This is based on the IHO recovery but others are similar.
This assumes you are already in recovery, I also highly recommend making at least a Nandroid backup in case something goes wrong (which can happen but shouldn't).
To clean your personal information:
Select “wipe data/factory reset
Select “yes”
To install over a rom without losing data such as updating from 2.0 to 2.01 with a complete rom.
If it is labeled as an update, using this will wipe out your install as it wipes out the system files. Updates should be just put in.
Go to “mounts and storage”
Select “format /boot”
Select “yes”
Select “format /cache”
Select “yes”
Select “format /system”
Select “yes”
Back out of that menu to the main one again and select “advanced”
Select “Wipe Dalvik Cache”
Select “yes”
To wipe clean 100% and install a new rom
Select “wipe data/factory reset
Select “yes”
Go to “mounts and storage”
Select “format /boot”
Select “yes”
Select “format /system”
Select “yes”
Back out of that menu to the main one again and select “advanced”
Select “Wipe Dalvik Cache”
Select “yes”
This assumes you are already in recovery, I also highly recommend making at least a Nandroid backup in case something goes wrong (which can happen but shouldn't).
To clean your personal information:
Select “wipe data/factory reset
Select “yes”
To install over a rom without losing data such as updating from 2.0 to 2.01 with a complete rom.
If it is labeled as an update, using this will wipe out your install as it wipes out the system files. Updates should be just put in.
Go to “mounts and storage”
Select “format /boot”
Select “yes”
Select “format /cache”
Select “yes”
Select “format /system”
Select “yes”
Back out of that menu to the main one again and select “advanced”
Select “Wipe Dalvik Cache”
Select “yes”
To wipe clean 100% and install a new rom
Select “wipe data/factory reset
Select “yes”
Go to “mounts and storage”
Select “format /boot”
Select “yes”
Select “format /system”
Select “yes”
Back out of that menu to the main one again and select “advanced”
Select “Wipe Dalvik Cache”
Select “yes”
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