Information and details on why an external drive spins down and goes into sleep, standby mode.*END
External portable and desktop hard drives will spin down after 10 minutes of no inactivity.
This is called, sleep, standby or power saver mode.
Access the drive will wake it up.
![]() | Higher capacity drives take more power and time to spin up. |
WD Drive Utilities Sleep Timer can be on supported external drives.
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- Answer ID 11449: macOS: External Drive No Longer Accessible After Returning from System Sleep