On 11/26/2017 9:59 PM, Timothy Sipples wrote:
Unofficially, there was a report back in 2009 in this forum that OS/390 2.4 IPL'ed under z/VM 5.3 on an IBM z990 machine. There were some restrictions (512MB memory or less, 1 CP only, and a special z/VM setting).
That might have been from me. We ran, and continue to run, old operating systems using z/VM as a bridge to our newer hardware (at the moment z13s).
Our policy is to go back only ten years, so OS/390 2.5 fell off our RADAR long ago...
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