[Wlug] Missing /dev files

[Mike Frysinger]

On Sunday 30 March 2008, Chuck Noyes wrote:
> I had mounted an external usb drive /dev/sdb2 onto /media/sdb2 and was
> coping several mega-bytes of files to it when I got some I/O errors.
> Then I noticed that all of my /dev/sdb* files were missing from /dev.
>
> When I do an ls -al /dev, all the files are there except the sdb files.
>
> How can I get these back? I'm running Ubuntu 'gutsy' 2.6.20-16-generic.

the device nodes only exist as the kernel thinks the device exists.  if you 
got I/O errors and then the device nodes disappeared, the kernel probably 
detached the device.  so even if you made the device nodes by hand, it 
wouldnt matter as the kernel still wouldnt think the device was attached.  
review your `dmesg` and if need be, unplug/plug in the USB device.
-mike
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