Last DAY i have needed upgrade my MDS9124 from 5.0.4(d) to 5.2.8(e).
When i started the upgrade i recaived this message:
disruptive upgrade
O my god!!!! is not possible.
I found the solution… i have resolved with reload the switch (this is siwtch is up from 5 years and the memory is 90% busy).
After reload the upgrade is Non-disruptive