Gparted doesn't recognize the disk type as a MAC address.
Gparted doesn't recognize the disk type as a MAC address.
You’re facing an issue where the system can’t detect your Linux disk during dual boot, preventing formatting with gpart. You have two options: either switch to macOS and use Disk Utility, or proceed with Linux. If you choose Linux, you’ll likely need to format it as ExFAT, which is compatible with macOS and many Linux distributions.
Use Disk Utility on macOS to reduce the size of your macOS partition and create some extra free space for a Linux partition. Then launch the Linux installer, choose the desired partition or free area, and format it with EXT4. Don’t worry about boot loaders—just follow the steps in the installer.
exFAT is suitable for this task since you plan to convert it to EXT4 later on in Linux.
ReFind might be enabled on your system, which could lead to some issues—but there are ways around it. Keep in mind that OS X updates often reset ReFind, so you may need to disable its EFI entry or stop it from starting automatically. If you're lucky, you can boot into ReFind using the Opt key, though I haven't tested that method. This is why I chose to install it directly from OS X, making future reinstalls easier if access to the Linux version is limited.