dopastudio.blogg.se - Install macos sierra usb

#INSTALL MACOS SIERRA USB MAC OS X#
#INSTALL MACOS SIERRA USB INSTALL#
#INSTALL MACOS SIERRA USB UPGRADE#
#INSTALL MACOS SIERRA USB DOWNLOAD#

The format operation may take several minutes to complete.

Click the “Erase” button in the warning popup dialog if you get one.

Click the “Erase…” button at the bottom.

Select “Master Boot Record” for “Scheme”.

Select “Mac OS Extended (Journaled)” for “Format”.

Input a name like “Sierra” (this name will be overwritten later).

Click on the “Erase” tab (or button at the top).

On the left-hand pane, select the USB drive (not the partition under it, if any).

Plug the USB flash drive into your Mac.

Because I am paranoid, I recommend reformatting the USB flash drive manually anyhow.įormat the USB flash drive using these steps: This is because the script we run to create the bootable drive will reformat the flash drive as an initial step. Note: If the flash drive is mounted under “/Volumes” successfully when you plug it in, you can skip the following steps to reformat the flash drive. The macOS Sierra installer takes up 5.1GB of space on the USB flash drive, so you will need a flash drive with a capacity of 8GB or greater. # hdiutil: verify: checksum of "/Applications/Install macOS Sierra.app/Contents/SharedSupport/InstallESD.dmg" is VALID # If successful, the last output line should read: Hdiutil verify /Applications /Install\ macOS\ Sierra.app /Contents /SharedSupport /InstallESD.dmg Launch the “Terminal” application and run this command to move the downloaded installer to your user’s “Downloads” folder: To keep that file, you will want to move it out of the Applications folder so it won’t be deleted after an upgrade.

#INSTALL MACOS SIERRA USB UPGRADE#

Note: If you run the macOS Sierra installer to upgrade your Mac, the downloaded file will be deleted automatically after the upgrade is completed. It will save the installer as an “/Applications/Install macOS Sierra.app” file (about 4.97GB in size).

#INSTALL MACOS SIERRA USB DOWNLOAD#

Run the “App Store” application, search for “macOS Sierra”, and download it. The macOS Sierra installer is available from the Mac App Store. The best advice for installing macOS Sierra is to try again and be very patient (if you expect an operation to complete in 5 minutes, then give it at least 50 minutes). Note: The macOS Sierra Disk Utility and installer appears to be more buggy and much slower than previous versions.

#INSTALL MACOS SIERRA USB INSTALL#

Below are the steps I took to create the bootable USB flash drive and how I used it to install macOS Sierra.

#INSTALL MACOS SIERRA USB MAC OS X#

Though, if your Mac is based on Apple Silicon, you may find incompatibilities.To perform a clean installation of macOS Sierra (basically, Mac OS X 10.12), I recommend using a bootable USB flash drive containing the macOS Sierra installer. In theory, there’s no reason why you couldn’t boot an older version of macOS, and Apple does offer ways to install older versions on a USB. Can I boot older versions of macOS from a USB drive? Our testing gave us no issues when using a USB 2.0 to USB-C connector, so you’re able to press your older USB drives into service. Am I able to use a USB connection other than USB-C? We recommend 16GB to give yourself enough “wiggle room” when it comes to the installation process. As such, you’ll need a large enough USB drive to store Big Sur. In our experience, you will not be able to do this. Can I split an installation across multiple USB drives? Disk operations on the boot drive can be performed safely from a USB stick as well. You can now run the operating system as normal and use this USB drive to boot up your Mac. If you’re using an Apple Silicon machine, you’ll need to insert the USB drive, shut the Mac down, then reboot and hold the Power key until you come to the Startup Manager.įor Intel Macs, restart and hold the Option key to enter into the boot selection dialog.įor both types of machines, use your keyboard’s arrow keys to select the USB drive from the list of bootable devices, click to confirm, and your USB drive will begin to boot. You could also use the Startup Manager to select your boot drive when you start macOS. Your Mac will reboot from the USB instead of your default startup disk.