I installed OS X Mavericks on a external hard drive. This caused a problem I did not anticipate: I can no longer boot from the internal Yosemite installation.
How can I instruct OSX to boot from my Yosemite installation instead of the Install OS X Mavericks container? Am I screwed?
If I remove the external hard drive and press the option key during startup there is only the "OS X Base System" visible.
In single user mode I can see the system mounting an image from inside Install OS X Mavericks.app. Full verbose startup output
Everything from the internal hard drive is still accessible under "/Volumes/Macintosh HD" when running from external drive. However in Disk Utility there is no Partition Map Scheme for internal drive.
The file /Library/Preferences/SystemConfiguration/com.apple.Boot.plist on the internal drive has no instructions about mounting the installer DMG.
bless --info command produces following results:
Blessed System Folder is /Volumes/Macintosh HD/System/Library/CoreServices Blessed System File is /Volumes/Macintosh HD/System/Library/CoreServices/boot.efi Open-folder linked list empty No alternate OS blessed file/folder Unused field unset OS X blessed folder is /Volumes/Macintosh HD/System/Library/CoreServices