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<blockquote data-quote="smorrison01" data-source="post: 1782002" data-attributes="member: 397677">Similar problemHi,I found this thread where the original post seems quite close to the issue I'm dealing with.I have a Lacie external USB drive that stopped mounting on my MacBook Pro about a week ago. It lights up, makes noises, and spins just as it did when it was working normally; it just won't show up in the Finder. I've switched USB cables and even switched Macs, trying to mount the drive both on my old laptop and the one I got a few months ago.I used the Terminal commands that were suggested on the first page of this thread. The &quot;diskutil list&quot; does show the LaCie drive when it's plugged in, appearing thus:/dev/disk2 (external, physical):&nbsp;&nbsp; #:&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; TYPE NAME&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; SIZE&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; IDENTIFIER&nbsp;&nbsp; 0:&nbsp; &nbsp;&nbsp; Apple_partition_scheme&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; *2.0 TB&nbsp; &nbsp; &nbsp; disk2&nbsp;&nbsp; 1:&nbsp; &nbsp; &nbsp; &nbsp; Apple_partition_map&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 32.3 KB&nbsp; &nbsp;&nbsp; disk2s1&nbsp;&nbsp; 2:&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Apple_HFS LaCie&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 2.0 TB&nbsp; &nbsp; &nbsp;&nbsp; disk2s3The &quot;diskutil mount /dev/disk2s2&quot; command returns the following:&quot;Unable to find disk for /dev/disk2s2&quot;Since the volume shows up in the Diskutil List as &quot;slice 3&quot; (disk2s3), I tried the above command twice with &quot;disk2s3&quot; as well, and both times got the following:&quot;Volume on disk2s3 timed out waiting to mount&quot;Can anyone please help interpret this? I get that in a general sense, the computer recognizes the disk in some way but not in a way that will allow the disk to mount and me to work with its contents.Also, FWIW, when I open the Disk Utility app with the drive already plugged in, it says it's searching for disks and shows the spinning wheel, but as soon as I turn off the drive, it immediately shows the internal HD normally.Any help is much appreciated!</blockquote>

[QUOTE="smorrison01, post: 1782002, member: 397677"] [b]Similar problem[/b] Hi, I found this thread where the original post seems quite close to the issue I'm dealing with. I have a Lacie external USB drive that stopped mounting on my MacBook Pro about a week ago. It lights up, makes noises, and spins just as it did when it was working normally; it just won't show up in the Finder. I've switched USB cables and even switched Macs, trying to mount the drive both on my old laptop and the one I got a few months ago. I used the Terminal commands that were suggested on the first page of this thread. The "diskutil list" does show the LaCie drive when it's plugged in, appearing thus: /dev/disk2 (external, physical): #: TYPE NAME SIZE IDENTIFIER 0: Apple_partition_scheme *2.0 TB disk2 1: Apple_partition_map 32.3 KB disk2s1 2: Apple_HFS LaCie 2.0 TB disk2s3 The "diskutil mount /dev/disk2s2" command returns the following: "Unable to find disk for /dev/disk2s2" Since the volume shows up in the Diskutil List as "slice 3" (disk2s3), I tried the above command twice with "disk2s3" as well, and both times got the following: "Volume on disk2s3 timed out waiting to mount" Can anyone please help interpret this? I get that in a general sense, the computer recognizes the disk in some way but not in a way that will allow the disk to mount and me to work with its contents. Also, FWIW, when I open the Disk Utility app with the drive already plugged in, it says it's searching for disks and shows the spinning wheel, but as soon as I turn off the drive, it immediately shows the internal HD normally. Any help is much appreciated! [/QUOTE]

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