If you’ve created a bootable partition on a USB flash drive or external hard drive before, I’m sure you’ll already be aware of this.
#MAC OS X INSTALL DISC NOT BOOTING DRIVER#
Warning: The driver descriptor says the physical block size is 2048 bytes, but Linux says it is 512 bytes.Īll these warnings are safe to ignore, and your drive should be able to boot without any problems. Holding down the Option (or alt) key directly after switching on your Mac will bring up all bootable options disc drive, internal hard drive and, importantly, peripherals connected via USB ports. You can easily burn a bootable image of OS X on a DVD by using Disk Utility. The same steps are valid for Mountain Lion and Mavericks. Locate InstallESD.dmg disk image file this is the file you need to reinstall Lion OS X. So, it is not too complicated to Mac boot from CD/DVD. Go to external drive > OS X Install Data. Try making a fresh table, and using Parted's rescue feature to recover partitions. This will start the OS X installer from the CD/DVD on your Mac. Is this a GPT partition table? Both the primary and backup GPT tables are corrupt. Or perhaps you deleted the GPT table, and are now using an msdos partition table. It is advised that you use a dedicated USB for this process. Create a bootable installer: You can also use if the Mac recovery mode is not working to create a bootable installer using the Disk Utility feature.
#MAC OS X INSTALL DISC NOT BOOTING UPDATE#
Perhaps it was corrupted - possibly by a program that doesn't understand GPT partition tables. Choose the Recovery Drive to boot Mac and click on Use Disk to update the system storage. However, it does not have a valid fake msdos partition table, as it should. dev/xxx contains GPT signatures, indicating that it has a GPT table. Ubuntu images (and potentially some other related GNU/Linux distributions) have a peculiar format that allows the image to boot without any further modification from both CDs and USB drives.Ī consequence of this enhancement is that some programs, like parted get confused about the drive's format and partition table, printing warnings such as:
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