Maxtor D740X-6L 20.0 AT Product Manual page 41

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At the factory, the Maxtor D740X-6L 20.0/40.0/60.0/80.0GB AT hard disk drives
receive a low-level format that creates the actual tracks and sectors on the drive. Table
4-2 shows the capacity resulting from this process. Formatting done at the user level,
for operation with DOS, UNIX, or other operating systems, may result in less capacity
than the physical capacity shown in Table 4-2.
Formatted Capacity
Number of 512-byte
sectors available
Note: The AT capacity is artificially limited to a 2.1GB partition boundary.
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Data is transferred from the disk to the read buffer at a rate of up to 750Mb/s in bursts.
Data is transferred from the read buffer to the ATA bus at a rate of up to 16.7MB/s
using programmed I/O with IORDY, or at a rate of up to 133MB/s using Ultra
ATA/133. For more detailed information on interface timing, refer to Chapter 6.
6 C D N G  
    ) $     ) $
20,547MB 40,027MB
40,132,503 78,177,792
Maxtor D740X-6L 20.0/40.0/60.0/80.0GB AT
Formatted Capacity
    ) $
60,040MB
117,266,688
Specifications
    ) $
80,054MB
156,355,582
4-3