OK guys. Very sorry about this. It has just come to my attention this afternoon after some test work that my instructions are outdated. DO NOT Follow the previous article created this morning. What has happened is that apple has decided to deliberately change the way that OS X 10.9 Mavericks is installed. They have changed the configuration method and packaging so that the InstallESD.DMG file which is used by IT administrators to deploy across networks. To perform an easier method of creating a bootable Pen / USB external drive, please use DiskmakerX from http://diskmakerx.com When you have downloaded DiskmakerX 3 from the site, install it to the applications folder. Launch DiskMaker X 3 you'll be asked if you want to download mavericks, If you've already downloaded it from the app store, hit enter on "Not now". DiskMaker X wants to know what OS you want to write to the drive you're going to use, it gives the option of OS X10.7, 10.8 or mavericks. select Mavericks. it will attempt to find the OS installer. if it finds it, it will ask if you want to use the one found, yes. Now DiskMaker X will ask what drive you are going to use. Either a pen drive or a partition created on your external HDD. This is where Disk utility does help at this point as an error can occur where the disk you select might not be recognised because of a partition format type error. I found this out the hard way. TO SET UP A PEN DRIVE! Disk utility has mounted your pen drive, it will need formatting to OS X extended (Journaled). To do this, select your pen drive and go to the Erase tab. There are 2 areas to be set up. 1: Partition type: Mac OS X extended (Journaled). 2: Drive name: Mavericks now tab to the erase button and enter on it. you'll be asked to confirm. OK. TO SET UP AN EXTERNAL HDD If you're going to use an external HDD as a method of installation. do yourself a favour and create a couple of partitions depending on use. to do this, select your external hard drive's ROOT which is in the tree view of "Selected Disks" then go to the "Partition" tab. Create at least 2 or 3 partitions that can be used depending on the disk size. an example. 1TB. create a 20gb drive for Mavericks installer, 2 x 480gb drives for backup and time machine. Partition 1: Mavericks Partition 2: Time Machine Partition 3: Files (or whatever you wish to name it.) Each partition can be selected, edited by name and size. ensure that all 3 partitions use Mac OS X extended (Journaled) partition scheme. Apply changes and your external drive is created. (if your external drive contains data, add a 20gb partition at the end or start of the drive and apply it with the same conditions of Mavericks and OS X extended Journaled. Any other specifications will cause problems. (name won't cause an issue but identify that partition as your OS installer.) After this has done. go back to DiskMakerX 3 and select "another drive" this now finds partitions made. if it finds "Mavericks" as your created drive. select it. now it will want to use admin privileges and will ask for your password. Don't panic if it gets slow. it's using AppleScript throughout. So it will come up with a status window for a while, copying your installer files, etc. Then it will go about setting up extra requirements. Once finished, you'll hear a sound file played and a message saying Completed. you can either donate, open system preferences and change boot option or quit. you'll be presented with a couple of windows, close them. Once again I'm extremely sorry for this error. I was producing this article from a previous article where these changes were still usable before golden master. After that point, the installer package has changed meaning the usual methods we've relied on in the past no longer work. So DiskMaker X is a safe route to use here. it has been reworked to fix a number of bugs. NOTE: if you receive an error when selecting a disk saying it can't use the disk, quit the app, go to disk utility and ensure you have the drive configured correctly. If you select OS X extended only, it's not supported. that is the old style HFS drive method. lew.
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