Re: which command can show if usb 3.0 is used
Have an iso for which you know its size.
Use dd to copy that iso onto a usb 2.0 drive and time the copy.
Copy that same iso onto the usb 3.0 drive and time it.
If the usb 3.0 copy takes less time in the neighborhood of the expected
speed difference of usb 3.0 to usb 2.0 then you got fortunate.
If the copy takes the same amount of time or nearly the same amount of
time then usb 3.0 is not being used.
This is best done using a sports watch or stop watch.
On Mon, 31 May 2021, Long Wind wrote:
> Thanks, but lsblk just lists new usb diski want to find out if usb 3.0 is usedusb 3.0 is faster than usb 2.0
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