16. Finalize Upgrade

When you are satisfied that HDP is successfully functioning with the data maintained from the HDP 1.3 or 2.0 cluster, finalize the upgrade.

	Note
	After you have finalized the upgrade, you cannot revert.

Run the following command to open a command prompt with the HDFS user in the HDFS Home directory:
```
runas /user:hdfs "cmd /K cd %HDFS_HOME%\bin"
```
To finalize the upgrade, run the following command:
```
hdfs dfsadmin -finalizeUpgrade 
```