Remount PFsense nano file system as read write
if you use one of the embedded versions of PFSense and you ever need to write to the OS directly you will need to remount the file system in Read/Write mode before you can save the changes. Load up your favourite terminal client, I favour Putty but any should do. Login with your top level account and then choose one of the following:
To remount file systems as read write (RW), run:
To mount as read only (RO) again, run:
On PFSense 2.1, you can also make this change in the GUI under Diagnostics > NanoBSD.