The Dualie comes formatted with HFS+ for use with Macs and Time Machine. To use the Dualie with a Windows PC, you must first reformat it with NTFS (or FAT32). This will erase any data on the drive, so back up any important data on the drive before reformatting.
To reformat the Dualie with NTFS, use the format tool built into your operating system (Windows)
Format to reformat the drive.
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In the FAT32 Format Utility, select your Buffalo hard drive from the drop-down menu at the top of the window. Choose FAT32 for the File System and choose a volume label. Click