catalyst
Upgrading IOS on Cisco 3750 switch stack gotcha
Command to set boot system switch all flash failed
If you are using upgrading the Cisco IOS version on the switch stack manually you normally set the boot variable on the switches to use the new IOS file you have uploaded. If your switch stack has more than one member (it isn't really a stack if it doesn't) you must copy the ios to the flash of each member switch.
Otherwise when you issue the
boot system switch all flash:/c3750-ipbasek9-mz.122-35.SE5.bincommand
Cisco Password Recovery procedure 3750:
When recovering a Cisco 3750 a flash error can occur
If you ever have to recover a Cisco 3750 switch or switch stack password there are some good instructions on the cisco web site on how to do this. However, part of the process involves accessing file(s) on the flash memory of the switch. Occasionally you might run into a problem when attempting to access the flash memory. The switch may report "unable to stat flash:/: invalid" argument.
For example when you type
dir: flashyou may receive and error which says