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## Prepare to Use the `FCode` Utility

Perform the following procedure from an `xterm` or an equivalent terminal window that supports scrolling.

Note - `FCode` commands produce large amounts of detailed output. An `xterm` and `gnome` terminal windows provide scroll bar functionality, which helps view such output.

1. Either apply power to the system or reset the system if power is already present and disable auto-boot in OBP.

   See Display the `ok` Prompt.

2. Enter the OBP environment.
3. Use the `show-devs` command to list the device paths on the server.

       {0} ok show-devs
       ...
       /pci@400/pci@1/pci@0/pci@4/scsi@0
       /pci@400/pci@2/pci@0/pci@4/scsi@0
       ...

   Note - For a server module, the device path might be `/pci@400/pci@1/pci@0/pci@2/LSI,sas@0`.

4. Use the `select` command to choose the controller where you want to create a hardware RAID volume. For example, on the SPARC T4-1:

       {0} ok select /pci@400/pci@2/pci@0/pci@4/scsi@0

   Note - The device path in the above example is not valid for all SPARC T4 series servers.

   Instead of using the entire device path for the controller, you can use a preconfigured alias for a controller. For example:

       {0} ok select scsi_alias

   where scsi_alias corresponds to the preconfigured alias for your path.

   Note - To view the preconfigured aliases on your server, use the `devalias` command. See Locate Device Paths.

   Display the SAS addresses of any connected drives using the `show-children` command.

##### Related Information

- Display the `ok` Prompt

- `FCode` Utility Commands

- Locate Device Paths

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