e: Alcor Micro USB Card Reader

[Roger Heflin]

R. G. Newbury wrote:
> Subject: Re: Alcor Micro USB Card Reader
> To: For users of Fedora <fedora-list at redhat.com>
> Message-ID: <48075705.7080303 at infinity-ltd.com>
> Content-Type: text/plain; charset="iso-8859-1"
> 
> R. G. Newbury wrote:
>  > > I installed an Alcor Micro USB card reader in my desktop machine. 
> lsusb
>  > > reports it as:
>  > >
>  > > Bus 001 Device 003: ID 058f:6362 Alcor Micro Corp. Hi-Speed 21-in-1
>  > > Flash Card Reader/Writer (Internal/External)
>  > >
>  > > Googling produced some pages which imply that this unit is handled by
>  > > the kernel and a module.
>  > >
>  > > I cannot find, anywhere, the name of the module and the unit is 
> unusable.
>  > > Help?
>  > > Geoff
>  > >
> I don't know your specific unit, but all the ones I have run into
> use the usb_storage module. It will appear as 1 or more SCSI drives
> to the system. Most cards will auto-mount off of on a mount point
> off of /media.
> 
> You may want to take a look /var/log/message when you plug the
> reader in if you are using it externally.
> 
> THanks. That helped a little. I modprobed the usb-storage module and it 
> recognized the various readers as sdd through sdg. Tor those who don't 
> know about it, /dev/disk/by-id shows the id's of all disks and 
> partitions. In this case, the CF, SD, SM and MS reader instances were 
> listed by number, but the SD was xxxx:0 and therefore sdd.
> 
> When I tried mounting it however the best I could get was Unable to read 
> partition table, and VFS cant find a valid FAT filesystem on sdd.
> Changing the filesystem did not help either.
> 
> It may be the card, but I do not know...
> 

There has been some discussion on the linux-kernel list about some readers/cards 
(right around 2GB) having non-512 byte block sizes and their being issues with 
that, it may be a combination of card and reader not doing things quite right.

What does is say when you plug it in?

                                    Roger