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Cisco Bug: CSCvu14656 - M5 servers BIOS results in boot loop at testing memory - Server will not POST

Last Modified

Oct 14, 2020

Products (1)

  • Cisco Unified Computing System

Known Affected Releases

4.0(4h)C 4.1(1c)C

Description (partial)

Symptom:
M5 servers are stuck during boot, looping in at "Testing Memory" after BIOS Upgrade

Conditions:
This issue is recently introduced regression in 4.0(4h) and 4.1(1c) UCSM bundle releases.
Following BIOS releases are impacted, so any customer who is trying to upgrade to below BIOS may see this issue.

IC/HP-MR3 patch:
C240M5.4.0.4r.0.0305200743
C220M5.4.0.4p.0.0224200755
B200M5.4.0.4l.0.0305202307
B480M5.4.0.4m.0.0305202307
S3X60M5.4.0.4o.0.0224200755

JB patch:

C220M5.4.1.1c.0.0404202345
C240M5.4.1.1c.0.0405200025
B200M5.4.1.1c.0.0404202345
B480M5.4.1.1c.0.0405200025
S3X60M5.4.1.1c.0.0405200025
This has been encountered during upgrades to critical infrastructure. The version, 4.0(4h) is explicitly required by the version of HX (3.5(2h)) being deployed.
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