this post was submitted on 17 Feb 2024
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Uh, you very much can take an image of an SD card, the same as with any other block device.
You can have errors when you write it back into another SD card and end up with a corrupt card. That was from experience a long time ago.
Maybe the tools are better adapted now?
That’s going to be a function of your SD card reader and the quality of the card itself. If you’re really concerned, copy it to your HDD, then read again and verify. And then when writing, do a verify step as well.
If you have write errors, you have a bad card.
But the filesystem is just FAT, isn't it? You should be able to copy at the file instead of block level.
Not with a Nintendo Switch SD card I would think?
The only difference there is the specific formatting, it can still be cloned
If this were universally true then SD cards would be completely useless, as regular writes would fail in the same manner. Bad card, bad slot, or bad tools.