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Peripherals
MacFormat UK|May 2020
Peripherals
Thinking inside the box to refresh the parts other tips can’t reach

Randomly ejecting external SSD

Q Why does my external SSD keep getting randomly disconnected from my MacBook Pro?

by SANDY BRIDGER

A Disconnection, or unexpected ejection, is most commonly associated with sleep and wake events. External solid-state drive (SSD) enclosures often put themelves to sleep when not active, especially those drawing power over their connection, but that shouldn’t unmount or eject them from your Mac. When your Mac goes to sleep, it shouldn’t automatically eject attached drives, although rarely macOS may not be compatible with the drive, and it gets ejected in error. To be certain, check you’ve disabled the setting to ‘Put hard disks to sleep when possible’, in the Energy Saver pane.

Some hardware configurations do have problems, though. If an external SSD is connected to a USB-C port on an external display, then macOS is likely to power down those USB-C ports when it puts that display to sleep. At present, there’s no way to prevent this from happening apart from stopping the display from going to sleep, preferring a screensaver instead. In the Energy Saver pane, set the top slider to Never turn that display off.

Unexpected ejection at other times suggests a faulty drive or Mac, or software which has a serious bug. This is very hard to diagnose, as the only evidence is buried in the log, which isn’t easy to access. My free log browser Ulbow may be the best tool, as it can look back in the log to past events. It’s easy to recognise wake events with the message “PMRD: System Wake”, and the article at bit. ly/mac351brwlg provides a walkthrough.

How to capture line input audio

Q I need to record audio from several audio tapes using a player with only line output, but my iMac Late-2013 doesn’t have a line input. What’s the best way to do this?

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May 2020