UPGRADING REPAIRING PCs
UPGRADING REPAIRING PCs
UPGRADING REPAIRING PCs
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106<br />
Chapter 4—SCSI and IDE Hard Drives and Optical Drives<br />
Table 4.9 Sources for BIOS and Alternative Support for Large<br />
Hard Drives Continued<br />
Solution Benefits Cost Concerns<br />
Purchase BIOS May be less $35–$75; Make sure card is<br />
upgrade card. expensive than can be designed for full capacity<br />
purchasing combined of your hard disk; many<br />
BIOS with Y2K early versions had 2.1GB<br />
replacement date-rollover or 8.4GB limits; requires<br />
or new support or open ISA or PCI slot.<br />
motherboard; UDMA 33/66<br />
fast, easy<br />
install.<br />
features.<br />
Use BIOS You probably Download it Worst choice for large<br />
replacement received a from your hard disk support<br />
feature in copy of it hard disk because software drivers<br />
hard disk with your vendor if and non-standard disk<br />
installation drive. your drive structures can be altered<br />
software didn’t come and destroyed very<br />
supplied with<br />
drive.<br />
with a copy. easily.<br />
After you decide on a strategy for handling the full capacity of your<br />
hard disk, don’t change it! Don’t use a BIOS replacement option in<br />
a program such as Disk Manager or EZ-Drive and then decide to<br />
install a BIOS upgrade (flash, chip, or card). The BIOS support<br />
won’t be capable of working with your drive because it’s already<br />
being translated by the software. Make your choice before you finish<br />
your drive installation.<br />
Standard and Alternative Jumper<br />
Settings<br />
If you decide to use the BIOS replacement software shipped with<br />
the hard drive instead of downloading or purchasing a BIOS<br />
upgrade, you might need to use alternative jumper settings on your<br />
hard disk. An example of these settings as used by some Western<br />
Digital drives with capacities at 32GB or above is shown in Figure<br />
4.4. Many other drive makers use similar approaches to deal with<br />
this problem, as well as with the previous capacity limitation of<br />
2.5GB seen with older systems. Note that two jumper blocks are<br />
used; the normal master and slave jumper block plus a second<br />
jumper block to reduce the reported capacity of the drive.<br />
The Normal configurations (top) are used for IDE drives installed in<br />
systems whose BIOSs can handle drives with capacities over 32GB.
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