set your ssd disk as a non-rotating medium

sudo echo 0 > /sys/block/sdb/queue/rotational
if you still get a permissions error using sudo, then nano the file: sudo nano -w /sys/block/sdb/queue/rotational and change 1 to 0 this thread: says that this will "help the block layer to optimize a few decisions"

By: nickleus
2009-11-27 12:16:17

What Others Think

You can use sudo and tee to avoid permission errors when running a command like this: echo 0 | sudo tee /sys/block/sdb/queue/rotational or use sudo tee -a to append to a file.
eightmillion · 597 weeks and 3 days ago
@eightmillion, thanks, i've never used tee before. now i know =) awesome.
nickleus · 597 weeks and 3 days ago
The permission error occurs because the redirection is setup by your shell with your normal permissions and not by sudo. eightmillion's solution is great. Here are two more. (1) use here documents and dd: sudo dd <<<"0" of=/sys/block/sdb/queue/rotational (here the sudo -e /sys/block/sdb/queue/rotational
bwoodacre · 597 weeks and 2 days ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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