Install OS X 10.10 using the USB flash drive as the boot disk

1. Select a USB flash drive with a storage space larger than the Yosemite system (approximately 5.1G or so), partition the disk with disk Utility, and partition the USB drive with reference to this link

2. Link: http://pan.baidu.com/s/1hqDuJHi password: lpxf, download OS X 10.10 here

3. After downloading OS X Yosemite 10.10 MAS 14a389.dmg Complete, double-click, do verify, do not skip this step, after completion appears as:

4. Right button ' Install OS X Yosemite ', display package contents, CONTENTS->SHAREDSUPPORT->INSTALLESD.DMG, double click this file, continue verify

5. When finished, also refer to this link in 1 steps to write the INSTALLESD.DMG to the USB flash drive. When you are finished, the production boot USB drive is complete and the next step is to install the Yosemite system to the Mac machine you need to install using the boot USB drive. INSTALLESD.DMG Mount successful, there will be a basesystem.dmg file, What is the function of it? How to mount it on disk utility (double-click is not supported): Enter command line Hdiutil mount-plist-noverify-noautofsck-nobrowse/volumes/ Os\ x\ install\ ESD/BASESYSTEM.DMG, the completion of the mount. If you want to install it on a USB stick, repeat the InstallESD.dmg method.

6. Restart the Mac machine, and long press the option key, use Disk utility way, first need to repartition the hard disk of this Mac machine. The system on the USB flash drive is then burned onto the hard drive. If this error is reported when partitioning the hard drive: couldn ' t unmount disk, this is because of a problem with USB boot drives, the workaround is: Restart your Mac, and press and hold COMMAND + Option + R over the Internet Recovery Mod E to resolve this issue.

Install OS X 10.10 using the USB flash drive as the boot disk