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Knowledge Base > Products > Image for DOS > Problem Solving > Slow Disk Operations in Image for DOS

Slow Disk Operations in Image for DOS

Assuming the drive itself is not slow, this problem is usually caused by the system BIOS. You can try to correct this issue as follows:

  • Try using the BIOS (Direct) option to access the drives. This mode attempts to locate the hard drive using the system BIOS, but then attempts to access it directly, bypassing the BIOS. To get the most out of this option, you should also select the File (Direct) mode for the destination drive when backing up or the source drive when restoring. Please note that drives in RAID mode will revert to using BIOS access.

  • Some BIOS brands and versions will not automatically detect the mode properly, so you can try setting the PIO mode in the BIOS as appropriate (and nowadays, mode 4 would be your choice).

  • Some BIOS brands and versions support UDMA directly. If such a setting is available in your BIOS, try enabling it.

  • Ensure that you are using an 80-conductor IDE cable, where applicable.

  • Consider using the third-party DOS UDMA Driver available here, with the understanding that it is not officially supported and is to be used at your own risk.

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