Disk Locked - Unable to Reinstall Sierra

gagliardia

macrumors newbie
Original poster
Feb 10, 2019
3
0
I have a 2012 imac and I was running High Sierra on it. I was going to sell it, so I erased it using the recovery system. Never had a problem before, but this time when I went in to reinstall, it says that the disk is locked. I can't find a way to unlock the disk, all the options in disk utility are greyed out except "first aid" and "partition" - but it won't let me partition either. I am completely at a loss. I already did the Internet Recovery and my computer gets stuck on the apple logo after the internet recovery screen finishes - it was there for 3 hours last night and never moved on from there. Any help appreciated.
 

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gagliardia

macrumors newbie
Original poster
Feb 10, 2019
3
0
Change your view options so you can see the entire disk. It should be familiar to you from there.
Sorry, wish I could say it was familiar but poking around at the view options doesn't change anything. You're referring to view options in the Disk Utility?
 
Last edited:

SecuritySteve

macrumors 6502a
Jul 6, 2017
759
899
California
Yes, right now you're only seeing the partition that contains the OS X base system, as opposed to the HDD / SSD itself. If you could view that entire disk, you might be able to reformat / erase it from there. The view options on the left should have an option to make the entire container disk visible.
 

gagliardia

macrumors newbie
Original poster
Feb 10, 2019
3
0
Yes, right now you're only seeing the partition that contains the OS X base system, as opposed to the HDD / SSD itself. If you could view that entire disk, you might be able to reformat / erase it from there. The view options on the left should have an option to make the entire container disk visible.
So I can now see this, but when I tried to partition it I got this error. I get this error when I try to partition either the "WDC" or the "OSX"
 

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Ihatemyimacrightnow

macrumors newbie
Mar 31, 2019
4
0
I have a 2012 imac and I was running High Sierra on it. I was going to sell it, so I erased it using the recovery system. Never had a problem before, but this time when I went in to reinstall, it says that the disk is locked. I can't find a way to unlock the disk, all the options in disk utility are greyed out except "first aid" and "partition" - but it won't let me partition either. I am completely at a loss. I already did the Internet Recovery and my computer gets stuck on the apple logo after the internet recovery screen finishes - it was there for 3 hours last night and never moved on from there. Any help appreciated.
[doublepost=1554085039][/doublepost]Did you ever figure it out? I’m having the same issue right now