Date: Fri, 20 Jul 2012 19:05:15 -0500 From: "Sam Zehr" <sam@athyriogames.com> To: <freebsd-fs@freebsd.org> Subject: Boot disk read-only? Message-ID: <01bf01cd66d4$84756b40$8d6041c0$@com>
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Hello all. I apologize if this is the wrong place to ask, but I've had good luck with USB questions in the USB list, so I thought this would be the place. How do I make a disk in FreeBSD 9.0 _completely_ read-only? I am converting an embedded system using flash for a disk from BSD 7.0 to 9.0 rc.initdiskless is working I had luck with BSD 7.0 by doing the following additional steps: 1. Add noatime to fstab options 2. Add vfs.nfs.diskless_valid=1 to /boot/loader.conf So far this is not working on BSD 9.0. It looks like something is changing on the disk during boot The disk is a USB thumb drive Sysctl vfs.nfs.diskless_valid returns 0 once booted up Please note that I am not just concerned about files - the entire disk needs to be locked, like ROM. Is there a way to completely lock the disk, even during the boot? Or perhaps a reason why setting vfs.nfs.diskless_valid=1 in /boot/loader.conf does not appear to work? Thanks Sam
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