Date: Thu, 14 Aug 2008 16:47:45 +0200 From: Polytropon <freebsd@edvax.de> To: EdwardKing <zhangsc@neusoft.com> Cc: FreeBSD <freebsd-questions@freebsd.org> Subject: Re: How to visit U disk? Message-ID: <20080814164745.e5aec5ec.freebsd@edvax.de> In-Reply-To: <001601c8fda6$401007d0$3f83a8c0@neusofteaf5839> References: <004901c8fc15$cfd98130$3f83a8c0@neusofteaf5839> <20080813123421.9d297acb.freebsd@edvax.de> <001601c8fda6$401007d0$3f83a8c0@neusofteaf5839>
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On Thu, 14 Aug 2008 08:39:43 +0800, EdwardKing <zhangsc@neusoft.com> wrote: > Then I use dmesg: > $dmesg | grep ^da > da0 at umass-sim0 bus 0 target 0 lun 0 > da0:<USB NAND FLASH DISK 0.20> Removable Direct Access SCSI-2 device > da0:1.000MB/s transfers > da0:125MB (256000 512 byte sectors: 64H 32S/T 125C) Correct, this shows da0 is your USB disk. You just need to know which partition to access. # ls /dev/da0* will show you which entries are present. As I mentioned before, /dev/da0s1 or /dev/da0s1c should be the correct one. You can check which partitions are on da0 with this command that just does some reading (no modification): # fdisk da0 Then you tried, as suggested: > $mount -t msdosfs dev/da0s1c /mnt > mount_msdosfs: /dev/da0s1c: Operation not permitted Yes, of course. You're issuing this command from a user's shell, not as root. But because of FreeBSD's security concepts, you need to do the mount operation as root (that's why I prefixed the mount command with a # sign), so use "su" or "sudo" (sudo needs to be installed). You can, of course, enable the user to have access to the USB devices by modifying /etc/devfs.conf and setting vfs.usermount=1 in /etc/sysctl.conf. > $mount -t msdosfs dev/da0 /mnt > mount_msdosfs: /dev/da0: Operation not permitted Same reason here. You need to be root to do this. And don't complain, it's completely intended to be this way. :-) -- Polytropon >From Magdeburg, Germany Happy FreeBSD user since 4.0 Andra moi ennepe, Mousa, ...
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