Have Modbook Pro with OS 10.10.2 and a powered seven-port USB hub. A 750-GB bus-powered drive has no problems with the hub in-between. But a powered drive with three partitions, one of them a Time Machine partition, always gets a failure in backup. Works fine when the hub is not between.

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    I'm voting to close this question as off-topic because this is about running OS X on non-Apple hardware. – Tetsujin Mar 30 '15 at 19:21
  • A Modbook is modified Apple hardware, so it's on-topic here. – Daniel Mar 30 '15 at 20:29
  • Have you tried a different hub? Does the drive work as expected otherwise? – Kevin Grabher Mar 30 '15 at 20:38

I have 4 USB 3 drives plugged into my MBP via a powered USB 3 hub and two of them have multiple partitions and different filesystems and all work just fine however the Modbook Pro does not yet support OS X 10.10, so that may be an issue.

From Modbook Support Center:


OS X Yosemite Not Currently Supported on the Modbook Pro The newest version of the OS X operating system, Yosemite (OS X 10.10), is not fully supported on the Modbook Pro.

We do not recommend upgrading your Modbook Pro to Yosemite at this time. (Both OS X 10.8 Mountain Lion and 10.9 Mavericks are supported on the Modbook Pro.)

An update to the Modbook Pro System Software and the Modbook Pro Pen Tablet Software offering compatibility with Yosemite and other features will be available in the near future. Check back here occasionally for updates.

  • That warning merely refers to their incompetence in supporting the digitizer. They should not have any effect on disk drives. Although, the digitizer does use the other USB port … – WGroleau Apr 4 '15 at 20:15

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