Run Disk Utility from the Mac OS X update, not the installation disc?

I have a message when I run Disk Utility that says I need to repair the hard drive volume. Fine. Then I read the Apple support note below that says to repair from the update not the install disc. Fine. But no where does Apple tell me how to create a bootable disk from the updated OS version. Help?

Please don't post on how to create an iso/dmg. I know how. Please don't post on reinstalling the OS. That's not my question.

My question is how to get the updated version of my OS onto a disk drive (preferably a flash drive) that's bootable and includes Disk Utility in its updated version?

Thanks!

"When possible, disk permissions should be repaired while started up from a Mac OS X volume (hard disk) that contains Mac OS X, instead of a Mac OS X installation disc. Mac OS X software updates may change permissions on some files to improve security. When this occurs, the version of Disk Utility on the Mac OS X volume is updated to account for the new permissions. Running Disk Utility while started from the Mac OS X volume ensures that the changes made by software updates are preserved."