#How to downgrade mac os to snow leopard mac os x#
#How to downgrade mac os to snow leopard install#
#How to downgrade mac os to snow leopard software#
#How to downgrade mac os to snow leopard download#

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This privacy notice provides an overview of our commitment to privacy and describes how we collect, protect, use and share personal information collected through this site. Pearson Education, Inc., 221 River Street, Hoboken, New Jersey 07030, (Pearson) presents this site to provide information about Peachpit products and services that can be purchased through this site. You’ll find it in the Utilities folder inside the Applications folder on your hard disk (see Figure 1). You repartition a disk with Disk Utility, so let’s start by firing it up. And don’t come crying to me if you lose data. So before you do this, make sure your Time Machine backup or other backup strategy is up-to-date.ĭon’t say I didn’t warn you. It is possible to lose all of the data on your hard disk. Partitioning can go wrong problems can occur. You should never mess with the partitioning on your hard disk without first backing it up. And since I took some screenshots along the way, I can show you how I did it - in case you ever need to.

#How to downgrade mac os to snow leopard mac os x#

Since Mac OS X 10.5 Leopard, Disk Utility has been able to resize and add partitions on the fly without erasing data. That’s where Disk Utility’s repartitioning features come into play.

#How to downgrade mac os to snow leopard install#

I had to install Leopard on my internal drive to test. I couldn’t tell if it was a beta problem or a problem with my weird external boot disk.

#How to downgrade mac os to snow leopard software#

I don’t want to uninstall Snow Leopard from my little MacBook Pro.Īlthough I got Leopard running successfully from an external hard disk on the same computer, more beta software problems ensued. This puts me in a spot, since I’ve been trying to write brief articles about using Snow Leopard. Although it’ll be fixed by the time the software is ready for release, the developer suggested that I work with Leopard until then.

Unfortunately, the beta software isn’t behaving nicely in Snow Leopard. I’m using the computer as a “test mule” for a book I’m writing about some Mac OS software that’s still in beta. I’d done a clean installation of Mac OS X 10.6 Snow Leopard on my new 13-inch MacBook Pro. I found myself in a bit of a predicament the other day. Test away.Mac OS X 10.6 Snow Leopard: Visual QuickStart Guide Once installed, go to System Preferences/Startup Disk, select the new partition and reboot. You might want to make a copy of the installer outside the Applications folder to avoid having to re-download it in the future.

#How to downgrade mac os to snow leopard download#

Download the installer from the App Store and when it starts, point it at the new partition.

Name it something and select Mac OS Extended (Journaled) as the format (step 5). Select the newly created space and hit the + button (step 4). Using the /// at the bottom move it up (step 3) until the size box decrease by about 50 GB. Open Disk Utility, select your hard drive (step 1), then the Partition tab (step 2), and select the partition. By doing this, if you don’t like it you won’t have to go though the revert process.Ĭheck to make sure your applications are compatible.Įl Capitan 10.11 Compatibility information If you like/don’t like it it, you can then remove the partition. One option is to create a new partition (~30- 50 GB), install the new OS, and ‘test drive’ it.