On a case sensitive file system file is different from file.
Usb stick mac os.
How to create a bootable macos high sierra installer drive put the macos high sierra installer on an external usb thumb drive or hard drive and use it to install the operating system on a mac.
If you want to use your usb stick with an apple mac you will need to restart or power on the mac with the usb stick inserted while the option alt key is pressed.
You can now run the operating system as normal and can use this usb drive to boot up your mac if your boot drive fails.
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Before you proceed make sure you have a backup of the flash drive s contents or that you don t care that the data will be erased.
Otherwise call a friend who also owns a mac and ask nicely to use theirs to make the bootable usb stick.
After that transmac will create bootable mac os usb within few minutes.
In the mac app store download the operating system installer.
After that right click the usb drive and select restore with disk image.
This will launch apple s startup manager which shows bootable devices connected to the machine.
This option exists because it matches the traditional behavior of unix and some people might need it don t select this unless you know you need it for some reason.
By default mac os x doesn t use a case sensitive file system.
Next you re going to head on over to the mac app store on a mac laptop or computer.
Os x extended case sensitive journaled.
Creating the bootable os x el capitan installer will erase the usb flash drive you re using.
If your current os installation is still functioning you should be able to get there.
Don t be surprised by the slowness it will take considerably longer to boot the operating system of a usb drive than the pcie ssd installed in modern macs.
Putting the latest greatest macos on a usb stick.
I should get the con out of the way first before getting into the pros.
Point to your mac os dmg or iso file by clicking the add button.