switch ios gone after reload

jroughan · ‎02-18-2003

lab switch ios is gone after reload.

xmodem fixes the ios problem. But how

to prevent the ios from vanishing after reload?

Anyone experience this problem.?

( not the config) the ios.

bootflash:cat2948g-in-mz.120-18.W5.22b.bin

after reload we are in rommon>

any ideas?

a.pawar · ‎02-19-2003

There could be two reasons for switch going into ROMMON after reboot. Either the image is corrupted or the boot reg setting is incorrect. Please check the above ; it is impossible for the image to vanish out of the switch

jroughan · ‎02-25-2003

after reload the switch enters rommon mode, and appears to be unable to load the ios. here is the message:

ROMMON: Cold Reset frame @0x00000000

ROMMON: Reading reset reason register

ROMMON: Valid NVRAM config

System Bootstrap, Version 12.0(7)W5(15a) RELEASE SOFTWARE

Reading monitor variables from NVRAM

ROMMON: Initializing exceptions

ROMMON: Initializing TLB

ROMMON: Initializing cache

ROMMON: Sizing and zeroing main memory ... 64 MBytes

ROMMON: Sizing non-volatile memory ... 128 KBytes

cat2948g platform with 65536 Kbytes of main memory

loadprog: error - on read during ELF program load

requested 3291460 (0x323944) bytes, got 20032 (0x4e40)

boot: cannot load "bootflash:"

*** now I have loaded a new ios with xmodem:

Router#dir

Directory of bootflash:/

1 -rw- 39420 cat2948g-in-mz.120-18.W5.22b.bin

Router#cd ?

bootflash: Directory name

null: Directory name

nvram: Directory name

system: Directory name

how do I prevent the switch from entering rommon mode after reboot? ***

I think the bootloader is having issues.

earfood · ‎02-19-2003

the problem could be a loss of stable power to the NVram in the switch. (bad backup battery) The 2948 should have a flash card port. save the image on it and change boot statment.

efrahim · ‎02-19-2003

Did you lose the image or just ended up in the ROMMON..

WHen in the ROMMON, do dir bootflash: and "set"

and before rebooting, make sure do dir bootflash: and sh boot to make sure boot variables are correct ,,,,

Prashanth Krishnappa · ‎02-19-2003

You'll need to use TFTP to copy the file to bootflash after XMODEM recovery.

jroughan · ‎02-25-2003

umm, maybe your right...but I don`t think so. After xmodem the file is loaded to bootflash. I think it has to do with the bootloader and possibly the config-reg.

here is some more info if you are curious: