Do you want
- reinstall Lion, or
- repair the disk using Disk Utility, or
- restore from a Time Machine backup, or
- browse the web with Safari
just using an USB drive???
Just download the Lion Recovery Disk Assistant and you can make a useful USB drive that can help you when you cannot start your computer or you have replaced the hard drive with a new one …
All you need have: a Mac running OS X Lion with an existing Recovery HD and an external USB hard drive or thumb drive with at least 1GB of free space and you can restore system software to your Mac with just a few clicks, without having to bother with install discs or drives …
Please note: If the computer shipped with Lion, the external recovery drive can only be used with the system that created it, but if the system was upgraded from Mac OS X v10.6 Snow Leopard to Lion, the external recovery drive can be used with other systems that were upgraded from Snow Leopard to Lion.
Just check the following links below:
Built right into OS X Lion, Lion Recovery lets you repair disks or reinstall OS X Lion without the need for a physical install disc. Since Lion Recovery is built into your Mac, it’s always there when you need it. Even if you don’t need it, it’s good to know it’s there. And you don’t have to search through original packaging to find install DVDs to get your Mac back up and running.
Command-R to the rescue
Just hold down Command-R during startup and Lion Recovery springs into action. It lets you choose from common utilities: You can run Disk Utility to check or repair your hard drive, erase your hard drive and reinstall a fresh copy of Lion, or restore your Mac from a Time Machine backup. You can even use Safari to get help from Apple Support online. And if Lion Recovery encounters problems, it will automatically connect to Apple over the Internet.
Do you want make a really Permission Repair on you Home Folder?
Restart your Lion holding down Command and R keys (before you hear the chime). Lion Recovery will start, so you will see Repair Utilities screen.
Find Utilities item in the Menu Bar and select Terminal program.
Type resetpassword in the Terminal window and hit Enter.
A new window will appears: this the Password Reset Utility window.
You can reset any user password on your computer here, but we are here now for other reason!
Find your Mac hard disc icon at the top of this window and click on it.
Select your account from drop down menu above it.
Find Reset Home Directory Permissions and ACLs area on this window.
Click the reset button there and wait a while until the reset process is working.