terminal while booted into the member card, then reboot:</p>
<pre><code>sudo mount -o remount,rw /cdrom
-sudo dd if=/dev/zero of=/cdrom/casper-rw bs=1M count=1700 oflag=sync status=progress
-sudo mkfs.ext4 -L casper-rw -F /cdrom/casper-rw
-sudo sed -i 's/noprompt --/noprompt persistent --/' /cdrom/syslinux/txt.cfg /cdrom/isolinux/txt.cfg
+sudo dd if=/dev/zero of=/cdrom/writable bs=1M count=1700 oflag=sync status=progress
+sudo mkfs.ext4 -L writable -F /cdrom/writable
+sudo sed -i 's/fsck.mode=skip --/fsck.mode=skip persistent --/' /cdrom/syslinux/txt.cfg /cdrom/isolinux/txt.cfg
sync
echo "done!"</code></pre>