Re: 2500 series router booting problem

prasanthpk · ‎02-12-2002

why my router always boots from rom rather than from flash.config reg is correct but once we try to access flash as "sh version" or "try to copy flash contents" shows it is a read only.the same error is received when i try to load IOS from a tftp server

pls give me a solution

millerv · ‎02-12-2002

how much flash ? If you have 16 meg, then

partition flash 2 8 8

the "side" with the ios in it remains read only,

the other side will be read write.

what do your boot statements say ?

prasanthpk · ‎02-12-2002

here is the message i received

Router(boot)#sh ver

Cisco Internetwork Operating System Software

IOS (tm) 3000 Bootstrap Software (IGS-BOOT-R), Version 11.0(10c)XB2, PLATFORM SP

ECIFIC RELEASE SOFTWARE (fc1)

Compiled Mon 05-Oct-98 10:52 by jaturner

Image text-base: 0x01010000, data-base: 0x00001000

ROM: System Bootstrap, Version 11.0(10c)XB2, PLATFORM SPECIFIC RELEASE SOFTWARE

(fc1)

Router uptime is 1 minute

System restarted by power-on

Running default software

cisco 2500 (68030) processor (revision L) with 6144K/2048K bytes of memory.

Processor board ID 22647777, with hardware revision 00000000

X.25 software, Version 2.0, NET2, BFE and GOSIP compliant.

2 Ethernet/IEEE 802.3 interfaces.

2 Serial network interfaces.

32K bytes of non-volatile configuration memory.

8192K bytes of System flash (Device not programmable)

Configuration register is 0x2102

Router(boot)#sh flash

System flash directory:

No files in System flash

[0 bytes used, 8388608 available, 8388608 total]

8192K bytes of System flash (Device not programmable)

Router(boot)#copy tftp flash

ERR: Device in READ-ONLY state

javedmma · ‎02-13-2002

Hi Prasanth,

Flash memory provides write protection against accidental erasing or reprogramming.

Some platforms have a write-protect jumper which can be removed to prevent reprogramming of Flash memory. You must install the jumper when programming is required.

Some platforms have write protect switched on Flash memory cards that you can use to protect data. You must set the switch to unprotected to write data to the Flash memory card.

Refer to your hardware documentation for information on security jumpers and write protect switches.

Good Luck,

Javed

amitsonik · ‎02-17-2002

It seems that there is no file in the flash, so even though the specified register entry is correct, the router will not load from the flash.

Try using the following syntax from the ROM Monitor. IF it works it will help you load a copy of flash. I assume that you do have a back-up or a copy of flash that is compatible with this router. Just type the following commands on the left with a value as described on the right.

IP_ADDRESS= ip address of the router

IP_SUBNET_MASK= SUBNET MASK OF THE NETWORK

DEFAULT_GATEWAY= IP ADDRESS OF THE DEFAULT GATEWAY

TFTP_SERVER= IP ADDRESS OF THE TFTP SERVER

TFTP_FILE= TFTP FILE NAME

THEN type tftpdnld, and the above information will be executed.

I hope it was helpful.

Thanks,

Amit Sonik