I'm well aware that Garmin, Sketchup and One Password are not Apple software. What i want to know is this; Since I purchased OS 10.7.4 before my MacBook difficulties but lost it while restoring my Mac Book to working order, can i re-install OS 10.7.4 again without chrage? How did I do the re-install?
Reinstalling would have been easy had you not restored to such an old backup. I suspect that Lion's recovery partition was removed by restoring to 10.5.8, meaning that the only way to reinstall would be to upgrade to 10.6.6 or later, then re-download Lion from the App Store. (Anything you purchased in the App Store can be re-downloaded for free by simply logging in with the same Apple ID that you purchased it with.)
Yes, but you will need to first install Snow Leopard 10.6.8 to access the App Store and re-download Lion unless your hard drive still has a Recovery HD partition from your original Lion installation. If it does then you can do this:
Install or Reinstall Lion from Scratch
If possible backup your files to an external drive or second internal drive.
Boot to the Recovery HD:
Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Erase the hard drive:
- Select Disk Utility from the main menu and click on the Continue button.
- After DU loads select your startup volume (usually Macintosh HD) from the left side list. Click on the Erase tab in the DU main window.
- Set the format type to Mac OS Extended (Journaled.) Click on the Erase button and wait until the process has completed.
- Quit DU and return to the main menu.
Reinstall Lion: Select Reinstall Lion and click on the Install button.
Note: You will need an active Internet connection. I suggest using Ethernet if possible because it is three times faster than wireless.
I have an Snow Leopard install disk but have not been able to reinstall Snow Leopard. Everytime I attempt an install Snow Leopard I get a message that reads "Mac OS cannot be installed on hardrive because this disk cannot be used to start up your computer" and I can't proceed with the install. Why can't I install Snow Leopard?
To install Snow Leopard you have to first erase the hard drive. You cannot install Snow Leopard over your existing Lion system.
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 (see below.) I suggest you make a separate backup using Carbon Copy Cloner 3.4.1.
If you have Snow Leopard Time Machine backups, do a full system restore per #14 in Time Machine - Frequently Asked Questions. If you have subsequent backups from Lion, you can restore newer items selectively, via the "Star Wars" display, per #15 there, but be careful; some Snow Leopard apps may not work with the Lion files.