I'm having some issues with upgrading my IOS with regards to my Catalyst 4506 switches.
Just to recap, prior to performing the IOS upgrade, I did a "show version" command to see where the old IOS was located, however in the bootflash: line, I didn't see any image filepath. It was blank.
I also did a "show run | include boot system" to see if there were any boot commands that have been entered and I got nothing.
Anyway I decided to just to upload the new IOS to the switch and I issued the "boot system flash bootflash:<new IOS filenaem> command, followed by the "write memory" command and finally reloading the switch.
Unfortunately when the reload was completed, the device was (and is) still pointing to the older IOS instead of the new one.
Any ideas why this might be the case? I didn't delete the older IOS either as it is still in the switch's bootflash.