Re:Upgrade Raspberry Pi 4 with a NVMe boot drive
by mmastrac on Monday November 23, 2020 @01:14PM
(#25189733)
FWIW I have not had any SD corruption issues after 1) using name-branded cards and 2) ensuring that I feed each Pi w/5.2V. In the end I bought a commercial 5V power supply, tweaked it up 5% and wired directly to the 5V pins on the Pi.
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Re:Upgrade Raspberry Pi 4 with a NVMe boot drive
by magicalhippo on Monday November 23, 2020 @02:35PM
(#25190718)
I'm running several Pi's from SD card, some for years, and the only issue I had was with one that randomly crashed.
Measured the resistance of the "USB charging cable" I had used for it and found it was 1 Ohm! So when the Pi peaked at 1A current draw, the cable dropped 1V.
Swapped it out for something proper (<0.1 Ohm), and haven't had issues since.
Re:Upgrade Raspberry Pi 4 with a NVMe boot drive
by mmastrac on Monday November 23, 2020 @02:45PM
(#25190831)
Same here. I even went as far as finding barrel-jack to USB connectors so I could wire thicker-gauge cables to the Pi.
In the end I gave up on trying to find low-ohm cables and just wired directly to the power supply. It's surprising how many cables just plain suck.