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## Related Documentation

- CTPOS and CTPView Software Password Requirements

# Changing a User Password for a CTP Platform

The CTPOS software is installed on a CompactFlash card that normally operates in a read-only state. You must make the card writable in order to change a user password. Only the root user is allowed to make the CompactFlash card writable.

To change a CTP platform user’s password:

1. Log in to the CTP platform as a nonroot user.
2. Enter the command su - to switch to the root account.
3. Enter the following command to make the CompactFlash card writable:

   mfw

4. Open a new SSH window and log in with the username whose password you want to change.
5. Follow the prompts to change the password.
6. Enter the command su - to switch to the root account.
7. Enter the following command to return the CompactFlash card to read-only:

   mfr

| Note: For users who employ the utility SecureCRT for SSH to access the CTP platform, you must change the Authentication method on SecureCRT from the default setting of Password to Keyboard Interactive. If you fail to do so, the password prompts originating at the CTP platform are prevented from reaching your display, and the password update procedure fails.

## Related Documentation

- CTPOS and CTPView Software Password Requirements

#### Published: 2010-10-05

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