NVRAM problem

NV: Invalid Pointer value(6357F3CC) in private configuration structure showing that the nvram has a stale, unerased private-configuration pointer in NVRAM.

It will then enter the system configuration dialog.

Answer "no" and you will see following errors:

--- System Configuration Dialog ---

Would you like to enter the initial configuration dialog? [yes/no]: no



Press RETURN to get started!



*Dec 19 05:38:46.743: Downloading Microcode: file=system:pxf/c10k-15-ucode.101.0.0.0, version=101.0.0.0, description=Experimental Software created Mon 27-Nov-06 21:44 by aiding in view aiding-clipper_ucode_pcha

*Dec 19 05:38:47.395: NV: Invalid Pointer value(201A9BC4) in private configuration structure

*Dec 19 05:38:47.403: NV: Invalid Pointer value(201A9BC4) in private configuration structure

*Dec 19 05:38:47.407: %SYS-4-NV_BLOCK_INITFAIL: Unable to initialize the geometry of nvram

Router#dir nvram:

Directory of nvram:/

No files in directory

No space information available

Router#

Problem Symptoms

The router boots and displays the error message:

NV: Invalid Pointer value(6357F3CC) in private configuration structure

then goes into the system configuration dialog.
Workaround/Solution

Before upgrading to 12.3(21)BC, with a 12.3(17)BC or older release image :

   1.

      copy {startup|running}-config disk0:saved-config
   2.

      erase /all nvram:
   3.

      write memory
   4.

      (optional) copy disk0:saved-config startup-config
   5.

      Reload with 12.3(21)BC image.

Note: erase nvram: is inadequate and may leave a stale pointer in private-config in nvram. Hence the need to use erase /all nvram: to clean nvram completely.

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pls check the ios version first