


Try making a fresh table, and using Parted's rescue feature to recover partitions.Warning: The driver descriptor says the physical block size is 2048 bytes, but Linux says it is 512 bytes.All these warnings are safe to ignore, and your drive should be able to boot without any problems.Refer to the following message from Ubuntu's mailing list if you want to learn more. 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. You can now quit Terminal and eject the volume.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.A consequence of this enhancement is that some programs, like parted get confused about the drive's format and partition table, printing warnings such as:/dev/xxx contains GPT signatures, indicating that it has a GPT table. When Terminal says that it's done, the volume will have the same name as the installer you downloaded, such as Install macOS Monterey.After the volume is erased, you may see an alert that Terminal would like to access files on a removable volume.Terminal shows the progress as the volume is erased. When prompted, type Y to confirm that you want to erase the volume, then press Return.Terminal doesn't show any characters as you type.

When prompted, type your administrator password.If the volume has a different name, replace MyVolume in the command with the name of your volume. Selected the download Lion dmg from said sketchy site, let it do its thing for 30 mins then went to use the drive to boot os. Opened transmac as admin, and right click to select image to flash. Each command assumes that the installer is in your Applications folder, and MyVolume is the name of the USB flash drive or other volume you're using. Used diskpart, list disk, selected the USB drive, clean, convert gpt, create partition primary. Type or paste one of the commands below into Terminal, then press Return to enter the command.Open Terminal, which is in the Utilities folder of your Applications folder.Plug in the USB flash drive or other volume that you're using for the bootable installer.
