How to change partition name in OpenCore boot picker?

Hi everyone! I decided to Hackintosh my laptop recently and, with the help of a friend, I got it working! One little thing though - after installing macOS, I changed the name of the partition (both "[partitionName]" and "[partitionName] - Data"), but the OpenCore boot picker still shows the old name. My friend told me to try running sudo diskutil apfs updatePreboot / - I did that, and it said something along the lines of 'operation complete'. But then I rebooted and I still see the old name in the OpenCore boot picker. How can I get it to change?