If you are getting the "Repartition Operation Failed" error while using HOME_CSC , switch to the file. This will factory reset your device, but it is often necessary to clear the partition conflict. Summary Checklist
If the operation fails immediately, your phone’s security might be blocking the write command. repartition operation failed odin
Use a USB 2.0 port if possible. USB 3.0 ports are known to cause communication "hiccups" with Odin. If you are getting the "Repartition Operation Failed"