64 MB internal flash upgrade on 3662

jmorgan · ‎10-10-2005

I have a Cisco 3662 Router with 256 Megs of DRAM. I have upgraded from 32 MB internal flash to 64 MB internal flash. When using rommon to load the IOS I get the following error:

rommon 1 > xmodem -y c3660-jk9o3s-mz.124-2.T1.bin

Do not start the sending program yet...

device does not contain a valid magic number

dir: cannot open device "flash:"

WARNING: All existing data in flash will be lost!

Invoke this application only for disaster recovery.

Do you wish to continue? y/n [n]: y

Ready to receive file c3660-jk9o3s-mz.124-2.T1.bin ...

Erasing flash at 0x30000000sector erase failed at location 0x30000000, status 0x

20202020

flash sector will NOT erase...aborting

I can successfully load the image using rommon with the "xmodem -y -r" option to load the image to DRAM and use the memory resident IOS do a "copy tftp flash:".

Do I need to upgrade the rommon chip in order to load the IOS straight to flash. If so what part number do I need to use?

Version information from rommon is as follows:

System Bootstrap, Version 12.0(6r)T, RELEASE SOFTWARE (fc1)

C3660 processor with 262144 Kbytes of main memory

Main memory is configured to 64 bit mode with parity disabled

s.jankowski · ‎10-14-2005

Verify that the configuration register value is correct. The last digit should be a 2 for loading IOS from flash. You can check this by issuing the show version command . If the value is not correct, restore a valid value and reload the router.

If not, u can maually set the config register value using

(config)# config-register 0x 2102 // its a hexavalue which defaults to load image from flash memory.

also, set the cmd in (config)# boot system flash [flash-fs:][partition-number:][filename]

On the Cisco 1600 series, Cisco 3600 series, and Cisco 7000 family routers, this keyword boots the router from a Flash device, as specified by the device: argument. On the Cisco 1600 series and Cisco 3600 series routers, if you omit all optional arguments, the router searches internal Flash memory for the first bootable image