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Any way to get real-mode DOS?

scott_davis
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Last Modified: 2010-04-13
I have a BIOS update disk that requires REAL DOS to execute.  I no longer have any DOS or Windows 9X disks lying around to create a DOS boot disk.  Is there anything I can do to bring up W2K in REAL MODE DOS?  Is there any utility on the CDROM that can help?
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Commented:
Not under Windows 2000.  Real mode simply does not exist.

You'll need to get a DOS or Win9x boot disk.  There are many available from www.bootdisk.com.  One of those should get you going.
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Commented:
Scott, this will help you.

Dennis

http://www.dewassoc.com/download/Win98boot.zip

Author

Commented:
I think what I am getting at here is to know if there is any way to get a real mode DOS prompt if I am running WIndows 2000.  Thanks for the image Dennis...
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Commented:
Scott, the short answer is no, that is unless you create a dual-boot system that will allow booting to a DOS partition. However, if your intent on flashing the BIOS, I wouldn't want to use anything but a pure dos boot disk, which cannot be made in Windows 2000. Most flash BIOS programs will terminate in any other environment.
Just to confirm...

Real Mode DOS does not exist in Win2000, because Win2000 is not based on DOS itself, unlike 95/98/ME

2000 is based on (and is an upgrade to} NT, which is a completely different operating system, with different kernel structure, core files etc....

Dos exists in 2000 as an aid to 2000, because of it's familiarity, power, and ease of use as opposed to being the heart and base code of the os as it is in 95/98/me

Hope that explains it, and Incidently I concur with the suggestion of www.bootdisk.com, it a very good site.

Good luck....

Dave

Commented:
alternatively, you get go to any pc which has a win98 or win95 os. Place in a floppy disk and type sys a: .This will attempt to copy all require system file in order to make the floppy disk bootable.

Commented:
You can make a DOS-boot disk in W2k: on the CD run makedisk.bat in \VALUEADD\3RDPARTY\CA_ANTIV. For pure DOS delete all files except command.com, msdos.sys and io.sys (and maybe dblspace.bin).
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Commented:
schmiegu, that wouldn't be a pure dos disk though.

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Commented:
Again, my point is this:
You're in the middle of nowhere and you have a computer with Windows 2000 PRO installed and the Windows 2000 PRO CD.  You need to flash the BIOS.  You have no Internet access or access to any other machines running 9X.  What do you do?
I should accept schmiegu's answer because it will work, however, I notice that the \VALUEADD\3RDPARTY\CA_ANTIV folder does not exist on the XP PRO CD, and I would like a solution that applies to XP as well.
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Commented:
Well Scott, sometimes what we want is not always possible. If you believe that schmiegu's disk will create the pure dos environment necessary for a BIOS flash, give it a try and see how it works. BRW, make sure you have a recovery disk handy though.

Author

Commented:
If you say schmiegu's answer will not work, I accept that at face value, however, his(?) answer was in the vein I was looking for.  I am looking for some hidden way in Windows 2000/XP to bring up REAL MODE DOS, either through a utility on the CD or installed executable on the hard drive.  You'd think MS could at least include something on the CD to do this just for emergency situations.
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Commented:
Scott, if you think about your statement, "You're in the middle of nowhere and you have a computer with Windows 2000 PRO installed and the Windows 2000 PRO CD.  You need to flash the BIOS.  You have no Internet access or access to any other machines running 9X.  What do you do?", how would you get the BIOS update in the first place? BIOS updates need to be on a bootable disk. If you're in the middle of nowhere, how would you get it?

Author

Commented:
How about this Dennis...why don't you just step out of this conversation now and let people who see the merit of this question answer it rather than picking what I said apart.   Frankly, you disturb me with all the trolling you do here, so do me a favor and put me on your DO NOT ANSWER list, we'll both be better off that way.  And please, don't respond to this comment either.

For everyone else...let me restate more precisisely and with some modifications.

Situation (real world):

You are at your aunt's house who has a home computer with W2K installed.  Her system ONLY has a CDROM - no floppy (it is a laptop).  She does have internet access through which you've downloaded AWDFSH71.EXE and BIOS.BIN to update her BIOS because these files are needed to fix a problem with power management she has been having.  You are leaving tomorrow and want to find someway to get the flash done but are stumped because you find no way to boot to DOS.  There are no near neighbors and no other computers in practical reach.  What can you to get the BIOS flashed?
ok, lets all calm down..

scott_davis - In my experience and knowledge, it is impossible to boot to dos unless you have dos on either the machine itself, or a floppy.

Since you have neither.  Your're stuffed.

I emphasise again, REAL Mode dos does not exist in win2k as it's not a DOS Based o/s.

Incidentally, a bit harsh on Dew_associates I think, bear in mind he's only trying to help...

Hope this helps...



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Commented:
Dave Smith, thanks!


Well Scottie, given that you supposedly have a BA in computer science, I would have expected a more professional attitude than that which you have displayed above.

As for the trolling, as you refer to it, I do that to help as many people as reasonably possibly given my own time constraints. Obviously something foreign to you.

Lastly, I don't care who's laptop it is, you cannot flash a BIOS binary file in anything but basic DOS, something someone with supposed 15 years of experience should already know.

Have a nice day!

Author

Commented:
Now that Mr. Self-Rightous has had his say, which although stated politely, still amounts to a flame, anyone else know of a secret way to get a REAL MODE DOS prompt out of W2K?

Thank you David.  I am aware that W2K is not based on any DOS, alias 16bit, foundation, for boot or otherwise.  But that doesn't preclude the existence of some buried IO.SYS and COMMAND.COM that one could use if they were included as utility programs.
Commented:
If there is a laptop without floopy drive, you have tzhis option, if you have another PC with floppy drive and CD writer: create the floppy like I told you and then create a bootable CD from it, else you have no chance to flash the BIOS. Pure DOS boot disks (without any memory manager) are the only way to flash a BIOS.

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Commented:
Thanks.  This I have done in the past sucessfully using Nero, however, in this case, this option is not available as no other PC is around.  What I was really hoping was that buried somewhere, unbeknownst to most people, is a obscure way to get to DOS from W2K/XP, or by using a utility on the CD (which, after looking, does not seem to turn up anything other than the antivirus tool you mentioned).  If no one else has any secret info on this then I'll go ahead and award you the points later this week because your answers were very insightful.
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Commented:
True professionalism from the questioner and the expert <scoff>.

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