Linux

  1. Bug #499237
  2. Comment #26

Comment 26 for bug 499237

Revision history for this message
Marius B. Kotsbak (mariusko) wrote :

I guess this might not be fixable at all. Getting spin speed/SSD or not is done with this command (see http://comments.gmane.org/gmane.linux.kernel.bcache.devel/554):

$ sudo hdparm -I /dev/sda|grep Rot
 Nominal Media Rotation Rate: Solid State Device

This is my internal SSD hard drive. I tried with a rotational hard drive attached with USB, but get no information about that. Same with a USB memory stick. This leads me to believe that it is not possible to detect if a USB connected drive is SSD or not, and the kernel assumes rotational drive as default.