84,488,480 programs installed

Should I remove PerfectDisk 2008 Professional?

What percent of users and experts removed it?
4% remove it96% keep it
Overall Sentiment
What do people think about it?
Be the first to rate (click star to rate)
How common is it?
Global Rank #33,661
United States Rank #38,485
Reach 0.0037%
Lifespan of installation (until removal)
< 7.73 days
39.86 days >
Average installed length: 20.94 days


9.0.76 32.88%
9.0.67 2.74%
9.0.64 15.07%
9.0.61 17.81%
9.0.52 9.59%
9.0.44 5.48%
9.0.39 16.44%

PerfectDisk 2008 Professional

What is PerfectDisk 2008 Professional?

PerfectDisk is a defragmentation utility for Windows that can optimize disk drives with an optimization strategy called SMARTPlacement as well as prevents fragmentation with OptiWrite (detects when Windows is going to fragment files and intelligently redirects I/O to stop the fragmentation).


The most used version is 9.0.76, with over 98% of all installations currently using this version. It adds a background controller service that is set to automatically run. Delaying the start of this service is possible through the service manager. The software installer includes 16 files and is usually about 23.26 MB (24,392,117 bytes).

Program detailsProgram details

URL: www.Raxco.com
Help link: www.raxco.com/support
Installation folder: C:\Program Files\Raxco\PerfectDisk2008\
Uninstaller: MsiExec.exe /I{2B6EC03E-6FA0-4D7C-9CCE-1B03819AB613}
(The Windows Installer is used for the installation, maintenance, and removal.)
Estimated size: 23.26 MB
Language: English (United States)

Program filesFiles installed by PerfectDisk 2008 Professional

  • AutoUpd91PS.dll - Raxco Software, Inc. AutoUpd91PS Application (AutoUpd91 Proxy)
  • PD91AgentS1.exe - PD91AgentS1 Module
  • PD91Engine.exe - PD91Engine Module
  • AutoUpd91.exe - PerfectDisk 2008 (Auto Update)
  • PD91Agent.exe - PD91Agent Module
  • PD91EnginePS.dll - PD91Engine Proxy
  • PD91Scanner.exe - PD91Scanner Module
  • PD91Utils.dll - PD91Utils Module
  • PDCmd.exe - PDCmd
  • PDDb.dll - PDDb Dynamic Link Library
  • PerfectDisk.exe
  • sqlite3.dll - sqlite3 Dynamic Link Library
  • QtCore4.dll (by Trolltech ASA) - Qt4 (C++ application development framework.)
  • QtGui4.dll (by Trolltech ASA)

Program behaviorsBehaviors exhibited

2 Services
  • PD91Engine.exe runs as a service named 'PD91Engine' (PD91Engine) "PerfectDisk's defrag engine".
  • PD91Agent.exe runs as a service named 'PD91Agent' (PD91Agent) "This service controls PerfectDisk's scheduling and remote communication.".

Program resource utilizationResource utilization averages

Memory:1.99 MB
21.09 MB average
Total CPU:0.0056675885%
0.031193% average
Kernel CPU:0.00414297%
0.016088% average
User CPU:0.00152461%
0.015104% average
70 average
I/O reads/min:127 Bytes
435.61 KB average
I/O writes/min:21 Bytes
105.02 KB average

How do I remove PerfectDisk 2008 Professional?

You can uninstall PerfectDisk 2008 Professional from your computer by using the Add/Remove Program feature in the Window's Control Panel.
  1. On the Start menu (for Windows 8, right-click the screen's bottom-left corner), click Control Panel, and then, under Programs, do one of the following:
    • Windows Vista/7/8/10: Click Uninstall a Program.
    • Windows XP: Click Add or Remove Programs.
  2. When you find the program PerfectDisk 2008 Professional, click it, and then do one of the following:
    • Windows Vista/7/8/10: Click Uninstall.
    • Windows XP: Click the Remove or Change/Remove tab (to the right of the program).
  3. Follow the prompts. A progress bar shows you how long it will take to remove PerfectDisk 2008 Professional.

Win XP 82%
Win 10 1%
Windows Service? Yes
(Installs a service)
Uninstall it 4%
Keep it 96%

Windows OS versionsWindows

Which Windows OS versions does it run on?
Windows XP 84.93%
Windows Vista 10.96%
Windows 7 2.74%
Windows 10 1.37%
Which OS releases does it run on?
Microsoft Windows XP 84.93%
Windows Vista Home Premiu... 9.59%
Windows 7 Home Premium 2.74%
Windows Vista Ultimate 1.37%
Windows 10 Pro 1.37%

Distribution by countryGeography

30.49% of installs come from the United States
Which countries install it?
  United States 30.49%
  MA 17.07%
  DZ 9.76%
  TN 6.10%
  Israel 4.88%
  Germany 3.66%
  France 2.44%
  RS 2.44%
  Austria 2.44%
  Spain 2.44%
  Canada 2.44%
  Hong Kong 1.22%
  MK 1.22%
  Taiwan 1.22%

OEM distributionPC manufacturers

What PC manufacturers (OEMs) have it installed?
Dell 34.04%
Acer 10.64%
Intel 10.64%
Hewlett-Packard 10.64%
Compaq 8.51%
American Megatrends 4.26%
Lenovo 4.26%
Packard Bell 2.13%
ASUS 2.13%
Common models
Dell OptiPlex 745 ... 4.62%
Dell Computer OptiPlex GX... 3.08%
HP Compaq dc7800p Small F... 3.08%
HP Compaq dc5750 Microtow... 3.08%

About (from Raxco Software Inc.)

For over 30 years Raxco Software has developed award-winning defragmentation solutions and performance utilities that improve hard drive and server performance, simplify system administration and help our customers work more efficiently –at home and at the office.
Publisher URL: www.raxco.com


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