Maxtor DiamondMax16 160 Manuel télécharger pdf (Page 11)

Breaking the 137GB Storage Barrier

A-2 DiamondMax Plus10 80/100/120/160/200/250/300GB AT

of the hard disk was accessible. This inability to access the entire drive is

referred to as a “capacity barrier” and it has been seen and overcome

many times in the computer and disk drive industry.

The 137-gigabyte barrier is the result of the original design specification

for the ATA interface that provided only 28 bits of address for data. This

specification means a hard disk can have a maximum of 268,435,456

sectors of 512 bytes of data which puts the ATA interface maximum at

137.4 gigabytes.

10 megabytes:early PC/XT limi

16 megabytes: FAT 12 limit

32 megabytes: DOS 3.x limit

128 megabytes: DOS 4.x limit

528 megabytes: Early ATA BIOSs without BIOS extensions

2.1 gigabytes: DOS file system partition limit

4.2 gigabytes: CMOS extended CHS addressing limit (not widely experienced)

8.4 gigabytes: BIOS/Int13 24-bit addressing limit

32 gigabytes: BIOS limit

10MB

16MB

32MB

128MB

528MB

2GB

4GB

8GB

33GB

100

1,000

10,000

100,000

1,000,000

10,000,000

1980 1985 1990 1995 2000 2005

137GB

5.x

4.x

3.x

DOS

Win95A

Win 3.x

Win98

Win95(osr2)

Win2000

WinME

WinXP

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 74 75

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Maxtor DiamondMax16 160 Manuel Page 11

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