The Barracuda XT internal hard drive uses software to trick older systems into thinking it is running two separate hard drives, letting legacy systems running older BIOS with Windows XP, Vista, or Windows 7 access the full 3 TB. The Barracuda XT is partitioned, so that 2 TB of storage is set aside as the bootable hard drive, while the remainder is treated as a second drive for storing data. Within Windows Explorer, the operating system's file manger, each partition is seen as a separate hard drive. The Barracuda XT hard drive has a 64 MB cache for "burst performance" in cache-intensive applications, such as PC gaming and video editing. The cache is combined with the drive's 6 Gbps SATA interface. The 3.5-inch drive runs at 7200 rpms.
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