12-30-2014 08:18 AM - edited 03-07-2019 10:02 PM
After entering the command "boot enable-break" in configuration mode ("Enable Break" under "show boot" now shows "yes") the switch will stop loading IOS if you send it a break via the console port while it is loading the IOS. It will then give the message "Interrupt within 5 seconds to abort boot process." What key do I hit at this point to interrupt it? I've tried another break and all the normal Cisco interrupt key sequences but it always continues to boot 5 seconds later. Relevant portion of boot log follows:
...done Initializing Flash.
Boot Sector Filesystem (bs:) installed, fsid: 3
Loading "flash:c3550-ipbasek9-mz.122-44.SE6/c3550-ipbasek9-mz.122-44.SE6.bin"...####################################################################################################################################################################################################bad mzip file, unknown zip method
Error loading "flash:c3550-ipbasek9-mz.122-44.SE6/c3550-ipbasek9-mz.122-44.SE6.bin"
Interrupt within 5 seconds to abort boot process.
Loading "flash:/c3550-ipbasek9-mz.122-44.SE6/c3550-ipbasek9-mz.122-44.SE6.bin"...#######################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################
File "flash:c3550-ipbasek9-mz.122-44.SE6/c3550-ipbasek9-mz.122-44.SE6.bin" uncompressed and installed, entry point: 0x3000
executing...
01-05-2015 05:28 AM
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It may require a "break" signal, from you terminal, and different terminal emulators handle that, if they support it, differently.
See if this helps: http://www.cisco.com/c/en/us/support/docs/routers/10000-series-routers/12818-61.html
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