Originally Answered: What is best file system format for external HDs that will be used on Mac and Windows systems? FAT32 will work with both systems. The downside is that a single file cannot be more than 4GB in size. You can format an external hard drive or thumb drive to work seamlessly with both Mac and Windows by using the ExFAT file system. You can select the ExFAT format when using the Disk Utility to format the drive. The ExFAT format supports virtually any size hard drive and file, unlike the outdated FAT32 format.
You may wish to use an external FireWire or USB hard drive to store your Aperture Library, referenced images, or Vaults. Here are some suggestions on preparing the external hard drive for best performance with Aperture. Many external hard drives come pre-formatted as FAT 32. This is a native Windows file format that can be read by Mac OS X, but is not ideal for use with Aperture.
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Before you begin to use your new external hard drive with Aperture, reformat it to the Mac OS Extended file system:
- Be sure your drive is attached and mounted.
- If you have already written any data to the drive, back it up before proceeding to the next step.
- In the Finder, choose Go > Utilities. The /Applications/Utilities folder will open.
- Launch Disk Utility.
- Click the icon for your external hard drive in the sidebar on the left.
- Click the Erase tab along the top of the window.
- From the Volume Format menu, choose Mac OS Extended (Journaled).
- Enter a name for the external hard drive in the Name field.
- Click the Erase button.