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eMMC Flash partition READ-WRITE from Read Only

Question asked by Murali Selvaraj on Nov 3, 2017

Please find below details and query.

~ # fdisk -l

Disk /dev/mmcblk0: 116 MB, 116523008 bytes
4 heads, 16 sectors/track, 3556 cylinders
Units = cylinders of 64 * 512 = 32768 bytes

Device Boot Start End Blocks Id System
/dev/mmcblk0p1 73 200 4096 83 Linux
/dev/mmcblk0p2 201 328 4096 83 Linux
/dev/mmcblk0p3 329 872 17408 83 Linux
/dev/mmcblk0p4 873 3556 85888 5 Extended
/dev/mmcblk0p5 877 1420 17408 83 Linux
/dev/mmcblk0p6 1425 1488 2048 83 Linux
/dev/mmcblk0p7 1493 1556 2048 83 Linux
/dev/mmcblk0p8 1573 1668 3072 83 Linux
/dev/mmcblk0p9 1673 1768 3072 83 Linux
/dev/mmcblk0p10 1773 1836 2048 83 Linux
/dev/mmcblk0p11 1841 1904 2048 83 Linux
/dev/mmcblk0p12 1909 2196 9216 83 Linux
/dev/mmcblk0p13 2201 2488 9216 83 Linux
/dev/mmcblk0p14 2493 2940 14336 83 Linux
/dev/mmcblk0p15 2945 3392 14336 83 Linux

The Partition /dev/mmcblk0p13 which is used for rootfs. But it is in Read-Only mode.

For debugging purpose, I need to change Read-Write permission for /dev/mmcblk0p13.

Can you please share the procedure to convert to Read-Write?

The Partition /dev/mmcblk0p13 which is based on squashfs.

~ # mount
/dev/root on / type squashfs (ro,relatime)


Please share your inputs.

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