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is it possible to boot first into dos


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#1 flyhigh427

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Posted 26 November 2009 - 06:13 PM

and run a bat file delete two files of nfts hard drive
then load windows every time i boot?
i mean will dos be able to read nfts files ?
thanks

#2 was_jaclaz

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Posted 26 November 2009 - 06:19 PM

and run a bat file delete two files of nfts hard drive
then load windows every time i boot?
i mean will dos be able to read nfts files ?
thanks

Not by default.
And definitely it won't be able to write on it.

There is only a driver that allows this AFAIK, called NTFS4DOS:
http://www.free-av.c...s_personal.html
plus a couple of Commercial ones.

But this may not be the best solution.

Why don't you try explaining with some details the problem you want to solve (as opposed to the way you think it should be solved)?
There may be other ways.
Which files?
Where are they located in the filesystem?
How big are they?
Are they always the same files?

jaclaz

#3 flyhigh427

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Posted 26 November 2009 - 06:27 PM

hi in windows vista the two files are called memory.dmp and user.dmp
these files hold password info that deleteing them would help in system protectsion

#4 was_jaclaz

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Posted 26 November 2009 - 08:12 PM

hi in windows vista the two files are called memory.dmp and user.dmp
these files hold password info that deleteing them would help in system protectsion

Are you sure of what you wrote? :)

AFAIK those two files are memory dumps coming off a CRASH, not at all a security treat.

Have you got any reference about these files containing passwords or however sensible data? :thumbup:

However, from a security viewpoint it is rather pointless to "leave them": if the sytem is booted not through your elaborate DOS way, the files won't be deleted.

If you "insist" on wanting to delete them, you should delete them when you switch the PC off.

Alternatively you could program a delete on next reboot.

Both the latter can be done within the NT (Vista) system.

Search for Group Policy editor or gpedit.msc.

Get this:
http://www.microsoft...;displaylang=en

And find how to schedule an action at logoff/shutdown or next reboot, or simply use movefile (and yes it can also delete files :thumbup:):
http://technet.micro...556(en-us).aspx

:rofl:

jaclaz

#5 flyhigh427

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Posted 27 November 2009 - 02:45 PM

thanks jaclaz
i read all about windows vista and the sam files and it says u could delete pagefile at power down and delete both the memory.dmp and user.dmp before logging in :rolleyes:http://technet.microsoft.com/en-us/library/cc723740.aspx

#6 was_jaclaz

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Posted 27 November 2009 - 05:41 PM

Well, that article dates back to Windows NT 4.00.

In the meantime several differents way of recovering a password from the SAM file have been developed.

I mean, why searching for a "maybe" password inside a large .dmp file (if any of these file exist at all ) or in a "huge" pagefile.sys one when you can access the SAM (where you know for sure the password is stored and where it is)? :)

Of course I am talking of a "local" intruder, but cannot say/don't know about "remote" kind of accesses. :)

jaclaz

#7 wendy

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Posted 28 November 2009 - 07:47 AM

You can load Windows NT from DOS via dos2win.com, which can load the Bootmgr from DOS. You should realise that DOS can not see ntfs partitions, and this particular program is not compatible with himem.sys. Still, it is indeed possible to boot DOS, and then boot Vista, or indeed, XP (with dos2wxp.com).

http://www.multiboot.ru/files.htm




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