![]() We don’t have access to the drivers which control the Thunderbolt interface on the Mac. What is actually happening on my Mac when the disks ‘disappear’? We’ve discovered that, for the majority of users, this solution prevents the ‘disk ejecting while in use’ problem. Ensure that ‘Prevent computer from sleeping…’ is checked (see image below) Uncheck “Put hard disks to sleep…” (see image below)ģ. Go to the Energy Saver panel of System Preferences.Ģ. How to prevent this problem in older versions of Mac OSġ. It is due to this close relationship that the original problem with disks ejecting while in use was fixed in macOS 10.12.2. We have been working with Apple engineers for over 2 years, investigating and fixing bugs in Thunderbolt, and will continue to do so in the years ahead. Please collect a SoftRAID Tech Support Report and send it to our support engineers ( so we can determine if it is a new problem. Important Note: If you have upgraded to macOS 10.12.2 or later and your disks are still being ejected while in use, we want to hear from you. ![]() You can also enable the “Put hard disks to sleep when possible” setting in the Energy Saver panel of System Preferences. If you are unable to upgrade, you can use the instructions which prevent the problem in most, but not all, configurations.Īfter upgrading to macOS 10.12.2 or later, you can re-enable sleep on your Mac. We strongly recommend that you upgrade to macOS 10.12.2 or any later macOS version if you have encountered this problem. This problem is fixed from macOS 10.12.2 onwards. We now know that a problem in the macOS system software is the cause of disks ejecting while in use. ![]() This problem causes older Mac OS X versions (prior to 10.12.2) to think a disk is no longer attached even when it is still plugged in. If so, you may have encountered a problem which affects disks attached via the Thunderbolt bus. Have you been warned by the SoftRAID Monitor that there is a problem with your Mac? Has your Mac OS warned you that a volume was not ejected properly even when you know it’s still attached?
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