Alternate Capacity Jumper; Figure 3. Alternate Capacity Jumper - Seagate ST34323A Product Manual

ST34323A Family Product Manual, Rev. C

2.2.3 Alternate capacity jumper

Some older computers may "hang" if their BIOS detects a hard drive that
has more than 4,092 cylinders at startup. The ST33223A and the
ST34323A include a capacity-limiting jumper, which sets the drive's
default translation geometry to 4,092 cylinders. This limits the drive's
capacity to 2.1 Gbytes, unless third-party software is used.
The drive is shipped for full capacity without a jumper set, as shown in
Figure 3. To enable the alternate capacity option, set a jumper on pins
1 and 2.

Figure 3. Alternate capacity jumper

3 1
Alternate capacity jumper
4 2
Full capacity (as shipped)
Limit capacity to 2.1 Gbytes
1
(4,092 cylinders)
1. Use this jumper setting if your
computer fails to boot because it
cannot recognize drives with more
than 4,092 cylinders.
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