How to set optical drive speed

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The speed of the optical drive is set separately for CD-ROM and DVD, and is reset at reboot and resume from suspend.

  • CD-ROM: use # hdparm -E num or # eject -x num .
  • DVD: use # speedcontrol -x num (sourcecode here).

For recent ThinkPad models running kernels older than 2.6.15, this may require the libata pass-through patch.

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