Re: Booting from SSD or not

[Joseph Loo]

On 09/01/2016 04:58 AM, fred roller wrote:
> You could change the desktop for each system ;) low tech but effective
> in knowing which system you are on.
>
> On Thu, Sep 1, 2016 at 6:23 AM, Ian Chapman <[e-mail]
> > wrote:
> On 01/09/16 14:51, Kevin Wilson wrote:
>
>     Is there a way to know whether to boot was done from SSD or not ?
>     (I know I can try to read the product name of the device from which
>     boot was done, but in many cases this is not enough to know straight
>     away whether it is SSD or not.
>
>
> cat /sys/block/sdX/queue/rotational
>
> 1 = Spinning Disk
> 0 = SSD
>
> Unless you're crudely assuming sda is your boot disk, you'll need to
> figure that out, but that's not too hard.
>
> -- 
> Ian Chapman.
>
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try running fstrim -av on a spinning vs ssd system