this post was submitted on 07 Feb 2025
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Most SD cards aren't really suitable for the kind of workload an operating system generates (that being mostly random i/o). Make sure to get a reputable A2 (application class 2) rated card, they aren't that expensive but perform way better.
Raspberry Pi themselves launched a card recently, I haven't tried that one but it's probably a good choice too.
I think the Raspberry Pi Linux releases mount things onto a ram drive, so the typical IO doesn't touch the SD Card. But, if you run another OS (which sometimes is the easiest way to get other software running) it tends to just treat the SD Card like an HDD/SSD.
That's definitely not true, Raspberry Pi OS works and acts like a normal Debian installation per default - with root mounted rw and all.
Other than that, there isn't much "treating like an HDD/SSD" going on, it just writes to flash when an application requests it does. If the underlying storage is an eeprom, an sdcard nvme storage doesn't really change anything here.