12-05-2016 01:21 PM - edited 03-08-2019 08:26 AM
I am attempting to upgrade the IOS on recently purchased 3750 switch and this is my first time attempting such a procedure. Currently studying for ICND1 exam.
I uploaded the new IOS and did not have to delete the previous IOS. I wanted to preserve the old IOS for a situation like I am currently find myself.
switch: boot
Loading "flash:c3750-ipbasek8-mz.122-55.SE11.bin"...flash:c3750-ipbasek8-mz.122-55.SE11.bin: no such file or directory
Error loading "flash:c3750-ipbasek8-mz.122-55.SE11.bin"
Interrupt within 5 seconds to abort boot process.
Loading "flash:/c3750-ipbasek9-mz.122-55.SE11.bin"...@@@@
I would like to modify the startup-config to point to the old IOS as I believe I should have that option with it still present on this switch.
Please let me know the commands for this procedure.
/Paul
12-05-2016 01:39 PM
Error loading "flash:c3750-ipbasek8-mz.122-55.SE11.bin"
This error message means the IOS is corrupt.
Before rebooting the switch, make sure the MD5 checksum is compared against the MD5 checksum found in the Cisco website.
12-05-2016 01:48 PM
Hi Leo,
I appreciate your very quick response, but I am still in a pickle with this corrupt IOS and need to get back to the previous version.
Please let me know how to load the old IOS.
Thanks, Paul
12-05-2016 02:17 PM
Performed the following to remove corrupted IOS.
switch: delete flash:c3750-ipbasek9-mz.122-55.SE11.bin
Are you sure you want to delete "flash:c3750-ipbasek9-mz.122-55.SE11.bin" (y/n)?y
File "flash:c3750-ipbasek9-mz.122-55.SE11.bin" deleted
/Paul
12-06-2016 01:36 AM
I'm not sure whether you used copy-paste in your original post, but there's no such thing as "ipbasek8" (only k9) - maybe you mistyped the image name in the boot variable config (although I guess you would have used copy-paste there as well)... at the end of your original post it looks like the switch manages to find the right updated image and starts booting it.
12-06-2016 04:02 AM
Hi Lulian,
Good observation of the "k8" used in the file name, but that was just a typo in the description. Wish it was the case for the Boot command.
I will complete another download of the file with the hope the previous was corrupted in some way.
Thanks, Paul
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