Good post on removing the read only normal mode of the file system in Pi-Star. Note, you may have to redo this on occasion as updates might put parts back. And he missed one (or it was added later) in /etc/rc.local you can change to rw from ro. I replace bash shell with fish shell, so I leave the bash indicator. If you get a drive write error later from an update, you can type bash <enter> to go into the bash shell and still see the ro or rw indicator to troubleshoot what might have been added back in.
https://vk3erw.com/pi-star/pi-star-how-to-make-file-system-read-write-rw
The concept of a read only file system may not suit all users so here are the instructions how to change the pi-star configuration so the file system is always in RW mode.
Note: Some of the files modified in this procedure may be overwritten during future Pi-Star upgradates.
Step 1 – mount file system as RW on boot:
File: /etc/fstab
change ro to rw in line 3 + 4
/dev/mmcblk0p1 /boot vfat defaults,rw 0 2 /dev/mmcblk0p2 / ext4 defaults,noatime,rw 0 1
Step 2 – prevent remount on logout:
File: /etc/bash.bash_logout
comment out line 9 + 10
#sudo mount -o remount,ro / #sudo mount -o remount,ro /boot
Step 3 – To remove “(rw)” and “(ro)” from the command prompt. Note: this is only an indication, will not affect the file system
File: /etc/bash.bashrc
near the end of the file, modify both “PS1= …” lines by removing “${fs_mode:+($fs_mode)}“
if [ $(id -u) -eq 0 ];
then
# PS1='\[\033[01;31m\]\u@\h${fs_mode:+($fs_mode)}\[\033[00m\]:\[\033[01;34m\]\W\[\033[00m\]\$ '
PS1='\[\033[01;31m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\] \$ '
else
# PS1='\[\033[01;32m\]\u@\h${fs_mode:+($fs_mode)}\[\033[00m\]:\[\033[01;34m\]\W\[\033[00m\]\$ '
PS1='\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\] \$ '
fi
Note: in this example the original lines are commented out to illustrate the changes.
Step 4 – prevent hourly RO remount
File: /usr/local/sbin/pistar-hourly.cron
comment out the last line of the file
# Mount the disk RO
# mount -o remount,ro /