I am looking for a macOS Mojave installer. I need to create a virtual volume to use some 32bit apps for some data transfer. The link on Apple’s site takes me to the App Store and my Mac won’t let me download from there. is there another way to get an .iso file?
installinstallmacos.py is a Python script which needs to be run from the command line in Terminal. It is the easiest way to download older versions of macOS.
I highly recommend keeping older versions around if you think you might ever need them, because Apple only keeps making it more and more difficult to download them.
installinstallmacos.py downloads directly from Apple’s servers, using Apple’s own update servers, and is maintained by people who do large-scale Apple I.T. for a living, so it is completely trustworthy, IMO.
You can learn more about it here:
If you need help running a command line program in Terminal, here are some tips:
-
Download
installinstallmacos.pyfrom this link - you may want to right-click on that link and choose ‘Save As’ or ‘Download Link’ or similar. I will assume thatinstallinstallmacos.pyis saved to your ~/Downloads/ folder, but you may want to move it elsewhere once it is done. -
Once it has been downloaded, you will need to make it “executable” (
chmod 755) and then run it. You can accomplish this by pasting the following commands in Terminal. (Again, if you have saved the file somewhere other than~/Downloads, adjust this accordingly):cd ~/Downloads/ chmod 755 installinstallmacos.py sudo installinstallmacos.py
Note: The sudo command will prompt you to enter your login password for your Mac. It will not appear on the screen as you type, for security purposes.
After sudo installinstallmacos.py it will begin its work.
You will see several lines that start with Downloading https://swdist.apple.com/content/downloads/…
Once it compiles all of the information, it will present you with a list of available downloads. On my Mac, it looked like this:
# ProductID Version Build Post Date Title
1 001-15219 10.15.5 19F2200 2020-06-15 macOS Catalina
2 001-68446 10.15.7 19H15 2020-11-11 macOS Catalina
3 001-04366 10.15.4 19E2269 2020-05-04 macOS Catalina
4 071-08935 11.2.2 20D80 2021-03-01 macOS Big Sur
5 061-86291 10.15.3 19D2064 2020-03-23 macOS Catalina
6 041-91758 10.13.6 17G66 2019-10-19 macOS High Sierra
7 041-88800 10.14.4 18E2034 2019-10-23 macOS Mojave
8 071-14766 11.2.3 20D91 2021-03-08 macOS Big Sur
9 061-26589 10.14.6 18G103 2019-10-14 macOS Mojave
10 071-05432 11.2.1 20D75 2021-02-15 macOS Big Sur
11 001-51042 10.15.7 19H2 2020-09-24 macOS Catalina
12 001-36735 10.15.6 19G2006 2020-08-06 macOS Catalina
13 001-57224 10.15.7 19H4 2020-10-27 macOS Catalina
14 041-90855 10.13.5 17F66a 2019-10-23 macOS High Sierra
15 061-26578 10.14.5 18F2059 2019-10-14 macOS Mojave
16 001-36801 10.15.6 19G2021 2020-08-12 macOS Catalina
Choose a product to download (1-16):
For Mojave, you would want to enter 9 and press Enter, but note that it probably not be #9 when it appears on your computer! So be sure to choose whichever one shows ‘macOS Mojave’ and has the version number 10.14.6. (Notice that lines #7 and #15 are also Mojave, but they are for earlier versions, which you probably do not want.)
Downloading it will take awhile, but just let it run. When it is finished, you should have a .dmg in your ~/Downloads/ folder, or whatever folder the installinstallmacos.py script is in.
I’ve run into problems with trying to install saved versions of MacOS where it says the copy is invalid (or similar). Guessing that my version has an old certificate.
That could be. I believe there were a bunch of certificates that expired last October. I use the script above to re-download newer versions.