February 8, 20215 yr I have an Unraid server I've been running since 2011 with no issues using i3-540 CPU (LGA1156). I upgraded the CPU to a i5-760 last night. The server booted just fine, and Unraid software is running, but all of the disk drives connected with a SATA controller (LSI 9201-8i) are missing. Unraid is only seeing the six hard drives connected directly to the motherboard. Again the setup is working just fine with the i3-540 CPU installed, and worked fine again after I installed the i3 CPU back. No other changes were made. Any ideas? Did I miss a BIOS setting I should have tweaked? Or did I get a busted i5 CPU?
February 9, 20215 yr Author 12 hours ago, jonathanm said: Can you move the LSI to another slot and try again? I have two, and no free PCI-Express slots. I'm going to try and see if things work better if I stick a cheap PCI graphics card on the empty PCI (non Express) slots.
February 14, 20215 yr Author Turns out this required a change in the syslinux bootloader config file (syslinux.cfg) as described here: Adding pci=realloc=off in the config solved the issue for me. Interesting that merely upgrading the CPU would have caused issues like this with the Linux drivers.
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