OS X El Capitan is on the streets, the reviews are in, and this version of Apple’s famed operating system may be destined to show up on more Macs than any other, thanks to an App Store installer that works on Macs as far back as 2007.
There’s just one problem with the El Capitan installer and the Mac App Store download. Once El Capitan is installed, it deletes the installer, so if you have multiple Macs you’d need to download the installer again from the App Store on every Mac. Yes, there’s a better way and it’s free.
Make An Installer Disk
Remember OS X installers? Unfortunately, I’m old enough to remember when installers came on floppy disks, so those that eventually made it to CDs and then DVDs were much beloved. Until the Mac App Store downloads came along.
Don’t get me wrong. Simply clicking a button and waiting for an installer to download is the way to go. The only thing better would be if OS X just did all that upgrading in the background and stuffed a note into Notification Center when it was done.
Mac users who want and need and see the value in having a bootable OS X installer disk will appreciate DiskMaker X, the free and easy way to create a standalone OS X installation. Easy? Watch this.
The first thing you have to do is get ready for DiskMaker X. That means downloading the OS X installer (whether OS X Mavericks, OS X Yosemite, or OS X El Capitan) and either, 1) rename the installer so it does not delete itself after the install, or, 2) run DiskMaker X before installing the new OS X on your Mac.
DiskMaker X is an AppleScript app which uses Spotlight to find the OS X installer on your Mac and then walks you through a menu to create a bootable installer disk (like an external USB disk, or a flash disk). That way you can simply plug in the installer to any Mac and do the upgrade or a fresh installation.
Easy peasy. And free.