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Apple Computing Products:
macOS - Operating System
How Do I Unlock a Disk Drive?
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<blockquote data-quote="The Jeep" data-source="post: 1631851" data-attributes="member: 19981"><p>Hi - well, my new Yosmite install is not going without a few hickups! I have my old 'main' drive in Slot 1 of my Mac Pro 5,1 running Mountain Lion OSX 10.8 and my newly installed Yosemite in a new 2TB drive in Slot 2. </p><p></p><p>I have also installed a 4TB drive for Time machine backup of both systems, so I realise now I should've partitioned that drive from the start. Instead I just formatted it and started a Backup while in OSX 10.8. I then rebooted in 10.10 and went into disk utility and tried to partition my backup drive there. For some reason it didn't work so I went ahead and erased the disk expecting to be able to start over. But no, it now seems the disk is 'locked'.</p><p></p><p>I then went into Time Machine in 10.8 and removed that disk as backup disk and did likewise in 10.10. Now the drive doesn't show up in 'My Computer".</p><p></p><p>In Disk Utility it appears with only 'First Aid' and 'Partition' options available. I First Aid I can verify and repair the disk but it comes out squeaky clean, with no errors. In Partition all the controls are greyed out and I can do nothing. In OSX 10.8 at least it lets me know that the disk is locked.</p><p></p><p>So, how do I unlock a disk drive that I've locked through cocking around? There must be a way, Shirley! <img src="/mac_images/images/smilies/Undecided.png" class="smilie" loading="lazy" alt=":\" title="Undecided :\" data-shortname=":\" /></p></blockquote><p></p>
[QUOTE="The Jeep, post: 1631851, member: 19981"] Hi - well, my new Yosmite install is not going without a few hickups! I have my old 'main' drive in Slot 1 of my Mac Pro 5,1 running Mountain Lion OSX 10.8 and my newly installed Yosemite in a new 2TB drive in Slot 2. I have also installed a 4TB drive for Time machine backup of both systems, so I realise now I should've partitioned that drive from the start. Instead I just formatted it and started a Backup while in OSX 10.8. I then rebooted in 10.10 and went into disk utility and tried to partition my backup drive there. For some reason it didn't work so I went ahead and erased the disk expecting to be able to start over. But no, it now seems the disk is 'locked'. I then went into Time Machine in 10.8 and removed that disk as backup disk and did likewise in 10.10. Now the drive doesn't show up in 'My Computer". In Disk Utility it appears with only 'First Aid' and 'Partition' options available. I First Aid I can verify and repair the disk but it comes out squeaky clean, with no errors. In Partition all the controls are greyed out and I can do nothing. In OSX 10.8 at least it lets me know that the disk is locked. So, how do I unlock a disk drive that I've locked through cocking around? There must be a way, Shirley! :\ [/QUOTE]
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Apple Computing Products:
macOS - Operating System
How Do I Unlock a Disk Drive?
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