Mac cannot recognizing & Mount R4 but Promise utility can still see

  • Last Post 21 August 2018
Nont Pongpairoj posted this 21 August 2018



I had R4 hooked up to Mac Mini OSX10.12 and it had work great until 2 weeks ago when all of a sudden Mac cannot recognise the drive anymore.

All thunderbolt status light are blue, and the promise utility app can \ see the unit just fine but the mac comes up with alert everytime i plug R4 in that it is not a recognisable drive. I have try restart both mac and R4 several times to no avail. Can anyone help?


Many thanks in advance!

Devendra Kumar posted this 21 August 2018

Hi Nont,

It looks like this issue needs to be analyzed with the help of subsystem report of the unit to find out the exact issue. Please call technical support at 408-228-1500 or reach out through support case at