Use the following procedure to remove a software build for the switch.
Note
You can store up to 6 software releases on most switches. When the limit is reached, you are prompted to remove one release before you can proceed with adding and activating a new software release.
You can store a maximum of 2 software releases on the 5420 Series. When the limit is reached, the software displays a confirmation to overwrite the non-primary release before you can install a new software release.
For more information, see Upgrade the Software.
Remove the software build:
Switch:1>enable Switch:1#software remove w.x.y.z