Mac OS X 10.10.3: Startup disk lost/de-selected post YosemiteRecoveryHD update

Number:rdar://20498179 Date Originated:10-Apr-2015 10:57 AM
Status:Closed Resolved:Duplicate
Product:OS X Product Version:Mac OS X 10.10.3 (14D131)
Classification:Serious Bug Reproducible:Sometimes
Summary: Startup disk becomes unset post install of Yosemite Recovery HD update

Steps to Reproduce:
1. 10.10.2 machine is offered 10.10.3 and recovery update
2. Machine is encrypted and firmware password is in effect
3. Run Yosemite Recovery HD update alone
4. run systemsetup -getstartupdisk

Expected Results:
command should return ‘/System/Library/CoreServices’

Actual Results:
No output, and upon reboot there is the flashing ‘question mark on folder’ animation, indicating no bootable OS was found, since searching for a bootable startup disk is disabled by applying the firmware password, as it also affects Target Disk Mode, and Netboot

hard to correlate if just FV2 or just firmware passwords or just certain hardware models cause the failure state, can say that 2013+2014 MBAirs and RetinaiMacs with both FV2 & firmwarepass have been affected so far

Affected install count: 423 Macs at Montefiore Medical Center, NY, more at affiliated Albert Einstein School of Medicine


Considered dupe of 20470498

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