Promise Win9x-ME Promise Ultra100 (tm) IDE Controller (PDC20265) Driver Download

Promise Drivers

The Promise Ultra100 (tm) IDE (PDC20265) is a disk drive controller manufactured by Promise. This driver fixes problems with drive not found, slow or unreliable data transfer, intermittent connection or hardware conflicts. This update - "" - has an average rating of 3 out of 5 stars based on 8 reviews, and has been downloaded 139 times. It is compatible with PCs running Windows Vista and Windows XP, among other operating systems. The total disk space used for this update is 221.8 KB.

8 Ratings

Supported Models

Maxtor ATA100 PCI

Win2000 Promise Ultra100 (tm) IDE Controller

Win2000 Promise Ultra100 (tm) IDE Controller (PDC20265)

Win2000 Promise Ultra100 TX2 (tm) IDE Controller

Win2000 Promise Ultra133 TX2 (tm) IDE Controller

Win9x-ME Promise Ultra100 (tm) IDE Controller

Win9x-ME Promise Ultra100 (tm) IDE Controller (PDC20265)

Win9x-ME Promise Ultra100 TX2 (tm) IDE Controller



Supported Operating Systems

Windows Vista, Windows Vista (64 bit), Windows 2003, Windows XP, Windows 2000, Windows NT4, Windows ME, Windows 98SE, Windows 98, Windows 95

File Name


may 13 2006 (13-May-2006)

Additional Notes

This zip file contains the driver for the MAXTOR version of the PROMISE chip ATA 100 PCI controller card. May work on the 133. Also contains the FLASH upgrade, the HOW_TO files on how to set up and flash. I find these cards in older, discarded computers for " ". Good luck. RObin

Uploaded By

robin graves (DG Member) on 7-Mar-2010

Driver Contents File List

The following files are found inside the driver download file.

Name Size Date
DRIVER INSTALL.txt 1.9 KB 13 May 2006
MAXTOR PCI 100 FLASH/WHAT and HOW.txt 3.9 KB 13 May 2006
MAXTOR PCI 100 FLASH/u100b43.exe 63.5 KB 13 May 2006
MAXTOR PCI 100 FLASH/u100b43.exe/267b43.bin 16.4 KB 9 Oct 2001
MAXTOR PCI 100 FLASH/u100b43.exe/PTIFLASH.EXE 63.1 KB 17 Jul 2001
NOTE on New DRIVER.txt 1.3 KB 13 May 2006
atadrvr.exe 187.4 KB 13 May 2006
atadrvr.exe/ULTRA 7 bytes 9 Oct 2002
atadrvr.exe/nt4/ULTRA.CAT 7 bytes 9 Oct 2002
atadrvr.exe/nt4/ulcoins.dll 20.5 KB 9 Oct 2002
atadrvr.exe/nt4/ultra.inf 9.2 KB 21 Nov 2002
atadrvr.exe/nt4/ultra.sys 41.6 KB 9 Oct 2002
atadrvr.exe/readme.txt 2.6 KB 5 Dec 2002
atadrvr.exe/txtsetup.oem 4.0 KB 9 Oct 2002
atadrvr.exe/win2000/ULTRA.CAT 8.1 KB 22 Nov 2002
atadrvr.exe/win2000/ulcoins.dll 20.5 KB 9 Oct 2002
atadrvr.exe/win2000/ultra.inf 8.6 KB 21 Nov 2002
atadrvr.exe/win2000/ultra.sys 36.1 KB 9 Oct 2002
atadrvr.exe/win9x-me/PTISTP.DLL 36.9 KB 9 Oct 2002
atadrvr.exe/win9x-me/PU66VSD.VXD 8.7 KB 9 Oct 2002
atadrvr.exe/win9x-me/SMARTVSD.VXD 9.1 KB 9 Oct 2002
atadrvr.exe/win9x-me/ULTRA.CAT 8.9 KB 22 Nov 2002
atadrvr.exe/win9x-me/ulcoins.dll 20.5 KB 9 Oct 2002
atadrvr.exe/win9x-me/ultra.inf 10.9 KB 21 Nov 2002
atadrvr.exe/win9x-me/ultra.mpd 41.1 KB 9 Oct 2002
atadrvr.exe/winxp/ULTRA.CAT 8.1 KB 22 Nov 2002
atadrvr.exe/winxp/ulcoins.dll 20.5 KB 9 Oct 2002
atadrvr.exe/winxp/ultra.inf 4.8 KB 21 Nov 2002
atadrvr.exe/winxp/ultra.sys 26.2 KB 9 Oct 2002

How to Update Win9x-ME Promise Ultra100 (tm) IDE Controller (PDC20265) Device Drivers Quickly & Easily

Step 1 - Download Your Driver

To get the Win9x-ME Promise Ultra100 (tm) IDE Controller (PDC20265) driver, click the green download button above. After you complete your download, move on to Step 2.

If the driver listed is not the right version or operating system, search our driver archive for the correct version. Enter Promise Win9x-ME Promise Ultra100 (tm) IDE Controller (PDC20265) into the search box above and then submit. In the results, choose the best match for your PC and operating system.

Tech Tip: If you are having trouble deciding which is the right driver, try the Promise Driver Update Utility. It is a software utility which automatically finds and downloads the right driver.

To find the newest driver, you may need to visit the Promise website. Most major device manufacturers update their drivers regularly.

Step 2 - Install Your Driver

Once you have downloaded your new driver, you'll need to install it. In Windows, use a built-in utility called Device Manager, which allows you to see all of the devices recognized by your system, and the drivers associated with them.

How to Open Device Manager

  • In Windows 11, Windows 10 & Windows 8.1, right-click the Start menu and select Device Manager

  • In Windows 8, swipe up from the bottom, or right-click anywhere on the desktop and choose "All Apps" -> swipe or scroll right and choose "Control Panel" (under Windows System section) -> Hardware and Sound -> Device Manager

  • In Windows 7, click Start -> Control Panel -> Hardware and Sound -> Device Manager

  • In Windows Vista, click Start -> Control Panel -> System and Maintenance -> Device Manager

  • In Windows XP, click Start -> Control Panel -> Performance and Maintenance -> System -> Hardware tab -> Device Manager button

How to Install a driver from Device Manager

  1. Locate the device and model that is having the issue and double-click on it to open the Properties dialog box.

  2. Select the Driver tab.

  3. Click the Update Driver button and follow the instructions.

In most cases, you will need to reboot your computer in order for the driver update to take effect.

Tech Tip: Driver downloads and updates come in a variety of file formats with different file extensions. For example, you may have downloaded an EXE, INF, ZIP, or SYS file. Each file type has a slighty different installation procedure to follow.

For more help, visit our Driver Support Page for step-by-step videos on how to install drivers for every file type.

This website is not affiliated with Promise. All company names/logos are properties of their owners.
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