RevPi Core S is Write Protected

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Mehace
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Joined: 13 Feb 2026, 13:40

RevPi Core S is Write Protected

Post by Mehace »

Image

Hello everyone,

I just bought a new RevPi Core S and the first thing I wanted to do was create a backup image. I was able to read the device and create the image without any issues. However, when I try to write the same image back to the device, I get an error saying that the media is write‑protected.

I’ve tried using rpiboot‑CM4‑CM5 – Mass Storage Gadget as well as rpiboot‑CM‑CM2‑CM3. I also tested with Win32 Disk Imager and the Raspberry Pi Imager, but none of them work they all say that the drive is write protected.

As an additional check, I verified the disk attributes using DiskPart, and it does not appear to be write‑protected:

Code: Select all

DISKPART> attributes disk
Current Read-only State : No
Read-only              : No
Has anyone encountered this before or knows what might be causing it?

Thank you!
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nicolaiB
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Re: RevPi Core S is Write Protected

Post by nicolaiB »

Win32 DIsk Imager is probably lacking permissions - did you start it with Administrator privileges ?
Nicolai
Mehace
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Joined: 13 Feb 2026, 13:40

Re: RevPi Core S is Write Protected

Post by Mehace »

Yes I did. I also tried Rasberry Pi Imager.
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Amar
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Re: RevPi Core S is Write Protected

Post by Amar »

The write-protected error on Windows is almost certainly caused by Windows Controlled Folder Access (ransomware protection) blocking Win32 Disk Imager — not actual eMMC hardware protection.

Fix: Go to Windows Security → Ransomware Protection → Allow an app through Controlled Folder Access and add Win32DiskImager.exe as an exception. Then retry the write.

Reference:
viewtopic.php?t=3526

Regards,
Amar
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Mehace
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Joined: 13 Feb 2026, 13:40

Re: RevPi Core S is Write Protected

Post by Mehace »

Solved thank you!
Ransomware Protection was the cause.
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