i'm new to macs and the macosx world after using iphone/ipad for many years and i've always been a windows user. currently bought a couple mac mini's to mess around with, one is older macmini which will support up to 10.11 el capitan and a late 2011 which will support on through to 10.13 high sierra. here are current osx on these mac mini older - 10.6 final build mac mini newer - 10.8.5 - mountain lion i'm looking to go back and collect the macos i don't have. waiting on a power brick for the older mini as that one was lost in the mail. when i get that one in i will be able to add el capitan to my account. i currently have 10.12 - sierra and 10.13 - high sierra added to my account. will be adding el capitan. i have the physical media for 10.6 which was included with the older unit so i should be covered through most releases of macos. first question - is it possible to create a usb installer off the new mac mini's recovery partition that has 10.8 on the recovery partition? this would leave me only needing to buy the apple download for 10.7 - lion and try to find some way to get the macos mavericks and mac os yosemite installers that i'm missing. i'm wanting to try a lot of different installs across these two machines and just get a greatest hits of how the os has changed over the years and settle on something a little older that still will work well for the older mini. i did find checksums for the install files to verify if they are correct but i haven't had much luck sourcing these. does anybody know if apple plans to make these available again in the future? --- Post Merged, Oct 18, 2018 --- also possible to pull 10.6 install media off the recovery partition on the older mini? i'm going to try and create usb installer disks for each os and do this testing. i would really like to be able to put a recovery partition back on the hard drive during install as well. also i know it may be a long shot but is it possible to put multiple install images on one flash drive?