If there are two IOS files in my flash, which one to use

[omal]

Hi

Can someone please tell me, that if there are two IOS files exist in my flash, or in other words, even if I upload a new IOS, it still uses the old IOS to boot.

Can you please tell me without deleting the old IOS how can I tell my device to use the new one that I uploaded?

If there are seperate commands, can you please tell me for 2500s, 1700s, 2950s and 3550s routers and switches?

Thank you in advance!

[Joe Clarke]

Under config t:

2500 and 1700:

boot system flash

e.g. boot system flash flash:c1700-y-mz.124-1a.bin

2950 and 3550:

boot system

e.g. boot system flash:c3550-ipbasek9-mz.122-25.SEF

[omal]

Hi

Thanks a lot for your reply. I think it is correct. I will try that out when I get back to work in just a couple of days.

Many thanks!

[omal]

Hi

Thanks a lot for both of you in trying to resolve my issue. What Clarke said worked.

Thanks a lot again to both of you for your valuable time.

[michaelatef]

by default the device should boot up using the new IOS , but the commands are also helpfull.