I have a NTFS formatted external HDD with all of my personal files backed up on it. When I plug it in, I can see it flash on the menu of 'Disks' for less than a split second, before it disappears. I ran 'sudo lsub' and got the following response:

Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 002: ID 0603:8122 Novatek Microelectronics Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 002: ID 046d:c52b Logitech, Inc. Unifying Receiver
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 002: ID 093a:2510 Pixart Imaging, Inc. Optical Mouse
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 009 Device 000: ID 0bc2:a003 Seagate RSS LLC Backup Plus
Bus 009 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 008 Device 005: ID 0930:6544 Toshiba Corp. Kingston DataTraveler 2.0 Stick (2GB)
Bus 008 Device 002: ID 2109:3431
Bus 008 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

The Seagate Backup Plus is the drive in question, so it does detect it. What's going on here? This has happened to me twice; the drive works just fine right after I install the OS, but then at some point, as I'm installing my programs and updating/upgrading the OS, my hard drive can no long be mounted. Ideas?

Do you have ntfs-3g installed?
What happens if you mount the drive manually?


Kind regards.

I can't try that right now, and I'll explain why.

So my hard drive has a USB 3.0 connection, and the port that I've been trying to plug it into is also a USB 3.0 port. I realized that if I try to plug it into a USB 3.0 port, my hard drive won't register and I can't mount it. But, if I plug it into a USB 2.0 port, it works just fine. This is really inconvenient, obviously because 2.0 is much slower and also because my only USB 2.0 ports are in the back of this very large, custom PC tower that sits on the floor. Do you have any ideas what's going on?

I will try to run that terminal command after I finish transferring all these files in an hour or so.

Have you checked in bios under usb options?

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I agree. Have you tried Unetbootin?

I think (since it still works via usb2) you have got a broken usb3 driver on last update.