R4i causing strange behavior

  • Last Post 23 September 2020
John Cunningham posted this 18 September 2020

I recently installed the Pegasus R4i in my MacPro 2019 and there are now strange noises coming form the Mac. The noise is like a wind noise bith a bumping sound and happens fairly frequently but not all the time.  There are also beeps on every startup that weren't there before, a long then short beep. Tpo add to this the Mac now won't boot unless the USB hub is disconnected, something which hadn't happenned prior to the R4i install.  Is anyone else experiencing any of these issues?

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Ranjith kumar posted this 18 September 2020

Hi John,

Are you able to access the Promise utility, if yes, kindly get the subsystem report

and reach us through creating a web support case id at support.promise.com.

Steps to save the subsystem report:


- Open promise utility

- Click subsystem information icon on the top of the Promise Utility window

- Click the lock symbol on the left bottom corner of the screen to unlock the utility

- Click on save service report button to save the subsystem report

Below is the Promise KB link to know how to attach files to the web support case:



Promise Team


John Cunningham posted this 23 September 2020

So after 5 days of back and forth with support there is no resolution so I'll be sending the unit back to Apple.  Very disappointed with the R4i and would not recommend it at all. I'll stick with the external Synology NAS which has been rock solid.