Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

Anyone know how to uninstall Lion and reinstall snow leopard without having to pay the $29?

Ever since I purchased and downloaded Lion I have been having problems (applications not running properly or not at all and the computer locks up like every 10 minutes resulting in me having to restart) and want to go back to snow leopard until I feel comfortable that Lion is ready to go.

15" MACBOOK PRO i5, Mac OS X (10.6.4)

Posted on Jul 30, 2011 4:50 PM

Reply
Question marked as Best reply

Posted on Jul 30, 2011 4:52 PM

Downgrade Lion to Snow Leopard


1. Boot from your Snow Leopard Installer Disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu.


2. After DU loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Note the SMART status of the drive in DU's status area. If it does not say "Verified" then the drive is failing or has failed and will need replacing. SMART info will not be reported on external drives. Otherwise, click on the Partition tab in the DU main window.


3. Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Set the format type to Mac OS Extended (Journaled.) Click on the Options button, set the partition scheme to GUID then click on the OK button. Click on the Partition button and wait until the process has completed.


4. Quit DU and return to the installer. Install Snow Leopard.


This will erase the whole drive so be sure to backup your files if you don't have a backup already. If you have performed a TM backup using Lion be aware that you cannot restore from that backup in Snow Leopard. I suggest you make a separate backup using Carbon Copy Cloner 3.4.1.

16 replies

Dec 30, 2011 8:23 AM in response to jjhall

Hi JJ,

Hope you can help. I followed your instructions to get downgrade to SL. However when I go into Time Machine and try to restore to a date previous to the Lion install files download. The only thing I was not sure of when I did this was where I partitioned the file, I named it Mac HD SL so I would know the difference. Can you please give me some guidance on how to get my data back. I'm using a WD EHD and I back up using TM. Thanks so much!

Anyone know how to uninstall Lion and reinstall snow leopard without having to pay the $29?

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple ID.