Installing macOS 26 on Partition

Hello,

I’m wanting to install macOS 26 on a partition on my MacBook Pro so I can use the fully featured Xcode Beta.

I was able to create the partition but am having trouble figuring out how to install the operating system on the partition because on the developer downloads site there is only .ispw files.

What are the steps to do this successfully? Thanks.

Kevin

Install macOS Sequoia onto the partition and get it setup minimally, then enable beta updates in that partition's System Settings, and go through the install.

Installing macOS 26 on Partition
 
 
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