Apple’s Boot Camp doesn’t play well with OSX Snow Leopard. One of the most common errors that users attempting to create a dual boot partition in Boot Camp is:
Your Disk Cannot Be Partitioned Because Some Files Cannot Be Moved. Back up the disk and use Disk Utility to format the disk as a single Mac OS Extended (Journaled) volume. Restore your information to the disk and try using Boot Camp Assistant again.
There are a lot of reported fixes for this, including backing up your entire hard drive to Time Machine, reformatting the drive, and restoring from backup.
However, there’s a much simpler solution that worked for me that only takes a couple of minutes. I wrestled with this problem for hours. After discovering a simple solution, I figured I met as well post it here to help anyone else experiencing the same problem.
If you’re experiencing the above error message in Boot Camp, here’s what to do:
- Shut down your Mac
- Restart while holding Command+S
- At the prompt, type:
Shut down. Restart. Open Boot Camp Assistant and partition the drive.
For almost all users, this simple procedure alleviates the problem.
This will start a disk check utility that will automatically fix the error that prevents a drive from partitioning within Boot Camp.