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upgrading the IOS


I need to upgrade my CISCO switch IOS but I have no Available space in the flash for the 2 IOS. can I delete the available IOS and in the same session I downloaded the new IOS or the switch will crach

my cisco switch is 3560-48PS

Everyone's tags (1)
Hall of Fame Community Legend

Post the complete output to

Post the complete output to the command "dir".

What IOS version & what feature set are you trying to upgrade to?

Dear Leo,

Dear Leo,

the below is the dir

Directory of flash:/

2 -rwx 5 Mar 1 1993 09:13:45 +00:00 private-config.text
3 -rwx 1036 Mar 1 1993 01:43:42 +00:00 vlan.dat
4 -rwx 9314 Dec 24 1993 07:19:13 +00:00 config.old
5 drwx 192 Mar 1 1993 00:09:08 +00:00 c3560-ipbase-mz.122-35.SE5
463 -rwx 5858 Mar 1 1993 09:13:45 +00:00 config.text

15998976 bytes total (6928384 bytes free)

I need to upgrade the IOS to

  • c3560-ipbasek9-mz.122-55.SE10

to Support the service policy  so to be able to rate limit a special interface'

Hall of Fame Community Legend

Ok, use this command:

Ok, use this command:  archive download-sw /over tftp://<TFTP IP address>/IOS_filename.tar

Remember, use the IOS file with the TAR file extension.

Leo I'm in the same situation

Leo I'm in the same situation with a 3550. My question is if i load the K9 ios does it require me to enter a license key ?

regards Troy


  normally there is no

  normally there is no special requirements needed to download a K9 file .

Hall of Fame Community Legend

As what Glen (below) stated,

As what Glen (below) stated, no special requirement needed.  You can upgrade to K9.

VIP Advisor

If this is a newer Cisco 3650

If this is a newer Cisco 3650 then;

You should be able to do a "software install file ..." and install it that way.  It should cleanup and remove any files to create enough space for the installation.

I often put the new software on a usb memory key, plug it into the switch, and install it from there.

If this is an older 3560 switch, use the "archive download-sw ..." command with a full install bundle.  It will remove the old software as needed.

Dear Philip,

Dear Philip,

how i can use the archive download-sw command. as i need to upgrade


  • c3560-ipbase-mz.122-35.SE5


  • c3560-ipbasek9-mz.122-55.SE10 (11.5 Mbyte)

and the only available memory is (6928384 bytes free)

VIP Advisor

The archive command should

The archive command should remove the old software for you.

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