NEC POWERMATE PROFESSIONAL - SERVICE MANUAL 05-1997 Service Manual page 54

2-12 Setup and Operation
IDE Device Configuration Submenu
The Hard Disk Submenu lets you check or change the following hard disk drive parameters:
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IDE Device Configuration
Number of Cylinders
Number of Heads
Number of Sectors
Maximum Capacity
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IDE Translation Mode
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Multiple Sector Setting
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Fast Programmed I/O Modes.
IDE Device Configuration
The system is shipped with default as "Auto Configured" selected in this submenu. The
system then automatically detects the hard disk type and sets the remaining parameters.
If the IDE hard disk does not feature auto IDE type detection or the IDE hard disk was
formatted on another system with parameters different than those reported by the drive, you
need to select "User-Definable," and set the "Number of Cylinders," "Number of Heads,"
"Number of Sectors," and "Maximum Capacity."
IDE Translation Mode
The IDE Translation Mode parameter controls the way in which the BIOS interacts with
the drive in terms of drive geometry. Proper choice is dependent upon the drive's size,
capabilities, and the operating system (OS) used. The following choices are available:
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Standard CHS
limits IDE capacity to a maximum of 528 MB regardless of the size of the drive
used.
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Logical Block
by the Standard CHS mode. It should be used only when the drive supports
logical block addressing (LBA), and the OS supports LBA, or uses the BIOS to
access the disk.
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Extended CHS
imposed by the Standard CHS mode. It can be used with drives that are larger
than 528 MB, but does not support the LBA mode.
is the translation mode that has been in use for years. Its use
mode overcomes the 528 MB maximum size limitations imposed
mode also overcomes the 528 MB maximum size limitations