Re: USB hard drive

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On Fri, 2006-03-31 at 14:47 +0000, Jim Douglas wrote:
> >From: James Wilkinson <fedora@xxxxxxxxxxxxxxxxxxx>
> >Reply-To: For users of Fedora Core releases <fedora-list@xxxxxxxxxx>
> >To: fedora-list@xxxxxxxxxx
> >Subject: Re: USB hard drive
> >Date: Fri, 31 Mar 2006 13:26:34 +0100
> >
> >Jim Douglas has been having trouble with his USB drive.
> >
> > > .....rebooting show this in the log file, not sure which device to 
> >mount?
> > > Whey does it have 4 when there's only 1 drive?
> > >
> > > sd 0:0:0:0: Attached scsi removable disk sda
> > > sd 0:0:0:1: Attached scsi removable disk sdb
> > > sd 0:0:0:2: Attached scsi removable disk sdc
> > > sd 0:0:0:3: Attached scsi removable disk sdd
> > >
> > > EXT3 FS on hda3, internal journal
> > >  Vendor: IOI       Model: MediaBay 7 in 4   Rev: 1.00
> > >  Type:   Direct-Access                      ANSI SCSI revision: 00
> > >  Vendor: IOI       Model: MediaBay 7 in 4   Rev: 1.01
> > >  Type:   Direct-Access                      ANSI SCSI revision: 00
> > >  Vendor: IOI       Model: MediaBay 7 in 4   Rev: 1.02
> > >  Type:   Direct-Access                      ANSI SCSI revision: 00
> > >  Vendor: IOI       Model: MediaBay 7 in 4   Rev: 1.03
> > >  Type:   Direct-Access                      ANSI SCSI revision: 00
> >
> >I said:
> > > Erm -- this looks like it's a device to mount different sorts of media
> > > (CompactFlash, SD, etc.)

	That appears to be an "Insignia 7 in 4" 4-slot media card reader.

> >Jim replied:
> > > It's an IOMEGA 60GB USB external Hard Drive.
> > >
> > > I tried sdb, sdc and sdd and it says,
> > > mount: No medium found.

	Right...  No cards are inserted.

> > > When I try
> > > fdisk -l /dev/sdx (I aslo tried sda, sdb, sdc, sdd)
> > >
> > > nothing happens, no messages or anything.
> >
> >OK: the messages don't tie up with what you say the drive is.

	I have to agree with this statement.  Those messages indicate a 4 slot
card reader and your external hard drive should show up as sde.

> >Is it possible that you have card readers built into your computer?
> >
> >Can you reboot without the USB drive attached, and check that these
> >messages disappear, and that you don't have any /dev/sd* nodes?
> >
> >Can you list what happens when you plug the hard drive in whilst Linux
> >is booted?
> >
> >Can you try the hard drive in another system (a Windows one would help
> >with debugging)?
> >
> > > The USB hard drive is FAT32, could that be an issue?
> >
> >Probably not.
> >
> >Thanks,
> >
> >James.
> >
> >--
> >E-mail address: james | Mike Andrews' Corollary to Murphy's Law:
> >@westexe.demon.co.uk  | In any sufficiently large collection of texts, 
> >every
> >                       | possible misspeeling, as well as some that are not
> >                       | possible, will occur.
> >
> >--
> >fedora-list mailing list
> >fedora-list@xxxxxxxxxx
> >To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list
> 
> 
> >Is it possible that you have card readers built into your computer?

> No

	Then, I would guess, there is more to that box than what you know.  It
definitely seems to have a build in 4 slot card reader.  That's exactly
how my 4 slot reader comes up except the Vendor is "Generic" and the
model is just "STORAGE DEVICE".

	You don't mention what kind of computer this is.  This wouldn't happen
to be a Dell D300 or D400 would it?

	You didn't list the times from your logs above.  The time stamps on the
"sda-sdd" messages...  Do they correspond to when you plugged in the
drive or to when you booted the system.  I'm betting the later and not
the former.

> >Can you reboot without the USB drive attached, and check that these
> >messages disappear, and that you don't have any /dev/sd* nodes?

> the /dev/sa* nodes are still there after disconnecting.

	Which confirms, you still have that device.

> >Can you list what happens when you plug the hard drive in whilst Linux
> >is booted?

> Nothing happens when I plug it in.

	Now, here is the problem.  It's not being recognized at all and all you
are seeing is the 4 slot card reader, where ever that is.  You don't
realize you've got that installed on that system somewhere but it's
showing up on the USB bus. Look around for some little card slots.

	IAC...  Have you tried anything ELSE in that USB port on that system?
A USB key, perhaps?  Point is to make sure that USB port is working.  It
doesn't look like the drive is being seen at all.

> >Can you try the hard drive in another system (a Windows one would help
> >with debugging)?

> No problem on Windows I copied file to the drive.

> On the Linux box I am definately plugged into USB 2.0.  I have also tried it 
> with an extrnal power supply.

	Try something else in that USB slot and try another USB slot.

	You've made some assumptions that have created some confusion and
you've got some things in that box you were not aware of.  Boot the
system from scratch without that drive plugged in.  I'll bet you will
find those sda-sdd drive messages still there and the devices will still
be there.  Plug the drive in while doing a "tail -f /var/log/messages".
If you DON'T see any activity, then the system is not even seeing the
plugin event (you'll see errors if it sees something get plugged in that
it can not handle).  Diagnose that USB connection.

> Jim

	Mike
-- 
Michael H. Warfield (AI4NB) | (770) 985-6132 |  mhw@xxxxxxxxxxxx
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