Ted Gould's suggestion to try sdc1 worked like a champ, but I'm very 
glad to hear about usbview and will certainly get it.

Thanks!

-mj-

Alan Dayley wrote:

> On Monday 11 October 2004 05:09 pm, Mark Jarvis wrote:
> 
>>Nope.  One device is a standard flash memory "thumb" or "lipstick"
>>drive. It plugs into a standard USB port. The other device is [a SD
>>memory card more-or-less permanently inserted in a SD card reader].
>>(Note brackets.) The SD card reader plugs into a standard USB port.
>>
>>It's equivalent to swapping two std. flash drives in one USB port and
>>works the same at home (both a SCSI drive & a USB drive present) and at
>>school (just USB).  First drive seen always works. Second(swapped in)
>>drive always fails. Haven't played around with it as much at school, but
>>  get basically the same results when using my flash drive & a borrowed
>>drive.
>>
>>I shouldn't have mentioned the SD card. Don't bother going there. If the
>>SD card/reader combo is seen first it works fine. The issue is swapping
>>two (or more) USB flash memory drives in & out of a single connection
>>point.
> 
> 
> OK!  Now I understand.  Now we can proceed as I would proceed.
> 
> First, we need to see what the USB is doing as you connect and disconned the 
> USB device.  The best way to do that, in my experience, is to use usbview.  
> It is a utility that displays a "tree" view of the USB connections and 
> devices.  You can watch as you plug something in and as it goes away when you 
> remove it.  You might have it already but I have always had to install it 
> separately.  Try http://www.kroah.com/linux-usb/.  I have always had good 
> luck with the binary RPM file or you can install and build from the source.
> 
> Now, boot your computer without any devices plugged into the USB.  Start 
> usbview and position it so you can see it.  Now plug one of the devices into 
> the end of your cable.  It should get loaded into the USB tree view and be 
> identified, etc.
> 
> Now, disconnect it from the USB.  It should disapper from the USB tree.  If 
> not, that is the problem.  The hotswap is not removing the device.
> 
> Now, connect the other USB device.  It should come up in the tree view with 
> it's own unique information.  If it does not, the hotswap is not adding the 
> device.
> 
> Now (I'm saying "Now' too much), we will have to figure out what to do next 
> based on what you learn here.
> 
> As an aside, I have found USB to be unstable on some computers.  I have a 
> Compaq computer here that will not reconnect a USB device on any port that 
> already had a device connected.  Everything is setup "right" but if I sync my 
> palm on one port and then try to plug something else in that same port, the 
> something else will not be seen.  On that particular computer, the only way 
> to reset that bogus USB situation is to reboot (yuck!).  I did not dig 
> further to solve it since, at the time, I just left the printer plugged into 
> it's port and only used the other for my palm.
> 
> I guess what I am saying is that to really solve the problem, we may have to 
> venture deep into the driver tree before we are done.  Just a small warning.
> 
> Alan
> 
> 
>>BTW, having trouble getting one student's Memorex flash drive to work at
>>all. (Other students' flash drives are OK.)
> 
> 
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