Hard Drive not being Recognized in Linux or Windows
Suddenly both my Windows machine and Linux (Ubuntu 12.04) do not recognize my external hard drive. I do see the actual device when I perform an fdisk command or go to disk management in Windows. I cannot see the file system or something. Is there a way to fix this? This is the output of my fdisk -l command. 

    Disk /dev/sdb: 499.4 GB, 499405291520 bytes
    255 heads, 63 sectors/track, 60715 cylinders, total 975400960 sectors
    Units = sectors of 1 * 512 = 512 bytes
    Sector size (logical/physical): 512 bytes / 512 bytes
    I/O size (minimum/optimal): 512 bytes / 512 bytes
    Disk identifier: 0xc68c3a38

but there is nothing below that (unlike with my internal harddrive where the console displays /dev/sda1 etc.

I tried to manually mount the drive and I received the following error after performing the following command...

    matthew@matthew-System-Product-Name:/dev$ sudo mount /dev/sdb1 /media/ed
    mount: special device /dev/sdb1 does not exist

By the way, the external harddrive is a Western Digital "My Passport" and I can see the CD rom .iso it mounts to install helper software.

Hard Drive not being Recognized in Linux or Windows
===

Suddenly both my Windows machine and Linux (Ubuntu 12.04) do not recognize my external hard drive. I do see the actual device when I perform an fdisk command or go to disk management in Windows. I cannot see the file system or something. Is there a way to fix this? This is the output of my fdisk -l command. 

    Disk /dev/sdb: 499.4 GB, 499405291520 bytes
    255 heads, 63 sectors/track, 60715 cylinders, total 975400960 sectors
    Units = sectors of 1 * 512 = 512 bytes
    Sector size (logical/physical): 512 bytes / 512 bytes
    I/O size (minimum/optimal): 512 bytes / 512 bytes
    Disk identifier: 0xc68c3a38

but there is nothing below that (unlike with my internal harddrive where the console displays /dev/sda1 etc.

I tried to manually mount the drive and I received the following error after performing the following command...

    matthew@matthew-System-Product-Name:/dev$ sudo mount /dev/sdb1 /media/ed
    mount: special device /dev/sdb1 does not exist

By the way, the external harddrive is a Western Digital "My Passport" and I can see the CD rom .iso it mounts to install helper software.
