Pegasus2 R4 has stopped working on iMac Studio Monterey

  • Last Post 09 June 2022
Robert Gajšek posted this 08 June 2022

Pegasus2 R4 has stopped working on iMac studio Monterey (Raid 5) Pegasus 2 R2 on RAID 0 is working properly. What can be done with NAS station R4?


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David Cain posted this 09 June 2022



I have a similar issue. I just upgraded from a 2017 iMac to the Mac Studio. Now my Pegasus R6 won't mount. The first gen thunderbolt cable from my Pegasus R6 goes through a StarTech adapter into one of the Mac Studio's USB-C ports. I know it's not a cable issue because the R6 still mounts on my iMac. In the Mac Studio's System Report I can see the R6 upstream but nothing is mounted.

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Gautham Sakthi posted this 08 June 2022

Hi Robert,

Try using different thundertbolt cable. Swap port on the back of the unit.

Register your unit at to create a web support for further inestigation.