[NCLUG] Mass Storage Device/Digital Camera
Rich Young
rich at republicoftech.com
Wed Nov 27 23:53:03 MST 2002
On Wednesday 27 November 2002 04:23, Sean Reifschneider wrote:
> On Mon, Nov 25, 2002 at 08:51:24AM -0700, Rich Young wrote:
> >Meanwhile, some interesting things turn up in /var/log/messages and the
> > file system when I plug the camera into the USB port. When the device is
> > set in "Mass Storage" mode, the machine assigns it a USB location,
> > assumes it's a CD, mounts it as /mnt/cdrom1, and then issues a cute
> > little "this disk
>
> That's probably the problem. Check out /proc/scsi/scsi and see if the
> camera is listed there. If so, try mounting the appropriate /dev/sd*1
> device as a vfat file-system...
>
> That's what the "mass storage" devices I've used for both of my cameras
> required and it's worked with varying degrees of success. Sometimes
> I've found that either the driver or the device doesn't do the right
> thing and things get confused.
Sean seems to be on to something here -- /proc/scsi/scsi contains:
[root at home dev]# more /proc/scsi/scsi
Attached devices:
Host: scsi0 Channel: 00 Id: 00 Lun: 00
Vendor: MITSUMI Model: CR-4804TE Rev: 2.6C
Type: CD-ROM ANSI SCSI revision: 02
Host: scsi1 Channel: 00 Id: 00 Lun: 00
Vendor: HP Model: PhotoSmart 720 Rev: 1.00
Type: Direct-Access ANSI SCSI revision: 02
So we're connected, and the camera is not a total mystery to my machine. RH's
Hardware Browser shows me the camera at /dev/sda ("Model: Unknown SCSI" but
it appears/disappears with the camera hotplug/unplug), so I worked on
mounting that as vfat, msdos, umsdos, etc. I keep getting
mount: No medium found
messages. When I switch the camera from Mass Storage to Digital Camera mode,
I get the same message, but far, far faster from digital camera mode than
when it's a storage device.
Am I wrong about the camera being at /dev/sda? Or is there some incantation
to be recited that I'm not aware of? Any ideas?
--Rich
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