If iDRAC FW is not latest can you install 4.40.00.00 FW on iDRAC and check the behavior. You can get latest iDRAC FW from below link [URL] 
When running racadm get BIOS command, the categories are listed, but echo $? shows error 17. strace shows the following - munmap(0x7f0ba2809000, 2517272) = 0munmap(0x7f0ba2a70000, 5632000) = 0times({tms_utime=0, tms_stime=1, tms_cutime=0, tms_cstime=0}) = 429485782exit_group(17) = ?+++ exited with 17 +++ The version of srvadmin-cm-9.5.0-20.09.00.x86_64 It's on Dell PowerEdge R7515 has AMD EPYC 7402P 24-Core Processor
racadmn get BIOS returning error 17