualization.  Mr. Roboto | 04/03/06
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OS/2 has had this technology for years.  The King's Servant | 04/03/06
What?  robradina@... | 04/03/06
What version(s) of NT are you running?  Still Lynn | 04/03/06
give up.  xuniL_z | 04/04/06
VM on IBM mainframes  Colonel Panijk | 04/03/06
AS/400 had this for at least 10 years  pkr@... | 04/04/06
Microsoft didn't copy VMWare  robradina@... | 04/03/06
Once again  xuniL_z | 04/03/06
"Windows ain't done,, 'till Lotus won't run" (NT)  Update victim | 04/03/06
Or Linux  Boot_Agnostic | 04/03/06
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8 for this Mike!  crocd | 04/03/06
When the "sandbox" contains kitty litter...  Anton Philidor | 04/03/06
Anton!  Linux User 147560 | 04/03/06
Good to see you LU.  Anton Philidor | 04/03/06
From where I stand and see things  Linux User 147560 | 04/03/06
If you're right...  Anton Philidor | 04/04/06
Anton,  nomorems | 04/03/06
absorbing----- "Assimilate or be destroyed"  Sysop1984 | 04/03/06
the amoeba strategy  uk_forum@... | 05/26/07
Who says their customer base is asking for it?  John Zern | 04/03/06
Good, but not as good as Mike Cox  Still Lynn | 04/03/06
Novell and SGI are your examples...  Anton Philidor | 04/03/06
Nope! Read it again!  Still Lynn | 04/03/06
I read what you wrote.  Anton Philidor | 04/03/06
Is your only measure of successful software money?  mdsmedia | 04/03/06
Lost in the trees  Still Lynn | 04/04/06
RE: Who says their customer base is asking for it?  Linux User 147560 | 04/03/06
Or..  nomorems | 04/03/06
I always knew you were the alter ego to Mike Cox:  Judas I. | 04/03/06
"Linux running a virtual Windows"  Anton Philidor | 04/03/06
Huh? "Promising action to counter."  Judas I. | 04/03/06
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More than 7 Anton...  Linux User 147560 | 04/03/06
Seven Levels of Indentation  D. T. Schmitz | 04/03/06
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No, Anton, that's 7:1...a ratio  mdsmedia | 04/03/06
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Look a Scarecrow!  Still Lynn | 04/03/06
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Popularity vs. "mundanity", then productivity  Still Lynn | 04/03/06
Mundane Becomes Insane owing to Security  mighetto | 04/03/06
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The Danger is Real...  nomorems | 04/03/06
You got that right.  xuniL_z | 04/03/06
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bug-free linux apps?  archerjoe | 04/03/06
Sorry you missed...  Linux User 147560 | 04/03/06
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Hmmm  Linux User 147560 | 04/03/06
April fools  uk_forum@... | 05/26/07
Here's the Link  sfmartin | 04/03/06
April Fools?  mighetto | 04/03/06
hmmmm  Shelendrea | 04/03/06
Linux on Windoze, or Windoze on Linux  IT Makes Sense | 04/03/06
What is Widoze? Never heard of it.  No_Ax_to_Grind | 04/03/06
You must not use Windows much..  nomorems | 04/03/06
slang.  xuniL_z | 04/03/06
Win on Lin Security Issues  mighetto | 04/03/06
Virtualization, this quarters buzz word...  No_Ax_to_Grind | 04/03/06
Server swaps  douglasids | 04/03/06
Right douglasids  Richard Flude | 04/03/06
Re:Virtualization, this quarters buzz word...  pdrace | 04/03/06
completely useless  uk_forum@... | 05/26/07
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