You can also name the USB flash drive to something other than "Untitled," but just make sure to change the command in Step 3 to reflect the correct name. If you do, unmount the other volume or rename it temporarily. Step 2: Format a USB flash drive that's at least 8GB, as Mac OS Extended (Journaled) and keep the default name as "Untitled." Make sure that you don't have another volume with the same name. Make sure the installer is located in the Applications folder. If you've already upgraded, you'll have to download the installer again from the App Store, since it deletes itself after the upgrade. command: $ bless -info /Volumes/Install\ OS\ X\ Yosemite/įinderinfo: 597 => Blessed System Folder is /Volumes/Install OS X Yosemite/.IABootFilesįinderinfo: 615 => Blessed System File is /Volumes/Install OS X Yosemite/.IABootFiles/boot.efiįinderinfo: 0 => Open-folder linked list emptyįinderinfo: 0 => No alternate OS blessed file/folderįinderinfo: 597 => OS X blessed folder is /Volumes/Install OS X Yosemite/.Step 1: Download the OS X Mavericks installer from the App Store, but don't run the installer yet. You can check the screenshot to confirm though. Here is a screenshot of the "Startup Disk" option within "System Preferences" on my working MBP that has the Bootable USB plugged in - which proves that it was properly created, I believe. The below screenshot shows EFI in Debug mode in Disk Utility.įor what it's worth, when I plug in this drive into my working MBP, I see the "Install OS X Yosemite" get mounted in Finder. Not sure how to tell if it is a Boot disk or not. Specifically choice number 1, where I downloaded the OS from the App Store and ran the terminal commands on a pre-formatted USB drive.īelow you will see the Disk Utility for the USB drive. I made the USB Boot drive from this guide: I have already successfully backed up my files. How do I either boot to my USB, or just get a restore done? I am concerned that the HD may be dead/dying, but I don't want to jump to that conclusion yet.
When I try to run recovery, it runs for a little and then goes to a "no" symbol, with the spinner still spinning. The only drives I see when holding down option are Macintosh HD and Recovery. Per Apple, this is my machine: MacBook Pro (13-inch, Mid 2009) It is the full body aluminium with the Superdrive. When I hold option during Boot, the USB drive doesn't show up on the menu. I created a Yosemite boot USB, from the App Store version 10.10.1.
0 kommentar(er)
