Ubuntu – My external hard drive keeps unmounting and remounting itself

automountexternal-hddmount

I have a Seagate 500 GB desktop external drive. When I plug the drive in through USB 2.0, it immediately auto-mounts and functions for about 1 minute before unmounting itself. After a few more minutes it will auto-mount again and the process repeats.

Is my drive bad or is there any hope that I can get this to work?

Best Answer

There have been some people using Mac OSX that have had similar problems (see here and here).

The solution that works for many of them (including me) was to just reformat the drive. Since your drive only stays mounted for a short time you will have to do the reformatting quickly.

You can do this with a tool such as gparted, but be careful you can lose data if you don't know what you are doing.

EDIT:
This worked for about a week. I have since taken the bare hard drive out of the case and placed it in this new enclosure. Things seem to be working so hopefully it was just a problem with the case.

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Ubuntu – Mount external Hard Drive with /etc/fstab on ubuntu 14.04 problems

The first error you got is because there is no such thing as sec=ntl. The available options are (from man mount.cifs):

sec=

Security mode. Allowed values are:

none - attempt to connection as a null user (no name)

krb5 - Use Kerberos version 5 authentication

krb5i - Use Kerberos authentication and forcibly enable packet signing

ntlm - Use NTLM password hashing

ntlmi - Use NTLM password hashing and force packet signing

ntlmv2 - Use NTLMv2 password hashing

ntlmv2i - Use NTLMv2 password hashing and force packet signing

ntlmssp - Use NTLMv2 password hashing encapsulated in Raw NTLMSSP message

ntlmsspi - Use NTLMv2 password hashing encapsulated in Raw NTLMSSP message, and force packet signing

So, the first approach (using the fstab) might work if you use one of the above. Presumably, you wanted sec=ntlm.

As for the 115 error, I found this very nice guide on the Gentoo forums that I suggest you read. Basically, it suggests adding a line like this to your /etc/hosts file (change 192.168.1.12 to the IP of your drive):

192.168.1.12    Seagate-XXXXX

Once that's done, you should be able to use Seagate-XXXXX instead of the IP to connect. The page provides some other troubleshooting tips (including using smbtree to make sure that the share is actually available). I really suggesty you read it.

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