Disappearing /dev/sd's

[Michael Hipp]

Those can be really flakey. Depends on exactly how much power is at the USB 
port, size of the USB cable, wear on the connectors, phase of the moon. I 
prefer the powered ones whenever possible. They also die frequently in my 
experience.

You might move it to another system and see if it works there.

Michael

Ben Duncan wrote:
> I have it to, but the power cycle did not help - device stayed missing
> It is really problematic on those pesk 2.5 type self powered disk.
> 
> Michael Hipp wrote:
>> 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....
>>
>>
>> I have this problem regularly with certain USB drives. I remedy it by 
>> power cycling the USB drive. Then the /dev/sdx reappears and all is 
>> well. Note that it doesn't help to just unplug/plug the USB cord. So I 
>> concluded that the problem is in the USB drive itself rather a failure 
>> of Linux to recognize it. Mine are Ubuntu systems.
>>
>> Michael
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>