How do you boot your Raspberry Pi ? The vast majority of us will use a microSD card, some may use a USB drive as a boot device. With the Raspberry Pi Compute Module 4 we saw a PCIe 1x slot appear on the official carrier board and intrepid hackers such as Jeff Geerling have been pushing what this board can achieve. In Geerling’s latest video he tests out recently announced beta instructions for booting a Compute Module 4 directly from NVMe. As Geerling points out in the video, NVMe boot was quietly announced just a couple of weeks ago and is still in beta. The instructions are likely to change ready for official support to start. Geerling installed Raspberry Pi OS to a Western Digital Black SN750 500GB SSD and proceeded to benchmark the drive against a fast micro SD card, and the Compute Module’s onboard eMMC flash. Boot times across all three were pretty close, an example of how finely tuned the Linux boot process has become. Where Geerling saw marked improvements was in typical day to day operations such as open and closing applications and file copy operations which saw NVMe storage offering up to a 44%… Read full this story
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