Firefly Open Source Community

Title: MMC gets corrupted [Print This Page]

Author: man1920 Time: 5/27/2022 17:37
Title: MMC gets corrupted
Hi Sir,

I am using RK3399 Board for my development and using External SDCard for storage purpose.
I am able to build and boot the board with Android 7.1 and able to access the external SD card.

While testing sometime when I am trying to save any data on SDCard i get error SD card is read only.
Error
System.err: java.io.FileNotFoundException: /storage/emulated/0/User_Notes.txt (Read-only file system)

This error is not frequent. But some time I face this issue.

After Restart everything works fine. I checked my SD Card and it is also working fine.

Since I am not facing this issue every time hence I am not sure what might be issue ?

Any suggestion what might be issue in Android side? or BSP side ? Or how can I root cause this issue ?

Thanks

Author: harrybr166 Time: 1/12/2026 16:37
I appreciate this thought-provoking article, thank you for sharing! Free ITIL-4-Transition latest test sample online test materials are now available! Best of luck to all exam-takers!

Author: willall504 Time: 1/20/2026 17:22
I’m so grateful for your article, it was truly eye-catching and insightful. Using this New HPE6-A86 test guide materials, I earned a promotion and raise. Now, it’s free for everyone. Best of luck in your career growth!

Author: william944 Time: 1/23/2026 00:18
Your article was incredibly impactful, I truly appreciate it. Explore Valid test guide ISO-IEC-27001-Lead-Implementer files, which is packed with valuable content, freely available to help you.

Welcome Firefly Open Source Community (https://bbs.t-firefly.com/)