Samsung I9000 Galaxy S Hard Reset

1. Turn the power off. If your Samsung Galaxy S is frozen, pull the battery out and reinsert it
2. Hold the Volume Down button
3. Press and release the Power button
4. You are now presented with a menu that allows for Fastbook, Recovery, Clear Storage, and Simlock
5. Select Clear Storage by pressing the Volume Down button
6. Press and release the Power button
7. Now simply confirm your decision: Volume Up for YES and Volume Down for NO

If YES is selected, all data including third-party applications will be deleted from your Samsung I9000 Galaxy S. Once the wipe is complete, the phone will reboot to its factory fresh state