Chapter 4 |
| BIOS Setup Description | |
Primary/Secondary IDE Master/Slave Submenu | |||
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| Feature | Options | Description |
| Device | Hard Disk | Displays the type of drive detected. The |
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| ATAPI CDROM | below are the IDE disk drive parameters taken from the |
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| firmware of the IDE disk. |
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| Vendor | no option | Manufacturer of the device. |
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| Size | no option | Total size of the device. |
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| LBA Mode | supported | Shows whether the device supports Logical Block |
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| not supported | Addressing. |
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| Block Mode | number of sectors | Block mode boosts IDE performance by increasing the |
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| amount of data transfered. Only 512 byte of data can be |
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| transfered per interrupt if block mode is not used. Block |
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| mode allows transfers of up to 64 kB per interrupt. |
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| PIO Mode | 0, 1, 2, 3, 4 | IDE PIO mode programs timing cycles between the IDE |
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| drive and the programmable IDE controller. As the PIO mode |
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| increases, the cycle time decreases. |
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| Async DMA | no option | This indicates the highest Asynchronous DMA Mode that is |
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| supported. |
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| Ultra DMA | no option | This indicates the highest Synchronous DMA Mode that is |
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| supported. |
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| S.M.A.R.T | no option | |
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| used by IDE drives of some manufacturers to predict drive |
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| failures. |
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| Type | Not Installed | Sets the type of device that the BIOS attempts to boot from |
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| Auto | after the POST has completed. |
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| CD/DVD | Not Installed prevents the BIOS from searching for an IDE |
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| ARMD | |
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| disk. | |
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| Auto allows the BIOS to auto detect the IDE disk drive type. |
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| CD/DVD specifies that an IDE CD/DVD drive is attached. |
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| The BIOS will not attempt to search for other types of IDE |
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| disk drives. |
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| ARMD specifies an ATAPI Removable Media Device. This |
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| includes, but is not limited to ZIP and |
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| LBA/Large | Disabled | Set to AUTO to let the BIOS auto detect LBA mode control. |
| Mode | Auto | Set to Disabled to prevent the BIOS from using LBA mode. |
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| Block | Disabled | Set to AUTO to let the BIOS auto detect device support for |
| Auto | multi sector transfer. The data transfer to and from the device | |
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| will occur multiple (the number of sectors, see above) sectors | |
| Transfer) |
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| at a time. | |
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| Set to Disabled to prevent the BIOS from using block mode. |
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| The data transfer to and from the device will occur one sector |
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| at a time. |
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| PIO Mode | Auto | Set to AUTO to let the BIOS auto detect the supported PIO |
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| 0, 1, 2, 3, 4 | mode. |
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68 | Reference Manual | COM 830 |
