Install older macOS in new mac

[beary2teddy]

Am I able to install an older version of macOS in a newly bought mac, if the hardware requirement of the new mac supports the older macOS?

I think all new macs will come with the latest OS, but I need an older one

 

[Glariel]

Am I able to install an older version of macOS in a newly bought mac, if the hardware requirement of the new mac supports the older macOS?

I think all new macs will come with the latest OS, but I need an older one

not able to. the only way is to buy old macs

 

[szeli]

think e oldest needs to be e version e mac came with. but why do u need an older version?