Some people have been in situations where they would like to repair their hard drives and permissions on systems that they do not have an installation disk for, but do have access to install disks for ...

[Editor’s note: This article is part of our series of articles on installing and upgrading to Lion (OS X 10.7). We also have a complete guide to installing and upgrading to Mountain Lion (OS X 10.8).] ...

New version of Disk Utility can fix "overlapped extent allocation" errors As noted in Knowledge Base article #25770, the version of Disk Utility (10.5.1) included with Mac OS X 10.4.2 can fixed ...

Like Lion (OS X 10.7) before it, Mountain Lion (OS X 10.8) doesn’t ship on a disc—it’s available only as an installer app downloadable from the Mac App Store ...