Disappearing /dev/sd's

[Shawn Tayler]

On Wed, 10 May 2006 10:05:19 -0500 (EST) Net Llama!
<netllama at linux-sxs.org> exclaimed:

> On Wed, 10 May 2006, Shawn Tayler wrote:
> > Hi Guys,
> >
> > Here is an interesting one.  the items /dev/sdc1 and sdd1 have
> > disappeared from my /dev directory.  I take it I need to use mknod but
> > to be honest its been a while.  Suggestions?
> >
> > System slackware-current.
> >
> > Shawn
> >
> > PS drove me nuts wondering why my USB drives wouldn't mount....
> 
> Are you using udev, devfs or static /dev ?  Is this problem only evident
> with USB drives?


HI Lonni,

The problem only seems to be with USB drives.  I can see it show up
in /var/log/messages:

May 11 05:31:57 delphi kernel: usb 1-1.1: new high speed USB device using ehci_hcd and address 7
May 11 05:31:58 delphi kernel: usb 1-1.1: configuration #1 chosen from 1 choice
May 11 05:31:58 delphi kernel: scsi8 : SCSI emulation for USB Mass Storage devices
May 11 05:32:03 delphi kernel:   Vendor: Memorex   Model: TD Classic 003C   Rev: 1.04
May 11 05:32:03 delphi kernel:   Type:   Direct-Access                      ANSI SCSI revision: 00
May 11 05:32:03 delphi kernel: SCSI device sdd: 4014080 512-byte hdwr sectors (2055 MB)
May 11 05:32:03 delphi kernel: sdd: Write Protect is off
May 11 05:32:03 delphi kernel: SCSI device sdd: 4014080 512-byte hdwr sectors (2055 MB)
May 11 05:32:03 delphi kernel: sdd: Write Protect is off
May 11 05:32:03 delphi kernel:  sdd:<7>usb-storage: queuecommand called
May 11 05:32:03 delphi kernel: sd 8:0:0:0: Attached scsi removable disk sdd
May 11 05:32:03 delphi kernel: sd 8:0:0:0: Attached scsi generic sg3 type 0

As you can see it supposedly showed up on /dev/sdd.  Well even fdisk can't see it:

root at delphi:/home/shawn# fdisk /dev/sdd

Unable to open /dev/sdd

I'm not sure about the udev.  The package is installed, is it active by default in Slackware?

Shawn