How To
Summary
When you receive the new POWER server and start planning your environment, you will find a single Service Partition that can be removed, but it may show this error “HSCL3396 Failed to delete the partition with ID 1 since it is the service partition."
Steps
The Service Partition can be named as the serial number of your new server

To remove that Service Partition, complete the following steps:
Select Resources > All Systems
Select System > Actions > View System Properties
Under Properties, select General Settings
Service Partition > Unassigned
If your system was preinstalled with an operating system, you must exit MDC (manufacturing default configuration) mode so that you can open a console and access your operating system. To exit MDC mode, complete the following steps:
Select Power On Parameters and set the Partition Start Policy to User-Initiated.
After unassigning the Service Partition and changing the Partition Start Policy to User-Initiated, click on Save, then you can remove that Service Partition, then power on the server.

Additional Information
If you are still using the HMC Classic GUI, you may follow the steps in this doc:
HSCL3396 When Trying to Delete a Partition
Document Location
Worldwide
Product Synonym
HMC for POWER
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Document Information
Modified date:
22 September 2021
UID
ibm10885690