# Prime 4 - SSD - Not displaying on Controller

**URL:** <https://community.enginedj.com/t/prime-4-ssd-not-displaying-on-controller/19870>\
**Category:** Standalone Controllers\
**Tags:** engine-os, prime4\
**Created:** [February 17, 2020, 8:15pm UTC](https://community.enginedj.com/t/prime-4-ssd-not-displaying-on-controller/19870 "2020-02-17T20:15:05Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Mark.Weibel](https://community.enginedj.com/letter_avatar_proxy/v4/letter/m/87869e/32.png) [@Mark.Weibel](https://community.enginedj.com/u/Mark.Weibel)\
**Post date:** [February 17, 2020, 8:15pm UTC](https://community.enginedj.com/t/prime-4-ssd-not-displaying-on-controller/19870/1 "2020-02-17T20:15:05Z")

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Some help please !!!

recently purchased the prime 4 controller.

i’ve installed and formatted the 500gb Samsung SSD to exFat operating on MacBook pro 10.14.6.

I’ve transferred music through the Engine Prime software, the SSD is recognised as a device within engine prime.

when i open the SSD drive on my desktop (away from engine prime) it shows that music has transferred across.

Unfortunately when i operate the controller in stand alone mode i cannot see the SSD on the display screen of the prime 4 controller.

Can anyone help please

Thanks Mark

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<div class="post-metadata">

**Author:** ![Reese](https://community.enginedj.com/user_avatar/community.enginedj.com/reese/32/875_2.png) [@Reese](https://community.enginedj.com/u/Reese)\
**Post date:** [February 17, 2020, 8:55pm UTC](https://community.enginedj.com/t/prime-4-ssd-not-displaying-on-controller/19870/2 "2020-02-17T20:55:59Z")

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I think you need to power cycle Prime4 one extra time after you return to stand-alone mode.

Or the drive has an extra partition which Prime4 cannot read.