Re: USB card readers that work?

[richard lyons <richard@the-place.net>]

On Sunday 23 May 2004 14:33, SJ Straith wrote:
> richard lyons wrote:
[...]
> > "PC-line". I recollect it cost 7 GBP.  I also use one
> > of the same brand for SD cards.  The only problem is
> > the need to reboot when switching between types of media
> > (though I am told the usb can be reset without rebooting
> >  - I forget how and have been too lazy to look it up).
>
> While I'm fairly sure that a large proportion of the readers
> of this list already know all of what comes next, just
> incase there are any newbies who are interested <G>...
>
> The only way I know of doing it is to "mount" and "unmount"
> the flash memory just like I do a cdrom.
>
I have just been spurred by your reply to spend a fruitless hour 
searching the archive.  There was a thread late last summer about 
this, and I was told there that this was a known problem.  Clearly, 
umounting and mounting will allow change of card, but it fails when 
changing type of media.  For example, you can read any number of 
smart media cards, but if you then umount, plug in an SD card, and 
mount, you get "not a valid block device" or similar (from memory).  
Same if you switch to a disgo or memory stick. If you reboot the 
other kind will work, but you can't change back for the same reason.  
I was offered various workrounds, none of which worked.  They told me 
then that it was a kernel issue (IIRC) but unlikely to be resolved 
soon.

[...]
> Then in fstab I just put the line:
>
> /dev/sda1 /cflash vfat defaults,rw,user,noauto,gid=50,umask=002,exec   
> 0   2
My fstab entry is just
 /dev/sda1  /card  vfat noauto,user  0 0

I don't think any of your other options are the reason I cannot switch 
media type, but I may be wrong.  Oh, and I think you don't need the 
'2' at the end - isn't that for disk checking at bootup?

-- 
richard