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Hello,
I'm tring to install dos 7.1 but when i type setup at the dos prompt it says checking files,done.Then nothing happens.It won't reboot with Ctrl-Alt-Del.I have to turn the computer off manually then on.I'm tring to install DOS 7.1 on top of windows xp.What is the problem.Thanks ScuzzyWuzzy.
System specs:
Advent usb mouse
Packerd bell usb keyboard
Compaq Presario MV700
Sony speakers
Logitech webcam
Lite-On dvd-rw drive
Samsung 20gb harddrive
TriGem motherboard(eMachines 270)

DOS7.1 does not exist, is it MS-DOS, LZ-DOS, CDU-DOS, PC-DOS, Datalight-DOS, DR-DOS, PTS-DOS family, Bluebird-DOS etcetcetcetc??????
Also to install MS-DOS and compatable O/Ses you do so from a Setup Floppy Disk Set or for some variants from a bootable CDROM.
FYI There is no DOS Prompt in NT6 (XP), as it has no MS-DOS SubSystem, it is CMD.exe (NT Command Prompt). Also you can not install **-DOS from within XP unless you do so within emultaor software like VirtualPC.
You need to Dual Boot:

Hi,
The right command to install MS-DOS v7.10a
(W98) is "Sys". If you use it on a system
with Win-XP already installed you'll loose
access to the later system until you repair
it... Most Virtual Machines don't fully
support peripherals and most specially the
legacy ones, if the CMOS SetUp utility will
allow it, you can add a hard-disk for the
DOS system and define it as the boot drive
when required. This way, you can avoid any
interference with the Win-XP system and yet
you'll have a "pure", "holly", "glorified"
MS-DOS v7.1 system available.¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
Salutations,Michel Samson
a/s Bicéphale

You can also install DOS 7.1 using bootpart from http://www.winimage.com/ . Set the files up. and then create a boot sector for Win9x.
The dream you dream alone is only a dream,
The dream we dream together is reality.

"You can also install DOS 7.1"
DOS7.1 is not an Official Operating System !!
As pointed out in Response1 there are various flavours.

ROM-DOS 7.1 IS official operating system :P
And even if OP ment MS-DOS - part of win9x - what is the big difference? It's a bit more difficult to install it, but it's still DOS.

Here it goes again!
I say po-tay-to, he says po-taw-to...
¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
Salutations,Michel Samson
a/s Bicéphale

DOS 7.1 is indeed an official operating system. It isn't sold as a separate retail product.
The underlying DOS in Windows 9x is variously, 7.0, 7.1 and 8.0. Programs that query things like DOSVER() will get 7.0, 7.1, 8.0 as the DOS version. The 'ver' command just prints whatever COMMAND.COM (or the command processor in place) wants to say.
It is also important to note that ye can take something like Windows 95, and replace the DOS files (%windir%\command\, and a number of DOS files in %windir%), with a later version (eg Windows 98), and it will still work: in short, Windows 95 is a bundle of DOS 7.0 and Windows 4.0, the middle 3 (95a, 98fe, 98se) are dos 7.1 and win 4.1, and ME is dos 8.0, win 4.9.
More over, it is possible, to extract the underlying DOS from Win9x, and run it as a stand-alone DOS. This is why one can make a boot disk for 'windows 9x'. You can not run Windows programs under this environment: you can run DOS programs, so it is legitimate to call it DOS 7.1.
One notes also that Weniger et al have made a General purpose MS-DOS 7,1 set out of Windows 98, and the assortment of code exists to allow one to make this out of any other version of Win9x.
The dream you dream alone is only a dream,
The dream we dream together is reality.

Long dead thread, but I can't pass this up.
IBM offered PC-DOS 7.0, 7.1, and 2000 as boxed set products. PC-DOS is the same exact code as MS-DOS (except for any changes which IBM chose to make). As of the agreement made many years ago, when "Microsoft" was a little fledgling company nobody ever heard of and got the contract from IBM to provide the Disk Operating System for the new IBM PC, Microsoft had to always provide IBM with any and all source code and development details relating to DOS. This is even still a legally binding contract, but irrevelent because Microsoft has discontinued all development work on DOS. Microsoft had to consent to this as part of the contract which allowed them to sell MS-DOS as a stand alone product. So, there was a DOS 7.1 and it is the same code as the MS-DOS 7.1 in Win98, again, except for those changes which IBM selected to make.

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