Setup Utilities and Diagnostics Features
Heading | Option | Description |
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Storage | Device | Multisector Transfers (ATA disks only) |
(continued) | Configuration | Specifies how many sectors are transferred per |
| (continued) | operation. Options (subject to device capabilities) are Disabled, 8, |
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| and 16. |
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| Transfer Mode (IDE devices only) |
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| Specifies the active data transfer mode. Options (subject to device |
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| capabilities) are PIO 0, Max PIO, Enhanced DMA, Ultra DMA 0, |
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| and Max UDMA. |
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| Translation Mode (ATA disks only) |
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| Lets you select the translation mode to be used for the device. This |
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| enables the BIOS to access disks partitioned and formatted on other |
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| systems and may be necessary for users of older versions of UNIX |
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| (e.g., SCO UNIX version 3.2). Options are Automatic, |
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| LBA Assisted, User, and None |
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| Ä CAUTION: Ordinarily, the translation mode selected |
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| automatically by the BIOS should not be changed. If the selected |
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| translation mode is not compatible with the translation mode that |
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| was active when the disk was partitioned and formatted, the data |
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| on the disk will be inaccessible. |
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| Translation Parameters (ATA disks only) |
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| ✎ This feature appears only when User translation mode is selected. |
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| Allows you to specify the parameters (logical cylinders, heads, and |
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| sectors per track) used by the BIOS to translate disk I/O requests |
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| (from the operating system or an application) into terms the hard |
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| drive can accept. Logical cylinders may not exceed 1024. The |
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| number of heads may not exceed 256. The number of sectors per |
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| track may not exceed 63. These fields are only visible and |
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| changeable when the drive translation mode is set to User. |
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| Default Values IDE/SATA |
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| Allows you to specify the default values for the Multisector Transfers, |
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| Transfer Mode, and Translation Mode for ATA devices. |
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| Storage Options | Removable Media Boot |
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| Enables/disables ability to boot the system from removable media. |
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| Legacy Diskette Write |
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| Enables/disables ability to write data to legacy diskettes. |
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| ✎ After saving changes to Removable Media Write, the computer |
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| will restart. Turn the computer off, then on, manually. |
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| BIOS DMA Data Transfers |
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| Allows you to control how BIOS device I/O requests are serviced. |
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| When “Enable” is selected, the BIOS will service ATA device read |
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| and write requests with DMA data transfers. When “Disable” is |
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| selected, the BIOS will service ATA device read and write requests |
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| with PIO data transfers. |
✎Support for specific Computer Setup options may vary depending on the hardware configuration.
| Service Reference Guide, dc7700 |