Solved defrag.exe for dos99 ?

February 15, 2015 at 00:01:47
Specs: dos from win98se
hi,

trying to find, for free download, a dos defrag.exe that will work in the dos that underlies win98se, aka win99. it reports [ver] 4.00.2222 .

download url, please ?

thanks,
sun am 15 feb 2015

edited by moderator: Removed e-mail address


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✔ Best Answer
February 15, 2015 at 20:23:21
It's probably not a good idea to run defrag on a 98 system from pure dos. Windows doesn't let defrag move certain files but if you run it from dos that move restriction may not hold and you could end up with a non-working 98 system.

That said, the 'invalid dos version' can be fixed by adding defrag to setver. For example to add the dos 6.22 version to setver you'd type setver defrag.exe 6.22. Then make sure setver.exe is loading in config.sys. HOWEVER, defrag from pre-windows dos will only run on fat16 partitions. So if 98 is installed on a fat32 partition--which it usually is--those defrag won't run. Also, I'm not sure how defrag from dos will treat long file names even if they're on a fat16 partition. (Early on I kept a 98 installation on a fat16 partition just so I could run some of the old dos utilities. Seems like I did defrag it once and ended up will all the file names shortened to 8.3 format.)

Another option is Norton Disk Doctor (NDD) from Norton Utilities for dos. But as far as I know all those versions were limited to fat16 also.

There must be some third party defragging software that will work with fat32. I googled defrag "fat32" dos and got quite a few hits. Here's one:

http://www.bttr-software.de/forum/b...

There's also this computing.net thread from 2008 where I mentioned there was a defrag program in NTFS4DOS:

http://www.computing.net/answers/do...

Also there may be a version from DR Dos (Digital Research's version of dos) that might be fat32 capable.



#1
February 15, 2015 at 01:13:35
Defrag is built in to Microsoft DOS. Boot into DOS and execute the defrag command:
http://www.computerhope.com/defrag.htm

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#2
February 15, 2015 at 05:18:26
thanks, but the defrag.exe file is not included in any of the downloadable dos99 boot disks that i've found. the defrag.exe files that i have found, when run from the dos prompt, respond either 'wrong version of dos', or 'must be run in a windows environment'
am paraphrasing]. thanks for your prompt input, tho.

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#3
February 15, 2015 at 06:55:22
Defrag is not part of a Windows boot disk. You need to install Windows (or MS-DOS) 1st, them run defrag from within Windows or from a DOS prompt.

forgot the link: http://www.allbootdisks.com/disk_co...

And there is no Windows 99 or DOS 99. Version 4.10.2222 is Windows 98SE & it runs on top of MS-DOS 7.10.

http://www.gaijin.at/en/lstwinver.php

http://www.mdgx.com/newtip98.htm

message edited by riider


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Related Solutions

#4
February 15, 2015 at 20:23:21
✔ Best Answer
It's probably not a good idea to run defrag on a 98 system from pure dos. Windows doesn't let defrag move certain files but if you run it from dos that move restriction may not hold and you could end up with a non-working 98 system.

That said, the 'invalid dos version' can be fixed by adding defrag to setver. For example to add the dos 6.22 version to setver you'd type setver defrag.exe 6.22. Then make sure setver.exe is loading in config.sys. HOWEVER, defrag from pre-windows dos will only run on fat16 partitions. So if 98 is installed on a fat32 partition--which it usually is--those defrag won't run. Also, I'm not sure how defrag from dos will treat long file names even if they're on a fat16 partition. (Early on I kept a 98 installation on a fat16 partition just so I could run some of the old dos utilities. Seems like I did defrag it once and ended up will all the file names shortened to 8.3 format.)

Another option is Norton Disk Doctor (NDD) from Norton Utilities for dos. But as far as I know all those versions were limited to fat16 also.

There must be some third party defragging software that will work with fat32. I googled defrag "fat32" dos and got quite a few hits. Here's one:

http://www.bttr-software.de/forum/b...

There's also this computing.net thread from 2008 where I mentioned there was a defrag program in NTFS4DOS:

http://www.computing.net/answers/do...

Also there may be a version from DR Dos (Digital Research's version of dos) that might be fat32 capable.


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#5
February 16, 2015 at 01:48:38
DAVEINCAPS,

thank you for your informative, thoughtful, and non-pedantic reply.

message edited by dllund


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#6
February 16, 2015 at 19:04:39
You're welcome. If you do find one you may want to do some experimenting with it on a drive whose contents are not important, just to make sure.

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