El día Thursday, November 15, 2012 a las 05:57:45PM +0100, Fernando Apesteguía escribió:
> On Thu, Nov 15, 2012 at 3:06 AM, Warren Block <wbl...@wonkity.com> wrote: > > On Wed, 14 Nov 2012, Mike Clarke wrote: > > > >> On Wednesday 14 November 2012 19:43:30 Fernando Apesteguía wrote: > >> > >>> If I boot the system and plug the SD card in, the green led > >>> doesn't even switch on and there is only a /dev/da0 that I can not > >>> mount. If I boot the system with the card plugged in, the green led is > >>> on and there is a /dev/da0s1 device that I can't still mount because > >>> mount_msdosfs returns an Input/Output error after some time. > >> > >> > >> I think that's pretty much standard behaviour. The solution appears to be > >> to "wake" it up with the following incantation: > >> > >> dd if=/dev/null of=/dev/da0 count=0 > >> > >> That's what works here. See the thread starting with > >> > >> <http://lists.freebsd.org/pipermail/freebsd-questions/2010-February/212109.html> > > > > > > true > /dev/da0 > > That doesn't work for me, but the dd operation does. What can be the > difference? Both commands open the file /dev/da0 for: open("/dev/da0",O_WRONLY|O_CREAT|O_TRUNC,0666) = 3 without writing any myte to it; you can proof this with: # truss dd if=/dev/null of=/dev/da0 count=0 and # truss sh <<EOF true > /dev/da0 EOF matthias -- Sent from my FreeBSD netbook Matthias Apitz | - No system with backdoors like Apple/Android E-mail: g...@unixarea.de | - No HTML/RTF in E-mail WWW: http://www.unixarea.de/ | - No proprietary attachments phone: +49-170-4527211 | - Respect for open standards _______________________________________________ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
