A configuration change is not applied until the affected slot is disabled and enabled or the switch is rebooted. The port will be removed from all VLANs including "default" vlan. The following is prompted when the command is entered:
X770-32q.17 # configure ports 1 partition 4x10G
Warning: Configuration will be lost on ports 1
No configuration changes should be made on these ports until after
the next reboot.
This command will only take effect after save configuration and reboot.
Are you sure you want to continue? (y/N)
Port partition information can be verified using the following the show port <#> information detail
X770-32q.18 # show port 1 information detail
PTP Configured: Disabled
Time-Stamping Mode: None
Configured Port Partition: 1x40G
Current Port Partition: 1x40G