#Flash Sierra Mac OS X 10#

Flash Sierra Mac OS X 10

In Mozilla, choose Tools > Downloads. If you are using Mac OS X 10.7 (Lion), click the Downloads icon displayed on the browser. In Safari, choose Window > Downloads.

Step One: Format Your External Startup DiskIn order for your external deviceВ to function as a startup disk, it must be formatted as Mac OS Extended and employВ a GUID partition map. Make sure you click вЂњDownloadвЂќ and let it save to your MacвЂ™s hard drive.While that downloads, you can move onto the next section andВ start getting your external deviceВ ready. You can download the Sierra installer in the App Store by searching for вЂњmacOSвЂќ.

Click вЂњDoneвЂќ to continue.Now, youвЂ™re ready to install macOS Sierra on your external device. You can also give your device an appropriate name, if you want.В ThenВ click вЂњEraseвЂќ.When the operation is complete, you will see the following message. If there is anything you want to save, make sure you back it up first!Once the drive is unmounted, select the full disk in the left sidebar (labeled вЂњUFD 3.0 SiliconвЂќ here)вЂ”not the sub-disk(s) under it (labeled вЂњUntitledвЂќ here)вЂ”and click вЂњEraseвЂќ in the top row of buttons.From the resulting dialog, format your device as вЂњMac OS Extended (Journaled)вЂќ and use the scheme вЂњGUID Partition MapвЂќ. In our case, our drive is partitioned using Master Boot Record rather than GUID.В So, weВ definitely need to format it.WARNING: Before proceeding, understandВ that formatting will obviously erase everything on yourВ device. Disk Utility can be found in the Applications > Utilities folder or by searching for it using Spotlight.Once Disk Utility is running, click on your external device in the left-hand pane and check the partition map.

But you donвЂ™t want it looking for that external drive every time you turn your Mac on normally.Like we said, an external macOS installationВ will probably be pretty slow and youвЂ™re probably only going to want to use it when the situation calls for it, such as if youвЂ™re having trouble with your internal drive or you want to use your portable macOS Sierra installation on another compatible Mac. It will probably be pretty slow and youвЂ™re probably only going to want to use it when the situation warrants, like when youвЂ™re troubleshooting your Mac. Step Three: Change Your Startup DiskNow, your MacВ will automatically boot to your external drive every time you start your computerвЂ”but you probably donвЂ™t want that. Make sure you save any work and then click вЂњClose Other ApplicationsвЂќВ to continue.Once your Mac restarts, it will take about 15 more minutes to finish, and will then boot automatically from the new device.You will then need to go through the usual macOS setup, including enablingВ Siri, setting up your time zone, and adding your user account.Once youвЂ™re done with all that, youвЂ™ll have a brand new installation of macOS Sierra on your external device.Make sure you donвЂ™t remove or eject your external device while youвЂ™re using it, since macOS will periodically need to access it. Feel free to grab a cup of coffee orВ take a shower, because it will take a few minutes.Before macOS can complete installation, your computer will need to restart. Double-click the installer to begin.вЂњAgreeвЂќ to the software license agreement.On the next screen, click вЂњShow All DisksвЂќ.Choose your newly formatted external device and click вЂњInstallвЂќ.Enter your system password and hit Enter.MacOS Sierra will now begin installing on your external device.

(Or you can hold Option and boot to the external drive again, if needed.)RELATED: Know Exactly What's in Your Mac with the System Information UtilityThatвЂ™s all there is to it. The next time you restart that Mac, it will boot to main, internal hard drive as normal. From there, you can select your external drive and click the arrow to boot into it for that session.YouвЂ™ll boot into your macOS Sierra installation where you can use it as normal. Or maybe you want to use your portableВ macOS installation on another compatible Mac.To boot from your external Sierra drive, plug it into the Mac in question, press the power button, and hold the вЂњOption key untilВ the recovery disk screen appears.

Flash For Mac Sierra