Disk Drives (Aptiva 2170/71/72/74 - SL-A)
If you install a new diskette, hard disk, or CD/DVD-ROM drive, BIOS auto detects the
presence of these devices.
Enter Setup to identify or verify the type of drive installed in the computer.
If you want to change any drive setting, select Disk Drives from the main menu.
The Disk Drives menu appears showing the diskette drive and IDE drive parameters.
Floppy Drive A
This option displays the size and storage capacity of the currently installed
diskette drive. Empty drive bays are indicated with a 'None' setting.
LS-120 Drive As
This option allows user to set for the LS-120 drive.
Empty drive bays are indicated with a 'Normal' setting.
Its possible settings are:
The LS-120 drive is configured by Windows 98 and acts as an ATAPI removal media.
System recognizes the LS-120 drive as drive number 0 (drive A).
If a standard diskette drive A exists, system automatically identifies it as drive B.
System recognizes the LS-120 drive as drive B.
-ATTENTION- If 'Boot Sequence' in 'Startup Options'
is set to CD-ROM and a bootable CD is loaded, BIOS identifies LS-120 (original set as drive A)
as drive B and the standard diskette drive becomes inaccessible.
IDE Hard Disk and CD/DVD-ROM Drives
The Disk Drives menu includes four IDE drive items that allow you to configure
the hard disk drives and the CD/DVD-ROM drive. Selecting any one of these
items displays a submenu with details on a particular IDE drive.
The IDE drive items are identified as follows:
Proceed to the following for details on the parameters under each IDE drive submenu.
Type - This item specifies the number of cylinders, heads, and sectors, and the
size of a particular IDE drive.
If no information appears opposite the parameters, there is no drive installed in that channel.
Hard Disk Block Mode - This function enhances disk performance depending
on the hard disk in use. BIOS automatically detects if your hard disk supports this feature.
Setting to Auto allows data transfer in blocks (multiple sectors) to increase the data transfer rate.
If your system does not boot after setting this parameter to Auto, change the setting to Disabled.
The default setting for this parameter is Auto.
Advanced PIO Mode - The advanced PIO mode feature improves system
performance by allowing the use of faster hard disk drives.
If your hard disk supports this feature, you may set this parameter to Auto (default), Mode 0,
Mode 1, Mode 2, Mode 3, or Mode 4 depending on the hard disk requirements.
See the documentation that came with the hard disk.
If your hard disk does not support this function, set this parameter to Disabled.
Hard Disk Size > 528MB - This enhanced IDE feature works only under DOS
and Windows environments.
If set to Auto, which is the default, BIOS allows you to use a hard disk with a capacity
of more than 528 MB.
This is made possible through the Logical Block Address (LBA) mode translation.
You may be required to set this parameter to Disabled if you use other operating systems.
To prevent data loss, set this parameter to Auto if you are using a hard disk
with more than 528 MB capacity that was previously configured through the LBA mode.
If you use a hard disk configured through the user-specific cylinder-head-sector (CHS) mode,
set this parameter to Disabled.
Hard Disk 32-bit Access - Setting this parameter to Enabled improves system
performance by allowing the use of the 32-bit hard disk access.
This enhanced IDE feature only works under Windows 3.x, OS/2, Windows 95, Windows 98, and Novell NetWare.
If your software does not support this function, set this parameter to Disabled.
The default setting is Enabled.
DMA Transfer Mode - Setting this DMA Transfer Mode parameter to Auto will
enhance performance by maximizing the data transfer rate for this drive.
If set this parameter to Disable, the data transfer rate will be the most safe PIO mode 4.
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