The regular Raspberry Pi 4 doesn’t come with any onboard storage, but you can put a high-capacity microSD card inside or even boot your Raspberry Pi from a USB SSD. If you get a Raspberry Pi Compute Module 4, you can opt for 8, 16 or 32GB of onboard eMMC storage, but what if you need more?
Raspberry Pi Fan Ivan Kuleshov came up with a unique and compelling answer. To get more onboard storage, the systems engineer installed a 128GB eMMC module onto his Raspberry Pi CM4.
“I did it," Kuleshov tweeted earlier today, "Now I have Raspberry Pi CM4 with 128G[B] eMMC Onboard.”
Kuleshov didn’t say a lot about his method for adding the extra memory, apart from sharing some images on Twitter of his process, with the CM4 under a microscope. There’s no image of a soldering iron but it appears that he removed the previous eMMC memory with a heat gun and soldered on the new one.