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I recently purchased a Pi-Zero kit that included a bare 16GB SanDisk microSD card. When I went to use it, it only reported 30MB. I've tried "refreshing" it by using dd to write over the disk from /dev/zero, and using a Windows based SD format tool from Tuxera. So far no joy. Does anyone have any suggestions what to try to revive the card, or is it just dead?
Your SD card is probably fine and this is more a formatting issue or getting the PI to read it properly.
Unfortunately, the only experience I have with a PI was setting up "Retro PI" and that was 4 years ago. That software has a specific feature you must do in order to get it to address the whole SD card. The setting was:
Raspi-Config >7. Advances Options > A1 Expand File System
Obviously, that isn't going to be much help if you aren't using Retro PI. But I can only assume there must be a similar feature/step required in whatever OS you are using on it.
I'm guessing its probably just a bad chip that managed to get through quality control --- assuming they test every unit. But maybe someone knows something that might get the card to find its missing capacity. But then, should one trust it? Probably not...
It was Canakit. I expect that they would be on the level. Though the card did come in a small antistatic bag, rather than on a SanDisk bubble-pack card. So maybe they purchased a bulk lot, with the odd one being bad, or mislabeled. Who knows? It doesn't really seem worth pursuing, its only a 16GB card, and I have several 32G cards available to me. For ~$7, its probably more than that in postage. At my hourly rate, I've probably spent more than that wingeing about it here ...
Most likely, the SD card has the Linux OS on it already (Raspian), which means that the SD card is probably ok. Boot up on the SD card and log in. The user name should be pi and the password is raspberry. Once at the command prompt, type in sudo raspiconfig. Once there, go to the advanced options. There should be an option to expand the drive. It will utilize the rest of the 16gb space.
This is common with the Raspberry Pi, especially with the Cana Kit.
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