Difference between revisions of "Recovering from a corrupt IOS image"
From Peter Pap's Technowiki
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switch: | switch: | ||
| − | You have a corrupt IOS image! To recover you will need Microsoft Windows HyperTerminal to perform an xmodem transfer of a new IOS image to the switch (obviously you can use other terminal emulators etc, but you'll get no help from me :-). This method has been tested with a Cisco 3750G. You can see more specific info for different switch models [ | + | You have a corrupt IOS image! To recover you will need Microsoft Windows HyperTerminal to perform an xmodem transfer of a new IOS image to the switch (obviously you can use other terminal emulators etc, but you'll get no help from me :-). This method has been tested with a Cisco 3750G. You can see more specific info for different switch models [http://www.cisco.com/en/US/products/hw/switches/ps628/products_tech_note09186a0080169696.shtml]. |
1. Connect to the switch with HyperTerminal with these the settings: | 1. Connect to the switch with HyperTerminal with these the settings: | ||
Revision as of 04:42, 7 March 2011
This is a bit of nastiness! You have a switch that refuses to boot. When you watch what's happening on the console you see errors like this:
Error loading "flash:c3750-k9-mz.122-44.se2.bin" Interrupt within 5 seconds to abort boot process. Boot process failed... switch:
You have a corrupt IOS image! To recover you will need Microsoft Windows HyperTerminal to perform an xmodem transfer of a new IOS image to the switch (obviously you can use other terminal emulators etc, but you'll get no help from me :-). This method has been tested with a Cisco 3750G. You can see more specific info for different switch models [1].
1. Connect to the switch with HyperTerminal with these the settings:
Baud: 9600 Data bits: 8 Parity: None Stop bits: 1 Flow control: None
2. If the switch is not already at the switch: prompt, remove the power cord. Hold down the MODE button on the front of the switch and re-insert the power cord.
