Pegasus2 R4 not mounting with Mojave

  • Last Post 05 February 2021
nick kelleher posted this 04 February 2021

Hi my Pegasus R4 wont mount with Mojave on Macbook mid 2015.

I have downloaded latest driver and Promise utility. It shows in system report in firewire tab as conected. The Promise utility just has tabs and dropdown menu but no window and won't open a window or recognise drive.

The R4 mounts fine on my son's Macbook Air running High Sierra.  Some software I use requires me to use Mojave.

Can anyone help?

Ranjith kumar posted this 05 February 2021

Hi Nick,

What is the power light status of the unit?

May I know the driver version you installed on your  Mac?

We need to verify the driver is loaded or not, so you can access the Pegasus unit.

Please reach us through for quick response.

thank you,


Promise Team