DRDY Timing – The BIOS Optimization Guide

DRDY Timing - The BIOS Optimization Guide

DRDY Timing

Common Options : Slowest, Default, Optimize

 

Quick Review

The DRDY Timing BIOS feature determines how quickly IDE or Serial ATA devices in the system can be readied for their next command, after executing a read or write command.

When set to Default, the IDE or Serial ATA device will retain its default DRDY timing.

When set to Slowest, the IDE or Serial ATA device will use a slower DRDY timing. This increases the time for the device to be ready for the next command, after it completes its task.

When set to Optimize, the IDE or Serial ATA device will use a faster DRDY timing. This decreases the time for the device to be ready for the next command, after it completes its task.

For maximum performance, you should set this BIOS feature to Optimize. This allows for faster access to the IDE and Serial ATA devices, improving their performance.

However, if this results in crashes or data corruption, you should revert to the Default setting. You should only set this BIOS feature to Slowest in rare occasions where the IDE or Serial ATA device actually requires a longer time to be ready.

 

Details

When an IDE or Serial ATA device executes a read or write command from the host controller, it sets the BSY (Busy) status bit so that the host controller knows that it is busy and cannot accept another command. Once the device has completed its task, it will set the BSY bit to 0, signalling that it is no longer busy.

However, the host controller cannot send the subsequent command to the IDE or Serial ATA device until that device sets the DRDY (Drive Ready) bit. The time from when the drive ceases to be “busy” until it becomes “ready” is known as the DRDY timing. The shorter the DRDY timing, the faster the drive is available for further commands, improving its performance.

The DRDY Timing BIOS feature determines how quickly IDE or Serial ATA devices in the system can be readied for their next command, after executing a read or write command.

When set to Default, the IDE or Serial ATA device will retain its default DRDY timing.

When set to Slowest, the IDE or Serial ATA device will use a slower DRDY timing. This increases the time for the device to be ready for the next command, after it completes its task.

When set to Optimize, the IDE or Serial ATA device will use a faster DRDY timing. This decreases the time for the device to be ready for the next command, after it completes its task.

For maximum performance, you should set this BIOS feature to Optimize. This allows for faster access to the IDE and Serial ATA devices, improving their performance.

However, if this results in crashes or data corruption, you should revert to the Default setting. You should only set this BIOS feature to Slowest in rare occasions where the IDE or Serial ATA device actually requires a longer time to be ready.

 

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