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Why the NOS firmware upgrade fails?

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TitleWhy the NOS firmware upgrade fails?
Question
Why the NOS firmware upgrade fails?
Environment
  • NOS ALL
Answer
The Compact Flash corruption in the secondary partition could cause the upgrade to fail and restore to the old code. 

In fwdl.log you will find the below log 
 
Aug 30 21:20:25 fwcmit:SW/1 Repairing the secondary partition now.

Please run bad block test to confirm there is a Compact Flash corruption 

How to check a VDX for CF Issue using the “badblocks” command

If there is no bad blocks found please contact GTAC.
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