In order to upgrade to the dizzying heights of Catalina your Mac must have Mac OS X Mavericks as its minimum OS
requirement. As you are on Lion you will need to do an intermediate OS install. Mavericks is no longer available.
You can still get El Capitan (10.11.6) from here, How to upgrade to OS X El Capitan - Apple Support
Os X Lion Server Update Status
- Apple on Wednesday released an update to its desktop operating system. OS X Lion 10.7.4 contains a number of minor fixes as well as a security update that addresses the FileVault password security issue uncovered recently. The bug made users’ passwords vulnerable by storing them in plain text format. Apple’s 10.7.4 release notes are as follows: The 10.7.4 update is recommended for all OS X.
- OS X Lion Server Software Update Server - save bandwidth and time? 16 posts WhatsWith. Wise, Aged Ars Veteran Registered: Aug 13, 2010. Posted: Thu Apr 12, 2012 11:40 am.
- Download the latest version of OS X Lion Server Update for Mac - Update for OS Lion Server to 10.7.5. Read 2 user reviews of OS X Lion Server Update on MacUpdate.
go to Section 4 and click on Get Mac OS X El Capitan, this will download a .dmg file which you then
double-click to start the installation.
After El Capitan is installed then you can upgrade to Catalina, but if you are not aware yet Catalina does not run 32bit apps.
Mac OS X 10.7 (Lion Server) Released: July 20, 2011 In releasing the developer preview of Mac OS X Lion in February 2011, Apple indicated that beginning with Lion, Mac OS X Server would be bundled with the operating system and would not be marketed as a separate product. I have a mac mini server mid 2011 with OS X Server Lion 10.7.5. I now want to upgrade to macOS Sierra, that failed because I first need to upgrade to OS X 10.10 or 11 and after that to OS X Server version 4 or 5. However, OS X 10.10 or 11 is no longer on the appstore or apple support site.
So I would suggest you install Mojave again and all the apps you would use, Upgrade to macOS Mojave - Official Apple Support
Once you have determined what apps you had previously on Mojave that were 32bit and whether or not the developers of those apps are updating them to 64bit then you can consider Catalina. Use this app, https://www.stclairsoft.com/Go64/ to check for 32bit apps.
Oct 30, 2019 2:19 AM
In order to upgrade to the dizzying heights of Catalina your Mac must have Mac OS X Mavericks as its minimum OS
requirement. As you are on Lion you will need to do an intermediate OS install. Mavericks is no longer available.
You can still get El Capitan (10.11.6) from here, How to upgrade to OS X El Capitan - Apple Support
go to Section 4 and click on Get Mac OS X El Capitan, this will download a .dmg file which you then
double-click to start the installation.
After El Capitan is installed then you can upgrade to Catalina, but if you are not aware yet Catalina does not run 32bit apps.
So I would suggest you install Mojave again and all the apps you would use, Upgrade to macOS Mojave - Official Apple Support
Once you have determined what apps you had previously on Mojave that were 32bit and whether or not the developers of those apps are updating them to 64bit then you can consider Catalina. Use this app, https://www.stclairsoft.com/Go64/ to check for 32bit apps.
Os X Lion Server
Oct 30, 2019 2:19 AM