March 10, 20233 yr Hi there, I recently swapped most of my hardware from an almost 13 Year old custom PC to a more actual Dell Precision 5820. The Dell came with two 1TB SSD that I now want to replace my actual 256GB cache drive. My idea was to add one of the SSDs first, have mover to bring all appdata (not having VMs yet) to the new drive and then replace the old one to have a cache pool in RAID1 mode. Unfortunately I never get so far because the moment I add the 1TB SSD and do a reboot I run into a kernel panic. end kernel panic - not syncing: VFS: unable to mount root fs on unknown-block(0,0) I found another post here that sounds similar but does not describe exactly my situation. I don't think I have a faulty flash drive as it boots perfectly the moment I remove the SSD from the system again. Any idea what might cause this? Regards petjek EDIT: forgot to mention I am on v6.11.5, Intel® Xeon® W-2123 CPU @ 3.60GHz, 8GB DDR4 Single-bit ECC RAM Edited May 22, 20233 yr by petjek
March 10, 20233 yr Community Expert Strange that just having the SSD installed would cause that error, did you try both UEFI and CSM boot?
March 10, 20233 yr Author Erm, what is CSM boot? I think UEFI boot is currently disabled so probably it is CSM although I don't know what it is.
March 10, 20233 yr Author Okay, UEFI probably was the problem here. I checked BIOS settings, activated UEFI and set the flash drive as the only boot device. First boot led to another error at first but eventually the server booted correctly. Thx!
March 10, 20233 yr Community Expert Dell computers/servers sometimes have issues booting Unraid UEFI, hopefully yours will keep booting reliably.
May 22, 20233 yr Author Well, no it doesn't. I just updated the Nvidia driver and with the next restart the same problem reoccurs. I made some adjustments in BIOS like switching from UEFI to legacy boot. Unfortunately that didn't change a thing. Actually I think of following the advice to create a new boot stick. I found that on reddit a lot. I was able to copy the config folder from the original stick to my Mac and will have the new stick created soon. Do I have to copy anything else but the config folder?
May 22, 20233 yr Community Expert 3 minutes ago, petjek said: Do I have to copy anything else but the config folder? Nope
May 22, 20233 yr Author Yay! That worked flawless! Is there any need to change settings back to UEFI boot? Any advantages doing so?
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