How do I securely delete data from the machine?

If your going to sell the machine this link will assist in gettiing all your data off How to erase and install Snow Leopard 10.6 I don't know what you want exactly, but I'll give you the links. See #8 Reinstall Just OS X for that then Software Update to 10.6.8Īnother method is to wipe the entire drive or boot partition, then install 10.6 from the disk, then you don't have too Software update to 10.6.8 to get all the bug/security fixes if you don't want too. However you will need to Software Update, because your Apple related support files have been changed. Now there are two ways to resinstall OS X, one way is to write say 10.6.8 over with 10.6.3 or 10.6.4 via the disks, and only 10.6 is overwritten, not your third party programs (most) and not your files. So if you want to reinstall 10.6.4 specifically, it would have to be the machine specific disks if your Mac orignally came with 10.6.4, else you will be force upgraded to 10.6.8 from any 10.6 version. So if your machine originally came with 10.5.x something and you upgraded via the 10.6.3 white retail disk, if you Software Update, you can't get to 10.6.4, it will just bring you to 10.6.8.

No choice to stop at 10.6.4 exactly.ġ0.6 is the Snow Leoaprd operating system, 10.6.3 or 10.6.4 or 10.6.8 is the updates to 10.6 that also occur when you run Software Update under the Apple menu. However if you Software Update, Apple will bring your machine up to 10.6.8 automatically, with all the security and bug fixes. Only if you have 10.6.4 on machine specific disks that came with your computer (or you can call Apple for the disks)

Cleaner mac 10.6.8