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  1. PORead only file system android (is /mnt not /system)
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    <p>Android device, I want to touch a file or dir in /mnt, it say "Read only file system", I don't know how to do. i try fix it with that fix /system, but it no work.</p> <pre><code>root@android:/ # ls -l ..... drwxrwxr-x root system 2011-01-01 11:33 mnt ..... root@android:/ # root@android:/ # mkdir /mnt/test mkdir failed for /mnt/test, Read-only file system 255|root@android:/ # root@android:/ # mount -o remount,rw /mnt Usage: mount [-r] [-w] [-o options] [-t type] device directory 1|root@android:/ # </code></pre> <p>can't fix it as /system. how can i do it? </p> <pre><code>root@android:/ # id uid=0(root) gid=0(root) root@android:/ # </code></pre> <p>But i can make directory in /mnt/xxx/, like this:</p> <pre><code>root@android:/ # mkdir /mnt/usb_storage/test root@android:/ # ls /mnt/usb_storage/test/ root@android:/ # ls /mnt/usb_storage/ test root@android:/ # </code></pre> <hr> <p><strong>And</strong></p> <p>i fond difference between /mnt and /mnt/usb_storage in init.rc</p> <p>look /mnt:</p> <pre><code># create mountpoints mkdir /mnt 0775 root system </code></pre> <p>look /mnt/usb_storage:</p> <pre><code># Directory for multi usb storage mkdir /mnt/usb_storage 0700 root system mount tmpfs tmpfs /mnt/usb_storage mode=0755 gid=1000 </code></pre> <p>Yes!I fix it!</p> <p>create mountpoints </p> <p>mkdir /mnt 0775 root system</p> <p>add <strong>mount tmpfs tmpfs /mnt/ mode=0755 gid=1000</strong></p> <p><strong>now i can touch file or make directory in /mnt</strong></p> <pre><code>root@android:/mnt # mkdir /mnt/test root@android:/mnt # ls -l /mnt/ .... drwxrwxrwx root root 2011-01-01 11:04 test drwxrwxrwt root system 2011-01-01 11:00 usb_storage root@android:/mnt # </code></pre> <hr> <h3>Resolved</h3> <p>ramdisk rootfs is read only.</p> <pre><code>mount -o remount,rw / </code></pre>
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