I'm trying to upgrade the IOS on a 1841 router. Since I'm not a Cisco whiz I thought I would check here to make sure I'm not screwing things up beyond repair.
Current version is 12.3(8)YG Upgrading to 12.4(11)T Device has 128M RAM (116736/14336) Flash has 32M
There is not enough room on the flash card for both images currently. Not sure what all of the other files are but will leave them alone.
I have a couple of options: Try replacing the image on the flash card with the newer one... or Boot via TFTP and make sure everything works before replacing the image.
I'm not sure of the safest method. I think I know how to do either but don't have a clue how to recover if I screw things up.
Here's the plan for replacing the image... Backup current IOS image and config (already done) Delete current image from flash to make room for the new image. (delete flash:/) Copy new image to flash. (copy tftp: flash:) Change the boot config. (boot system flash ) Copy running-config to startup-config. (copy run st) Issue reload command.
Change the boot config. (boot system tftp ) Copy running-config to startup-config. (copy run st) If things work correctly, replace the image using the above procedure.
Am I completely clueless or will this work? How do I recover if things go bad?
Searching the Cisco website is like the proverbial needle in a haystack. If anyone can point me to a place with the info I need that would great. I've searched but everything seems to point back to Cisco.