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How to get to recovery mode with a hardware lock

After the new version of Disk Utility destroyed my Time Machine, I want to get into recovery mode.


I have a hardware lock set on my iMac.


When I boot, even if I hold CMD-R after the chime, I get the lock and have to enter the password. After that it immediately shows the normal login screen (list of users).


How do you get to recovery mode once you have set the hardware lock?


Thanks,

Craig.

iMac, OS X El Capitan (10.11.3)

Posted on Feb 10, 2016 3:34 PM

Reply
13 replies

Feb 10, 2016 4:37 PM in response to crashmeister

The recovery partition on disk0 does not show up when holding Opt during startup. Any ideas ?


/dev/disk0 (internal, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *1.0 TB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_CoreStorage FusionGroup 999.3 GB disk0s2

3: Apple_Boot Recovery HD 650.1 MB disk0s3

/dev/disk1 (internal, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *240.1 GB disk1

1: EFI EFI 209.7 MB disk1s1

2: Apple_CoreStorage FusionGroup 239.7 GB disk1s2

3: Apple_Boot Boot OS X 134.2 MB disk1s3

/dev/disk2 (internal, virtual):

#: TYPE NAME SIZE IDENTIFIER

0: Apple_HFS Macintosh HD +1.2 TB disk2

Logical Volume on disk1s2, disk0s2

9B2CE459-1CBB-4EE1-9D76-A6FFCF81DFB4

Unlocked Encrypted Fusion Drive

Feb 10, 2016 5:11 PM in response to crashmeister

crashmeister wrote:


So how does one get a usable recovery partition when using core storage?

I don't think the firmware password is the issue. If I can get the mac to see the recovery partition or create one elsewhere I can use that.

It is usable (I imagine). For whatever reason, the Recovery partition cannot be seen on a CoreStorage volume in the Startup Manager.


Did you try Internet Recovery?

If you can get into IR but not regular Recovery, your Recovery partition may be damaged, but then it should have defaulted to IR unless your iMac is not capable of Internet Recovery.

Feb 13, 2016 12:55 PM in response to Barney-15E

Current status (and definite bugs):


I created a new USB thumb drive with El Capitan (my previous was Yosemite).

Boot with OPT (HW lock pswd reqd). USB Thumb Drive is present.

Choose USB Thumb Drive and boots into 'Utils' screen. TM is present (yay!!!) and I go far enough down the restore path to check that it actually sees the TM backup (more yay!!!)

I then remove the hardware lock - now comes the issues:

Boot with CMD-R - still no recovery available from the HDD. It ignores the CMD-R and boots normally.

Boot with OPT. Well, look what shows up! Now I get a TM disk as a boot option. Out of curiosity I select it and... after a while I get a 'no' symbol on the gray screen and it proceeds to boot from MacIntosh HD.


Why does it show the TM if you can't use it? Why does TM not show up when a hardware lock is in place but does when it is not? Buggy!!!


Anyway, I am happy that I can recover using TM if I have a thumb drive with the latest OS. At least ONE thing works.


About to redo the HW lock. Removing it served no usable difference.

How to get to recovery mode with a hardware lock

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