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New Member

HELP!!! WLC 2006

dear all!!

WLC 2006 lost the ios,and started with grub> prompt,what can i do to recovery the ios??

12 REPLIES
Gold

Re: HELP!!! WLC 2006

You will need to contact TAC.

Hall of Fame Super Red

Re: HELP!!! WLC 2006

Hi jianhua,

Dan is most correct here (5 points for your good work Dan!) I just thought that I would add this info for your TAC case. It may speed things up a bit.

CSCsd52483

Controller stuck at grub> prompt

Symptom:

A WLC2006, WLC2106 or NM-AIR-WLC6 may seen to display a "grub>" prompt on the console port. It will be unable to boot the

WLC software and will not be able to operate normally.

Workaround:

Replace the hardware.

Hope this helps! And best of luck.

Rob

New Member

Re: HELP!!! WLC 2006

thank you very much!!

New Member

Re: HELP!!! WLC 2006

Some very good new for everyone who has experienced this very frustrating error. I have found a resolution to this problem (well it fixed my issue, which certainly seems extremely similar to this one)...

Type what you see following the Grub command prompt...

Symptom:

A WLC526, WLC2006, WLC2106 or NM-AIR-WLC6 may seen to display a

"grub>" prompt on the console port. It will be unable to boot the

WLC software and will not be able to operate normally.

Workaround:

For AIR-WLC526 / AIR-WLC2006 / AIR-WLC2106:

From the grub prompt use the following commands to boot primary image

grub> root (hd0,1)

grub> kernel /bzImage-primary root=/dev/ram ramdisk_size=32768 printk=yes

console=ttyS0,9600

grub> initrd (hd0,1)/initrd-primary

grub> boot

From the grub prompt use the following commands to boot secondary image

grub> root (hd0,1)

grub> kernel /bzImage-secondary root=/dev/ram ramdisk_size=32768 printk=yes console=ttyS0,9600

grub> initrd (hd0,1)/initrd-secondary

grub> boot

Then TFTP download an official version of WLC code, to install a bootloader

for the WLC.

This was the fix that I have been searching for - I hope it works for you too.

KR

Rob T.

New Member

Re: HELP!!! WLC 2006

Hi guys,

I have the same problem, but the grub does not see (hd0, 1), it can only see (hd0), and when I enter there, and use the kernel command, then the grub gives this error message:

"Error 17: Cannot mount selected partition"

grub cannot do some of the commands, in the help items, there are many options, but in order to do that it needs to mount the kernel.

Any ideas is appreciated.

amir

Hall of Fame Super Gold

Re: HELP!!! WLC 2006

Hi Amir,

1. No spaces in the "(hd0, 1)";

2. If all else fails, raise a Cisco TAC.

New Member

Re: HELP!!! WLC 2006

This is what I get:

grub> root (hd0,1)

Error 5: Partition table invalid or corrupt

Regards

Amir

Hall of Fame Super Gold

Re: HELP!!! WLC 2006

Hi Amir,

Raise a Cisco TAC.

New Member

Re: HELP!!! WLC 2006

I know someone who had this issue.  She took the cover off the controller and saw the compact flash module.  It wasn't seated properly, so she pulled it out and put it back in and closed the unit up.... and it booted. 

New Member

Re: HELP!!! WLC 2006

Hello,

When I put this sentence:

initrd (hd0,1)/initrd-primary

I get the following error:

Error 15: File not found

If I try to boot the secondary image, it starts but I got an error that can not create some files because the system is Read-only.

Any ideas?

Hall of Fame Super Gold

Re: HELP!!! WLC 2006

Raise a Cisco TAC to get your appliance RMA-ed.

New Member

HELP!!! WLC 2006

Fixed by opening unit and reseating flash!!!

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