Answer by danielcg for How to make sdcard (really) read only?
SD Specifications Part 1 Physical Layer Simplified Specification, section 4.3.6 "Write Protect Management" [...] It is the responsibility of the host to protect the card. The position of the write...
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Like many people, I've always though that sdcard lock is physical protection. But I've just bought cheap sdcard reader which doesn't really care much about it. It made me realize that it's not...
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