W dniu 06.03.2025 o 18:55, Mike Schwab pisze:
About a decade ago you could boot z/OS from the DVD drive in the
mainframe. z/VM had a trial version on DVD you could download.
It was never true.
You could IPL from a DVD inside HMC. HMC is not mainframe.
And you could IPL, but NOT z/OS. It could be standalone program like
ADRDSSU or ICKDSF.
Indeed, you could IPL from DVD which was a part of COD (Customized
Offering Driver) - but see above.
Contrary to z/VM the COD had (has?) to be inserted to HMC optical drive.
Although you could IPL from ftp, further steps required media in HMC.
--
Radoslaw Skorupka
Lodz, Poland
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