NT5INF.CAT I do not have Service pack 4

David Bell
David Bell used Ask the Experts™
The file 'NT5INF.CAT' on Service Pack 4 CD is needed is the error that I am getting when I try to install Win2k.

Where can I get this file?

I am getting this error after the setup re-starts the computer.
 I do not have Service pack 4 CD
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JohnBusiness Consultant (Owner)
Most Valuable Expert 2012
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Look here:  https://www.catalog.update.microsoft.com/Search.aspx?q=891861  to see if you can get what you want.

Otherwise there are some third party non-Microsoft archive sites you might try.'

Google for:  windows 2000 service pack 4 from download catalogue


John. Thank you very much for your assistance in finding the service pack 4 .
Kind Regards Dave.
Dr. KlahnPrincipal Software Engineer

David, PM me if you have problems finding that media.  I have all the W2K updates and options.  The SP4 Update Rollup was the last official update kit for W2K and it came out some time after SP4 was released.  Why it was not called SP4 is a mystery.

There is also a mandatory update for the Installer which was not in the last Update kit.

Note that Windows 2000 will stab you in the back if you try to use drives larger than 128GB without installing SP4 and the Registry patch.  Do not attempt to install W2K to a drive larger than 128 GB.  Instead, install on a smaller drive, install each Update and reboot at least once after each Update installation, insert the Registry LBA patch, reboot at least once, then clone the smaller drive to the target drive.

To enable 48-bit LBA large-disk support in the registry:

1.  Start Registry Editor (Regedt32.exe).

2.  Locate and then click the following key in the registry:


3.  On the Edit menu, click Add Value, and then add the following
registry value:

Value name: EnableBigLba
Data type: REG_DWORD
Value data: 0x1

4.  Quit Registry Editor.

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Also note that Windows 2000, which still very functional for legacy application systems, lacks many security features -- particularly in the area of networking.  W2K systems should not be allowed access to the Internet and should not be allowed access to Microsoft Networking networks.
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Thank you very much for your help and information.

This is my problem.
 I have a Compaq Evo W8000 Running windows 2000 professional windows NT Workstation 4.0
For some reason it crashed and so I reinstalled windows 2000 and it worked again for a short while and then crashed again I was informed it could be the dust inside so I removed the back panel and it was full of dust so I decided to take it apart and clean it up with compressed air and a small brush and put it back together without any knowledge of what I was doing and it did not go well. First when I turned on the PC it went on loading windows 2000 and then just as it was about to enter windows 2000 it went back into setup and started loading again and then told me the file NT5INF.CAT on service pack 4 is needed then copy files from GLOBALROOT\DEVICE\CDROMO\I386 and then I discovered that the CD drive was not showing on the boot list so I cannot load up the files needed from the cd disk.
All I have to boot from is the floppy disk 3.5 or the hard drive C: or Compaq Ethernet Controller.
 Any help or information explained in layman’s terms would be much appreciated as I am not a PC Professor by any stretch of the imagination. Thank you.

NOTE:  I only use this PC windows 2000 for running Media composer Video editing.
Dr. KlahnPrincipal Software Engineer

OK ... what has happened is that when Install went back for the second of the three setup passes, the system could not see the CDROM.  This is what caused the error message.  Stabilize the system before trying again.

0.  It is impractical to load W2K from floppy media and in any case all the floppy media does is get a system in that can read from a CDROM.  The system must be got back into a state where the CDROM is usable.
1.  Confirm that the target drive is less than 128 GB in size.  This is not optional.  Things will go wrong if W2K is installed to a drive larger than 128 GB.
2.  If W2K must run on this hardware and no other, continue at step 5.
3.  Go to your local computer recycler and buy an older HP or Dell system with IDE disk and CDROM (absolutely NOT one with SATA drives) is not anywhere near as old as this one, which is about 20 years old and can be expected to have numerous problems occurring about now.
4.  Continue at step 9.
5.  Go to your local computer recycler and get a replacement power supply for the system.  While there, get two IDE CDROM drives and an IDE cable.  CD, not DVD drives.
6.  Replace the power supply.
7.  Go over the motherboard with a magnifier and look for bulging or leaking capacitors.  If you see any, replace the motherboard.
8.  Swap the CDROM(s) in the system for the replacements.  At the same time swap the IDE cable to the CDROMs.
9.  Boot a stand-alone drive tester and test the target drive for errors.
9a.  Erase the hard drive using whatever bootable drive eraser you prefer.
10.  Burn a copy of the W2K install kit to CD.
11.  Install baseline W2K.
12.  Burn a copy of Update 1 to  CD.
13.  Install Update 1.
14.  Burn a copy of Update 2 to CD.
15.  Install Update 2.
16.  Burn a copy of Update 3 to CD.
17.  Install Update 3.
18.  Burn a copy of Update 4 to CD.
19.  Install Update 4.
20.  Burn a copy of Update 4 Rollup to CD.
21.  Install Update 4 Rollup.
22.  Burn about 6 various other patches (Installer update, Jet update, NetFX, Slow Shutdown, 137 GB patch, TweakUI) to CD.
23.  Install those patches.
24.  Back up the system in this state so you have a place to stand if anything goes wrong during driver installation.
25.  Locate and load the chipset, device and video drivers ... or at least as many as you can.  If you can't find the network driver this should not be an issue, as this system should not be allowed access to the internet.
26.  At this point you can clone the small system drive to one larger than 128 GB.


Hello Dr. Klahn
Thank you very much for your help and information and most of it I understood, however, I do have a couple of things I am confused about; do you mean I should not load W2K on a hard drive bigger than 128KB? and would this be a partition on my hard drive? Also, you suggest That I buy a new power supply but the power supply is still working, why would it need replacing?
Again, thank you for your help.
Dr. KlahnPrincipal Software Engineer

That is correct.  Do not load Windows 2000 on a drive larger than 128 GB.  This is drive size, not partition size.  Windows will overwrite sections of the drive if addressed post-128 GB unless the LBA patch is installed, and installing the LBA patch should be one of the last things done.  An 40, 60, 80 or 100 GB drive would be suitable to install W2K.

I recommend replacing the power supply or recapping it because around the year 2000 there were hundreds of millions of bad capacitors in the market, most of which ended up on motherboards or in power supplies.  And since this is an elderly system, the electrolytic capacitors are probably reaching end of life -- the water bakes out of them over years of use.  It is going to be difficult to find an AT style power supply at this stage of the game, but you might get lucky and find that yours uses early ATX style connectors.  The alternative would be to open the power supply and inspect all the capacitors for signs of failure, then replace them all anyway because they're rather old.


Thank You
Kind Regards

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