- How to choose a startup disk on your Mac to boot from USB.
- ipod classic reset utility mac.
- versnrepunpecgu.tk - Create an installation disk (USB or DVD) for MacOS X!
The service representatives there may be able to suggest something else that you can try. Ask a local user group for help: Another thing you might consider is contacting your local Macintosh user group.
MacBook Will Not Start Up After macOS Update, How-To Fix
Try Dr. Mac Consulting: You can check out consulting services or call Check whether you have RAM issues: If you have problems immediately after installing random-access memory RAM — or any new hardware, for that matter — double-check that the RAM chips are properly seated in their sockets.
If you still have problems, remove the RAM chips temporarily and see whether the problem still exists. Once if quite enough! Luckily, making a bootable installation of the Mac operating system became a whole lot easier when Apple launched OS X Mavericks back in With that version of Mac OS X, and all versions since, it's been possible to use the Terminal command createinstallmedia to create a bootable installer of the macOS, in this article we'll show you how.
Before we do, we run through getting the installation files. If you already have them you can jump straight to how to make a bootable installer and which createinstall code to use.
How to start up your Mac from a bootable CD/DVD, USB thumb drive or external storage device
If you want to run macOS from an external drive, which is slightly different, read this. There are two main things you'll need to make your bootable install. The whole process shouldn't take very long. We recommend a 12GB or more drive, this may be more than you need, for example, the installer for the beta of Mojave was 5.
Mac startup disk missing
We recommend a Flash memory stick as it will be quicker. If you have data on the drive that you plan to use you will need to transfer it to another drive, or get a new drive, as it will be completely formatted and erased.
Depending on which version of macOS you are running, and the version you want to to install, you will either be able to get the installation files from Software Update in System Preferences, the Mac App Store, or you will have to obtain them from elsewhere. The Mac App Store is probably the easier option, but there can still be difficulties depending on which version of macOS your machine is running, and if you were hoping to grab older installation files that can be tricky - we show you how here getting older versions of macOS. It goes without saying that you will need an internet connection to download the software and you may need it while installing the version of macOS if it needs to check for firmware or confirm your iCloud credentials.
As we said already, how you get the installation files will depend on the version of macOS you are running currently and the version you want the installer for. But stop before clicking to install - you need to copy this installation file before installing on your Mac if you want to have access to it to make the boostable installer. Instructions for that below.