Guest Richard Hercules Posted September 26, 2008 Posted September 26, 2008 I was unable to install TurboTax on my Windows XP machine and it turned out to be caused by a third party application: MacDrive. MacDrive by Mediafour allows Windows users to read Apple disks but also unknowingly defaults all drives on the machine to be Apple, if a dual format Apple/Windows disk is introduced. This only occasionally causes a problem, but is unlikely to be found, since it generally occurs some months AFTER installation of MacDrive. I went through all the Windows support debugging of checking my Registry autorun settings and updating all my Windows installers. None of this helped. I only found out the culprit was MacDrive when I re-formatted my hard drive and re-installed all applications one-by-one, checking the install capabilities of a dual format disk with each application. Here's the fix if you have MacDrive installed: # Open "My Computer" # Right-click on the CD/DVD drive containing the dual-format disc # Choose "MacDrive -> Show Windows files" # You can also globally set MacDrive to view the Windows files on a dual-format disc by going to Start > Control Panel, selecting MacDrive, selecting the "Settings" tab and checking "View Windows files" (under "Dual-format CDs/DVDs).
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