Answer by Yuval Harpaz for How do I mount an SD card as read/write?
I once had a similar issue and the solution was to slide a little button on the card itself to switch between read only and read/write. This might not be the case for you but worth checking
View ArticleHow do I mount an SD card as read/write?
I'm trying to create an installer SD card but I can't write the image to the file system because: dd: failed to open '/dev/mmcblk0p1': Read-only file system The command I'm running is: sudo dd...
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