Raspberry Pi OS • Re: Cannot configure microSD card for 3B+

1. What's the exact wording of the error?
2. A what point in the configure, write, and verify process does the error occur?
3. Are your windows computers configured to mount (i.e. assign a drive letter) to USB devices as they are connected?
4. Have you tried booting from one of the written SD cards?

There's a common issue that is entirely due to MS Windows that you could be hitting.

Image writes two partitions* to the SD card. Windows understands the first one but not the second one. That can cause it to report an error which includes a prompt for you to format it. Which you shouldn't do.

If this is what you're seeing it can safely be ignored.

*: AKA drives but that's a simplification.

Statistics: Posted by thagrol — Fri Aug 08, 2025 10:00 pm

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