Updating my mac
Press and hold the power button to turn off the Mac.2. You’ll need to click the Wi-Fi symbol located at the top-right of the menu. You can now download the most current version of mac OS and install!
Press and hold the power button to turn it back on.3. Select “Reinstall OS X” or “Reinstall mac OS,” and the on-screen GUI menu will guide you through this.
Look over at the status of “mac OS Software Update” to see whether the update servers are working as they should.
Click the Apple menu - File Vault,” then click “Turn Off File Vault.”Now, try updating mac OS again, and it shouldn’t be interrupted.While mac OS is a very robust operating system, sometimes there can be hiccups when performing system updates.In my case, the progress bar stopped and stayed that way for a few hours.Sometimes the update could be stuck in a lull but not completely frozen.Some update processes will take much longer than others, resulting in a seemingly stuck progress bar.