My old unRaid 4.5 system went down last month with what appeared to be a controller failure (http://lime-technology.com/forum/index.php?topic=45801.0).  I got my new one completed and have been trying to copy the data off the drives manually to the new system.  I've got an external enclosure and am using a Win10 system with YAReG to view the partitions.  Some of the drives (Seagates) have shown up just fine.  The rest of the ones I've tried so far though show up as unallocated space in disk manager and YAReG doesn't show them at all.  So far every one of those is a Samsung HD240UI   Thing is I've got at least 12 of those in the old array so... I'm getting nervous that the first four haven't seemed to show anything.  Does anyone have any ideas what the hell could be going on?  Is there a better way to do this?

Sometimes external drive adapters can do strange things with drive geometry mappings, so the first thing I'd try is temporarily hooking them up to an onboard sata port. Next thing to try, why not temporarily mount them in the new box with the unassigned devices plugin?

I have 1 free bay right now in my new case.  I don't want to have to reboot every time I need to swap one of the 12 but I will if I have to.  Not sure how to hotswap within Linux though I am fairly certain it's supported.

Ah nm  gave it a try and it does allow me to hotswap!    Now I just have to understand how to actually move those directories over.  Time to learn the plugin, thanks so much for the advice.