This is unlike the SD → SDHC transition that *did* change the commands (from byte offsets to sector offsets). However, the physical layer remained unchanged, which also means that true SD hosts support SDHC and SDXC with the right firmware/drivers.
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That means PCI readers, e.g. in many laptops, should work with all cards, especially with Linux. USB legacy SD readers won't work, as they do the conversion in firmware (that typically cannot be updated or nobody has bothered).
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Ah good, I'd always wondered why they'd changed it since SDHC was meant to support 2T cards, default format does explain things.
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FAT32’s 4GB file size limit would put quite a damper on what people want to do with SDXC cards (namely, video)
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On the other hand, exFAT is patented.
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Today I learned a thing, thanks!
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I mean, that wasn't bullshit at all though, because it saved tons of regular-ass people from buying SD cards and finding out that they can't format them / the size is wrong / etc because their device doesn't grok exFAT
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It's actually a pretty fucking brilliant move tbh
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