Everything you need to know about ClockworkMod Recovery
ClockworkMod Recovery is a custom recovery that allows you to install custom ROMs (aka the Android OS), such as custom Android 2.3 ROMs. It can also be used to wipe data from the phone and install minor updates, such as themes and patches. ClockworkMod Recovery is available for nearly every Android phone, including Android phones such as the Samsung Galaxy S, Nexus One and HTC Desire.
If you cannot boot your phone, you can usually fix it by reinstalling a ROM using ClockworkMod Recovery. You can also using ClockworkMod Recovery to copy files to your phone’s SD card, without having to boot your phone.
Our guide on How To Install Custom ROMs / Android 2.3 from scratch will show you how to install ClockworkMod Recovery onto your phone, as it is a required step in order to install a custom ROM. It takes no longer than a few minutes, and it can be done straight from your phone. It is straight forward and near impossible to brick your phone in the process.