@mfmayes49 said in imager not working right:
Retropi imager
You mean Raspberry Pi Imager ?
Can you explain in more detail what you're doing and what's not working according to your expectation ? It's not quite clear how a SD card can 'grow' from 128Gb to 300Gb. Does this have anything to do with RetroPie or is just a Raspberry Pi Imager related question ?