Preparations for the Downgrade on Mac OS X
Before you begin, back up your data to an external storage medium:
- To do this, start the disk utility program.
- Select on the left side of the drive from which you want to make a Backup.
- Click in the right part of the program on the "restore"Tab.
- Then, drag the boot volume in the "source" field and the external hard drive in the "target medium".
- With a click on the "restore" button will launch the Backup.
Mac-OS-Downgrade via Time Machine
The easiest way to Downgrade is via Time Machine:
- To start the program, hold down when you restart the option key ("alt") until the startup Manager appears.
- Here, select the Partition "Recovery". In the following window, click "From a Time Machine Backup to restore".
- Select from the list the drive for the Backup.
- Then you will be shown a list of all available Backups. You are looking for a Backup of a previous Mac Version and start the Backup.
Downgrade: an Alternative to Time Machine
If you are in a Time Machine, no Backup available, or a complete re-install to make want to, need to contacts, calendars, and Mail Accounts are stored, if they are not in the iCloud stored have been.
- First, you export the address book via file > Export> contacts archive.
- Also, the calendar is backed up in this way. The exported. ICS file you can later import via the "Import" again.
- Safari bookmarks easily via the Finder back up. To do this, open option in the menu "Go" and then "Library button". Drag the folder "Safari" on the external hard drive to back up to this.
- To your images to secure, launch iPhoto and iPhoto Library. Select all the images and folders and select "Export to file>".
Mac OS X: to reinstall after backup
After a successful data backup, you can start the Downgrade. In our example, downgrade we from Mavericks to Mountain Lion:
- If you have purchased Mountain Lion, you can find it in the App Store under "purchases". If not, you can buy it in the App Store for about 18 Euro.
- Since you can't install an outdated System to a new, you need about 8 GB or larger USB Stick.
- Then create a bootable USB Stick. You will learn , in a further practical tipof how to do this.
- After you have launched the Mac from the USB Stick, appears the window "OS X utilities". Here, select disk utility.
- Here you can either create a new Partition or the hard drive completely clear.
- Then switch back to the first window, and select "reinstall OS X". The Installation begins and you must select the empty Volume.
- After a successful Installation you should have the System first to the latest version , and then all of the required programs, as well as the Backups of install.
The practice tip is based on Mac OS X Mavericks and Mountain Lion. If you are using iOS 8 are not satisfied, you can also here a Downgrade to iOS 7 to perform. This is what we show you in the next tip.