Apple Event: May 7th at 7 am PT
Whenever I try to start up my mac I get No Bootable Device -- Insert boot disk and press any key I tried to use Alt during startup but that didn't work and I Also tried Command Alt P R but that also didn't work either. Any Help?
MacBook Pro with Retina display, OS X Yosemite (10.10.2)
Do you have another Mac?
No I just have my old windows computer
1. It is possible that Windows installation formatted and overwrote the Mac firmware. Can you boot into Windows ?
2. Do you have Yosemite Installer on an external disk?
1. My mac boots into windows first thats why I cant use my mac at all
2. No
If Windows is bootable, can you download GPT Fdisk from http://sourceforge.net/projects/gptfdisk/ ? It will download two binaries gdisk64 and gdisk32.
Here is an example of running Gdisk on Windows. You need to run this in Windows in a Command Window with Administrative privileges. The link at the bottom is a tutorial for Gdisk. Post the output of the 'p' command as shown.
C:\Users\MyName\Downloads\gdisk-windows-0.8.10>gdisk32 0:
GPT fdisk (gdisk) version 0.8.10
Partition table scan:
MBR: hybrid
BSD: not present
APM: not present
GPT: present
Found valid GPT with hybrid MBR; using GPT.
Command (? for help): p
Disk 0:: 500118192 sectors, 238.5 GiB
Logical sector size: 512 bytes
Disk identifier (GUID): 22749ACF-207D-458E-B255-5DF02C39DC2D
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 500118158
Partitions will be aligned on 8-sector boundaries
Total free space is 1325 sectors (662.5 KiB)
Number Start (sector) End (sector) Size Code Name
1 40 409639 200.0 MiB EF00 EFI System Partition
2 409640 250801735 119.4 GiB AF05 OSY-MBP13
3 250801736 252071271 619.9 MiB AB00 Recovery HD
4 252071936 500117503 118.3 GiB 0700 BOOTCAMP
Command (? for help):
My computer im using now? The mac doesn't have windows working cause of the error and all that.
What is the exact year/model of your Mac? Does it have an Optical drive? If it does not have built-in Optical drive, do you have an external Apple SuperDrive?
Not sure but I think 2012 Retina and the others I forgot
Is there a built-in Optical drive?
On the bottom cover of your Mac, the serial number should be etched. Use https://selfsolve.apple.com/agreementWarrantyDynamic.do and put in the serial number and you can post the exact Model year. You do not need to post your serial number on the discussion.
Please also see how to Find the serial number of your Apple hardware product - Apple Support.
MacBook Pro (Retina, 13-inch, Late 2012)
Can you try to boot Windows in Safe Mode?
It doesn't work either
At this point my recommendation is to find the nearest Apple Store and get a Genius Bar appointment. They have the ability to erase and re-install OSX and boot from external media.
Ok and thanks for all your help
Mac No Bootable Device
