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My Western Digital My Passport portable drive is not recognized in OS X. It used to be recognized, but not anymore. It does not appear in /Volumes.

The hard drive is recognized by a Linux machine. I am not sure what happened — any ideas how to fix that?

  #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *750.2 GB   disk0
   1:                        EFI                         209.7 MB   disk0s1
   2:                  Apple_HFS Macintosh HD            749.3 GB   disk0s2
   3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3

/dev/disk1
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:     FDisk_partition_scheme                        *1.0 TB     disk1
   1:                 DOS_FAT_32 MY PASSPORT             1.0 TB     disk1s1
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2  
What do you see in Disk Utility? – Michael Hampton Nov 11 '12 at 15:58
1  
What happens when you type diskutil mount /dev/disk1s1? – slhck Nov 11 '12 at 18:44

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