Ejecting encrypted USB Drive only unmounts not ejects?


hi all,

little obeservation made afternoon. have external usb drive , when formatted (macos extended), ejecting desktop unmounts volume , ejects drive (sends kind of power down signal can gather). means drive spins down, mine blinks led, , know ok remove drive.

however, since formatting drive encrypted, "ejecting" drive unmounts volume not power down drive. if wait couple of minutes drive power down suspect more manufacturer firmware settings macos.

in situaton place can see can "eject" drive , send power down signal right clicking on drive (not volume) in disk utility , selecting eject. works when volume has been ejected (unmounted).

not big problem dont yanking out usb cable disks still spinning (even though no volumes mounted). doesnt sound drive makes little squeak , click motor stops , assume head slams rest position?? far can tell safe still prefer not to.

question why encrypting drive mean macos can no longer unmount , eject unmount? prefer eject action both. re-formatting drive non-encrypted returns normal behaviour.

i've tried various terminal commands see if different happens , eject option within alfred no luck. ideas?

cheers.
 

i had noticed before didn't put 2 , 2 make connection between being encrypted drive vs. unencrypted one. may not due encryption per se core storage (which used current filevault). understanding modern hdd's have spring puts heads in safe position when power lost. that's you're hearing. noticed today if select "put hard disks sleep when possible" setting in system preferences , wait long enough, turn off encrypted drive - of course if eject it, power again! can't make statements hdd longevity in not powering down drive before disconnecting it. have encrypted hdd has started exhibit issues when running disk scanning program (slow reading of sectors) can't attribute not being powered down because it's toshiba drive , i've had issues other toshiba drive had , because spent of it's life non-core storage drive , since being encrypted, it's been used on sporadic basis (it's off-site backup , sectors slow beyond backup data is).
 


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