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-rwxr--r-- 1 root system 3380969472 Apr 02 2020 7200-04-01_1of2.iso -rwxr--r-- 1 root system 4168876032 Apr 02 2020 7200-04-01_2of2.iso
You will find a hard limit in the script file /usr/sbin/mkdvd DVD_SIZE=4293918720 ## Less than 4.095 GB DVD-R limitation
No, it is unfortunately not sufficient to increase this limit.
But in times of USB sticks and the "Virtual Optical Library" in VIO servers, it should be possible to create ISO files larger than 4 GB. Best example is the official flash ISO file from AIX 7.2 (AIX_v7.2_Install_7200-04-01-1939_flash_112019.iso), which is over 7 GB in size!
So I would like that the mkcd / mkdvd script, which in turn uses the "mkisofs" command, to be adapted so that the 4 GB limitation can be removed by a command option. And also the smitty menu (smitty mkdvd) would have to be modified to include this option.
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