Smartctl Open Device Dev Sda Failed Dell Or Megaraid Controller Please Try Adding 39--d Megaraid N 39- May 2026

smartctl -a -d megaraid,N /dev/sda Where N = physical disk number (0, 1, 2, ...) 1. Find physical drive numbers smartctl --scan -d megaraid Or:

This error occurs when smartctl cannot directly access a physical disk behind a Dell PERC (MegaRAID) controller. The drive is hidden behind the RAID controller’s virtual disk layer. Add the MegaRAID device type with the physical drive number: smartctl -a -d megaraid,N /dev/sda Where N =

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