Not enough disk space when installing Windows XP SP3 on Mac boot camp

I got this message when i tried to install SP3 on a Windows XP SP2 running on a Mac (boot camp): “There is not enough disk space on C:\WINDOWS\$NtServicePackUninstall$ to install Service Pack 3”

Solved the problem by adding a new string value named BootDir with the value C:\ under HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Setup\. Restarted and installed SP3.


  1. cuq says:

    thank you! you save me hours! I think I could never solve this by my own…

  2. David says:

    Ever since SP3 came out, it kept giving me a not enough disk space error, no matter how much space I freed up. Finally was able to get it to work — thanks!

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