Boot from flash drive (on PC) to modify files, etc. Ideally the process would look like: Install Ubuntu 11.10 (or 12.04 if necessary) on a flash drive (from Ubuntu). Refer to the following message from Ubuntu's mailing list if you want to learn more. I would like to create an OS-agnostic installation of Ubuntu on a flash drive, that boots under Ubuntu and under Mac OS X. 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. Try making a fresh table, and using Parted's rescue feature to recover partitions. 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. Perhaps it was corrupted - possibly by a program that doesn't understand GPT partition tables. ![]() 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. Type or paste one of the following commands in Terminal. ![]() Open Terminal, which is in the Utilities folder of your Applications folder. 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: Connect the USB flash drive or other volume that youre using for the bootable installer.
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