Mac computer system can not boot system how to solve

Apple Mac computer system can not boot system how to solve

The first step: Prepare for work

1 due to the introduction of the production method, need to be done on the Mac computer, so if your current Mac is broken, you need to find another Mac system that can be used normally. First we need to download an official image file to restore the Mac system, which, for example, can be downloaded free of charge in the App Store on the Mac at the current Yosemite system. After the download is complete, you will need to use this file later and copy it to another location to save it.

2 Next, we also need to download a USB disk running on the installation of a U-machine software: DiskMaker X

3 after the download completes DiskMaker X, you can drag it directly into the application directory after running, as shown in the figure

The second step: the Boot making U disk installation system

1 Next Run the DiskMaker X software just installed, you can select the OS system version, here take 10.10 as an example, as shown in the figure

2 Then click the Select an Install file button to continue, as shown in the figure

3 Next Please select the Mac OS installation files that were prepared before, as shown in the following figure

4 will then prompt us to need a U disk not less than 8GB, insert a U disk on the MAC, click an 8GB USB thumb drive button to continue, as shown

5 in the selection of good to use the U disk, you will be prompted to format the U disk (lost all the data on the original U disk), and then create a boot disk. Click the Erase then Create the disk button to continue.

6 then please wait patiently for the production, as shown in the following figure, you will generally see such a window, you can ignore it.

7 when the recovery of U disk production to a certain time, will automatically pop-up file window. As shown in the following illustration, you will see a Packages window on a U disk, which is used to store the file directory for installation startup.

8 In addition, if we open the U Disk Properties window, you can see that the empty capacity will always be changing, the space occupied is increasingly small, indicating that the production tool is written to the inside data.

9 when the completion of the production, you will see such a window, this time the U disk installation system has been completed.

10 then you will see the DiskMaker X Final Completion window, click the Quit button to exit.

Step three: Use the made USB disk to restore the MAC system

For Mac recovery System of the U disk after the production, then the U disk inserted to restore the Mac computer, the power-on and press the ALT key on the keyboard, until you see the boot Disk selection interface, and then choose U Drive installation system can be.

Next when you choose to install the disk, do not choose the wrong, please select the Macintosh HD typeface, as shown in the figure

3 then wait to slowly install the system, after the installation is complete, reconfigure the login system.