I already have 10.10.2 installed and running on my MacBook Pro (2008 4,1). However, I would like to reinstall/refresh Yosemite (-but not a 'clean' reinstall that wipes everything). Whether from the App Store or the Recovery Partition, the reinstall/refresh process never completes, even leaving computer alone for 24+ hours. Step 2: Make the Drive a Yosemite Boot Installer. In a single command you'll create the bootable install drive. To do this, launch Terminal and enter the following command. Note, this assumes that you haven't moved the installer out of your Applications folder. If you have, simply replace '/Applications' with the location of the.

1. Yosemite Install Disk
2. Create Yosemite Install Disk
3. Create Yosemite Install Disk

Many users don’t know how to use diskmaker X. in fact, this software is very easy to use. It only takes a few steps to make Yosemite and install U disk. After downloading, double-click the DMG file to see the following interface. Diskmaker x is the same as ordinary OS X applications. We just need to drag diskmaker x to the application folder. The following editor will give you a detailed introduction to the tutorial of making Yosemite installation U disk by diskmaker X.

Yosemite Install Disk

Step 1: Download diskmaker X. the editor provides a link to the Chinese version of diskmaker X

Step 2: double click to start diskmaker X. in the first interface, the software will ask which system installation U disk needs to be made. Currently, it supports 10.8, 10.9 and 10.10. Select Yosemite (10.10).

Step 3: diskmaker x will automatically detect Yosemite installation files. If it has been downloaded through the MAC app store, diskmaker x will be found in the application folder. If you download from the Internet disk, you can use use another copy to locate the Yosemite installation file manually.

Step 4: then, we need to choose to install U disk. Diskmaker x supports U disk and other external storage. A U disk with a capacity of 8GB is enough.

Step 5: then diskmaker x will list all the drives connected to the Mac, and select the U disk you insert. Be careful not to choose the wrong one. Diskmaker x will format the U disk.

Step 6: after the selection, confirm the U disk to be formatted again. Then select erase then create the disk to format and create the installation U disk.

Step 7: diskmaker x will prompt for administrator permission, and then just enter the password.

Create Yosemite Install Disk

Step 8: the rest is a long time. Diskmaker x will automatically start the creation process of Yosemite installation U disk. The creation time is related to the speed of copying files to USB flash disk. As long as you wait patiently, you can see that a window will appear behind diskmaker X and the files will be copied automatically.

Create Yosemite Install Disk

After that, diskmaker x will pop up a prompt. At this time, we can restart the Mac, press and hold the option button, and select the Yosemite installation U disk that has just been made.