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<blockquote data-quote="krs" data-source="post: 1905012" data-attributes="member: 67742">I wonder if anyone has some ideas how to approach this issueI have an external USB 3.0 2.5 inch spinner drive with a bunch of videos on it.Videos are in .avi, .mp4 and .mkv format.The drive shows up on the desktop, when I open the external drive all the videos show up but none of them plays.Message I get is that the problem is a broken or missing index.I have had that type of issue before but only on one specific video and VLC can sometimes repair it.Here it happens with every video of all types.Before I break open the external drive to see if the issue is the SATA USB 3.0 bridge I thought I would post here for ideas what to try.What I tried so far:1. Used a different USB 3.0 cable - no change2. Tried a different USB 3.0 port on the Mac Mini (Mini is a 2012 running Mojave) - no change3. Tried copying one video to the desktop - won't copy.The icon shows up on the desktop but the progress bar just sits at Copied zero bytes4. Tried Disk Utility to repais disk - can't repair because isk can't be unmountedI also can't eject the disk, clicking on eject does nothing - I have to unplug it and then get the error message &quot;Disk not ejected properly&quot;The external has only videos on it so I can't even try non-video files to see if they open</blockquote>

[QUOTE="krs, post: 1905012, member: 67742"] I wonder if anyone has some ideas how to approach this issue I have an external USB 3.0 2.5 inch spinner drive with a bunch of videos on it. Videos are in .avi, .mp4 and .mkv format. The drive shows up on the desktop, when I open the external drive all the videos show up but none of them plays. Message I get is that the problem is a broken or missing index. I have had that type of issue before but only on one specific video and VLC can sometimes repair it. Here it happens with every video of all types. Before I break open the external drive to see if the issue is the SATA USB 3.0 bridge I thought I would post here for ideas what to try. What I tried so far: 1. Used a different USB 3.0 cable - no change 2. Tried a different USB 3.0 port on the Mac Mini (Mini is a 2012 running Mojave) - no change 3. Tried copying one video to the desktop - won't copy.The icon shows up on the desktop but the progress bar just sits at Copied zero bytes 4. Tried Disk Utility to repais disk - can't repair because isk can't be unmounted I also can't eject the disk, clicking on eject does nothing - I have to unplug it and then get the error message "Disk not ejected properly" The external has only videos on it so I can't even try non-video files to see if they open [/QUOTE]

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