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Windows XP reinstall


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#1 Altacocker

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Posted 19 June 2005 - 06:16 PM

I reinstalled XP on the C drive and naturally wiped out all the program files which I have on that drive, those I have reinstalled. I also have some programs on the D Drive which are not now recognized by Windows. Is there a way to force windows to recognize them or is reinstall the only way?

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#2 TEB

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Posted 19 June 2005 - 07:09 PM

On a default machine, d is usally the cd drive....so unless you never ever took the cd out of that drive there nothing installed there.

Or unless your hard drive is partitioned and you lettered it d:\

anyways i would go with reinstalling whatever is on d

#3 Altacocker

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Posted 19 June 2005 - 11:14 PM

The hard drive is partioned C and D

#4 TEB

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Posted 19 June 2005 - 11:36 PM

now are they not recognized by windows in a sense that they wont run when you click on the exe target? or do they not show up in add/remove

#5 Herk

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Posted 20 June 2005 - 10:01 AM

When you install programs, there are many entries put into the Windows Registry. When you install programs on a second partition and then re-install the operating system, the Windows Registry no longer has entries for those programs. You will need to re-install the programs on the second partition as well.

In the past, I used two partitions but only put data on the second partition so that it wouldn't be lost when reloading Windows.

#6 Altacocker

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Posted 20 June 2005 - 05:24 PM

Thanks guys
I will go ahead and reinstall the programs. It won't be to bad as I save all my EXE files on the D side. I just moved MY Documents there also, I lost it this time.

Herk
It all makes sence with your explination I should have thought that through myself.

#7 TEB

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Posted 20 June 2005 - 08:08 PM

When you install programs, there are many entries put into the Windows Registry. When you install programs on a second partition and then re-install the operating system, the Windows Registry no longer has entries for those programs. You will need to re-install the programs on the second partition as well.

In the past, I used two partitions but only put data on the second partition so that it wouldn't be lost when reloading Windows.


You dont need registry entries to run applications, only for a very few. Producers of games do this where if the registry key isnt there the game wont run, so by the chance the game is pirated it wont work.

Or for some apps like wintasks, c cleaner, and norton

#8 Leurgy

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Posted 21 June 2005 - 07:24 AM

When you install a program, different system .dll (dynamic link library) files are "registered". The program tells the dll's what files it needs in order to run and the dll's are assembled such a manner that they pass instructions to these files concerning when and how to run in order for the program to function.

When you reinstall an operating system, you overwrite these dll's and they now longer have the specific information required to run your program as they are in effect "unregistered". This is especially true if your program files are on a different drive.

Installing a program also writes information to the registry concerning the location and type of dll's and other system files required by your programs, so it is actually a combination of an overwritten registry and rewritten dll's and system files that cause your programs to stop running. Installing a program can cause a system file to be altered or updated and reinstalling the OS reverts the files back to their original state making them incompatiable with your program.

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