Re: Mounting USB devices

[Trey Sizemore <trey@fastmail.fm>]

Thanks for the assistance...two follow-up questions:
1.  Are these assignments going to change each time I shut down and then 
start up my machine (as far as how they are detected)?  I asked because 
I am running a rather old machine that I leave on during the day, but 
then shut down at night.

2.  How do I give myself access to my devices (read & write) as a normal 
user?  I had to su from the terminal to execute teh sg_map command 
because I had no access as a normal user.  This would be for all devices 
like my CD drives, Zip drive, CF reader, etc.

Again, thanks for all your help.

-Trey

Tom Hoover wrote:

> On Fri, Jan 10, 2003 at 11:05:18PM -0500, Trey Sizemore wrote:
>  
>
> > How can I tell how my USB devices are indentified in Linux?  I want to
> > be able to mount my Sandisk USB mass storage device to get pictures off
> > my camera's CF card.  I know through trial and error that my Zip 250 USB
> > drive is seen as /dev/sda1 so I created a mnt/sda1 to access it.  I have
> > several devices connected via USB including printer, mouse and scanner
> > in addition to the devices mentioned.
> >    
>
> I just went through the same thing this morning, when I added a usb CF
> reader to my system.  Here's a quick 'n dirty checklist:
>
> ezekiel:/# apt-get install sg3-utils
>
> ezekiel:/# sg_scan -i
> /dev/sg0: scsi0 channel=0 id=2 lun=0  type=5
>    PIONEER   DVD-ROM DVD-305   1.03 [wide=0 sync=1 cmdq=0 sftre=0 pq=0x0] 
> /dev/sg1: scsi0 channel=0 id=4 lun=0  type=1
>    HP        C1533A            9503 [wide=0 sync=1 cmdq=0 sftre=0 pq=0x0] 
> /dev/sg2: scsi1 channel=0 id=0 lun=0 [em]  type=5
>    LITE-ON   LTR-52246S        6S04 [wide=0 sync=0 cmdq=0 sftre=0 pq=0x0] 
> /dev/sg3: scsi2 channel=0 id=0 lun=0 [em]  type=0
>    SIIG  CompactFlash Car  0113 [wide=0 sync=0 cmdq=0 sftre=0 pq=0x0] 
>
> ezekiel:/# sg_map    
> /dev/sg0  /dev/scd0
> /dev/sg1  /dev/st0
> /dev/sg2  /dev/scd1
> /dev/sg3  /dev/sda
>
> > From the above, you can see that my CF card is /dev/sda, so the data
> partition is located on /dev/sda1.  I added the following line to
> /etc/fstab:
>
> # compact flash reader
> /dev/cf		/mnt/cf		vfat	user,noauto				0	0
>
> [Note: I used /dev/cf in fstab, as I've linked cf to sda ("ln -s sda1 cf")]
>
>
>