Does Mdadm -Q /dev/data2 or mdadm -Q /dev/sdX (whatever th actual disk is) show the disk is part of an array?
cat /proc/mdstat does that show the array is reassembling? Take a look at the commands here: https://www.digitalocean.com/community/tutorials/how-to-manage-raid-arrays-with-mdadm-on-ubuntu-22-04 I've never used a probox but it appears to have no intelligence and merely acts as a USB drive enclosure for multiple disks, so I'm assuming your disks show up as individual USB disks???? Ted -----Original Message----- From: PLUG <[email protected]> On Behalf Of Rich Shepard Sent: Thursday, March 23, 2023 2:12 PM To: [email protected] Subject: [PLUG] External drive issue I turned off the desktop and removed the power cord to replace the video card. The MediaSonic Probox also powered down. When I plugged in the desktop and turned it on, along with the Probox, the two single drives in the Probox (/data2 and /data3) automatically mounted, but the 2-drive logical volume, /dev/md0 did not mount. When I try to mount it manually I find that it /doesn't exist. I've gone through this video card swapping several times this week with the LV mounting, either automatically of when I do so manually. Where do I start looking for the reason it's not now seen? Rich
