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

Originator:arubdesu
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

Regression:
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

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

Comments

Considered dupe of 20470498

By arubdesu at April 28, 2015, 8:34 p.m. (reply...)

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