Dan Frakes at Macworld details the steps for creating a bootable installer disc or drive for Mac OS X 10.7 Lion, which is important especially for Macs that debuted after the release of Lion (as they don’t include a downloadable version of the installer). While nicely thorough and practical, it’s also notable for a hair-raising maneuver to avoid re-installing Mac OS X and zapping your Mac’s PRAM. follow link
Mac OS X Services in Snow Leopard
Mac OS X Services let one application supply its powers to another; for example, a Grab service helps TextEdit paste a screenshot into a document. Most users either don't know that Services exist, because they're in an obscure hierarchical menu (ApplicationName > Services), or they mostly don't use them because there are so many of them.
Snow Leopard makes it easier for the uninitiated to utilize this feature; only services appropriate to the current context appear. And in addition to the hierarchical menu, services are discoverable as custom contextual menu items - Control-click in a TextEdit document to access the Grab service, for instance.
In addition, the revamped Keyboard preference pane lets you manage services for the first time ever. You can enable and disable them, and even change their keyboard shortcuts.
- ExtraBITS for 13 February 2012 (13 Feb 12)
Action-Packed Instructions for Creating a Bootable Lion Install Drive