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August 5th, 2025 14:04
Dell VRTX M520 Blade stuck on "iDRAC Booting" after failed firmware update
Hey everyone,
I’m currently dealing with a frustrating issue involving one of my Dell PowerEdge M520 blades in a Dell VRTX chassis. After attempting a firmware update on the blade which stuck for days, it no longer boots (I wanted to upgrade to 2.65.65). The LCD display on the VRTX permanently shows:
⚠️ Problem:
The blade in Slot 2 is stuck on "iDRAC Booting" and won’t proceed.
CMC detects that a blade is inserted, but shows no details (no iDRAC version, no hostname, etc.).
The power LED on the blade pulses green (standby).
No access to iDRAC Web UI, RACADM, BIOS, or Lifecycle Controller.
Other M520 blades with the same iDRAC version work fine in the same chassis.
✅ Things I’ve tried so far:
Power-cycled the blade and chassis multiple times.
Pulled the blade for a few minutes (cold reset), reinserted it → no change.
NVRAM reset via DIP switch → still stuck on "iDRAC Booting".
Tried issuing
racadm racresetvia CMC for the blade → fails, since iDRAC is unreachable.Using the recovery method by placing
firmimg.d7(iDRAC 2.65) on a FAT32 vFlash card and inserting it into the blade
Any help or experiences would be greatly appreciated 🙏
Thanks in advance!



DELL-Charles R
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August 5th, 2025 18:14
Hello,
You have done some thorough troubleshooting.
If the firmimg.d7 Recovery Fails and does not complete the recovery process:
Try a Different chassis slot if available.
Lastly you may try minimum to post configuration.
Minimum to post:
One CPU in CPU slot 1 > if it doesn't complete post try the second processor in CPU1
One Memory DIMM in slot A1 > if it doesn't complete post try a different DIMM in A1
No Mezzanine Cards
No HDD Backplane
No HDD's
If the blade still does not Post correctly:
Techvie
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August 5th, 2025 18:36
Hey Charles!
Thank you for your answer. I just tested the minimal post configuration without no luck. Also I tried another slot in the chassis. The SD card is the original vFlash 8GB card from DELL. So this shouldn't be a problem.
That's pretty wild, that a simple IDRAC upgrade can break the whole motherboard at a minor upgrade...