Apple Boot Camp (Mac OS X v10.5 Leopard) - Manual (Page 11)

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To format the partition for Windows Vista:
1 Click “Drive options (advanced).”
2 Click Format, and then click OK.
3 Click Next.
The Windows Vista partition is formatted using the NTFS file system.
Setting Up Windows
After you install the Windows software, your computer automatically restarts using
Windows. Use the Windows setup screens to configure Windows.