Okay, Lets See how to create bootable USB of Yosemite ( OS X 10.10 ) .
Requirements
- Working MacOS Operating System
- OSX Yosemite DP1 Application ( Require Developers account to download )
- 8+ GB of USB drive ( 16GB is good )
- Time
Okay Now Steps
- Right click on “Install OS X 10.10 Developer Preview” and click show package contents
- Go inside “Contents/Shared Support ” Folder
- Click on “InstallESD.dmg” it will mount that
- open terminal and type
defaults write com.apple.finder AppleShowAllFiles TRUE killall Finder
Now open finder and open “OS X Install ESD” image ,
5 . Right click and open “OS X BaseSystem.dmg” image
Lets , Prepare USB
Insert USB drive and open Disk Utility
Now Partition USB with
Partition map : Master Boot Record
Format : Mac OS Extended (Journaled)
Now lets restore “OS X Base System ” To USB
Source : OS X Base System
Destination : USB
Now you will have “TWO” OS X Install ESD Open USB ( Hint : Click On Mount Point Of USB in Disk Utility )
and Rename That to “USB”
- open That USB and Go to “System/Installation/”
- and delete “packages” symlink
Copy “Packages ” Folder From “OS X Install ESD ” and paste that into “/USB/System/Installation/” Folder
Now Go to “OS X Install ESD ” and Copy “BaseSystem.chunklist ” and “BaseSystem.dmg” files both are hidden
Paste that into Root OF “USB” ( paste this commands to do that )
cp -rv /Volumes/OS\ X\ Install\ ESD/BaseSystem.* /Volumes/USB/
Install Bootloader
Download Chameleon Bootloader : http://www.osx86.net/files/file/4074-chameleon-r2380-os-x-1010/
Open that Chameleon Installer and Change Installation Location Drive TO ” USB “
After Installation Open “/USB/Extra/org.chameleon.Boot.plist” and Adjust setting according your Motherboard Requirements . and in kernel flags add
“kext-dev-mode=1” without quotes
Now Reboot and choose USB as your first drive . and install Yosemite .
