Launch System Preferences. Click on Software Update. Let the page refresh for a few minutes and you will see the new macOS Catalina 10.15.6 update available for download. Hit the download button. Install macOS 10.15 Catalina After downloading macOS 10.15 Catalina, the installer will begin on its own and launch automatically. Follow the on-screen instructions to complete the upgrade and start using macOS Catalina. When prompted, select the internal hard drive to upgrade the Mac or an external hard drive to create an external macOS drive. We recommend following these steps for those with the following operating systems running on a Mac: macOS 10.13 High Sierra, macOS 10.14 Mojave, and macOS 10.15 Catalia onward. It isn't always possible to download these Xcode Command Line Tools, following these steps, on Mac’s running older operating systems.
macOS Catalina 10.15 is the latest operating system that runs on Apple Mac laptops and desktops. However, it is still in beta test and only available for part of Mac computers with high profile or enrolled in Apple Beta Program. Is there any way to upgrade the macOS to Catalina manually or install Catalina on Mac from scratch? The answer is Yes. But you have to download macOS Cataina DMG or the installer app.
If you are looking for the easiest way to download macOS Catalina DMG on a Macand but don't know how? Well, there are three ways by which you can instantly get the latest macOS installer without a hassle.
Part 1. Get MacOS Catalina DMG Via Direct Download Link
Many people prefer the direct download link of macOS Catalina as it is more flexible. You can unpack the DMG file and make a bootable Catalina installer USB, which can be used to install macOS on other computers. However, it is not easy to find the direct download link because Apple wants you to upgrade from Mac App Store. Fortunately, there are a few good websites that host the direct download link of macOS Catalina DMG. After that, you can burn the macOS dmg to USB to make it bootable for installation.
macOS Catalina 10.15 DMG Download Link 1: https://themacgo.com/macdownload/ (Wait a few seconds and the download starts automatically.)
macOS Catalina 10.15 DMG Download Link 2: https://drive.google.com/drive/folders/1ELQXMuuVWddamLPG0RHjyvaNW4r628CM (Password: Geekrar.com)
macOS Catalina 10.15 DMG Download Link 3: http://www.mediafire.com/file/wazr84baudhi27h/macOS_Catalina_DMG_by_Geekrar.rar/file
macOS Catalina 10.15 DMG Download Link 4: https://sundryfiles.com/G54 (Premium account required for download!)
macOS Catalina 10.15 InstallESDDmg PKG Download Link : http://swcdn.apple.com/content/downloads/61/56/041-83630-A_8RCIBB415Y/7jqh3nh97ood2mjej7hdgpx7fgh5c3fi9g/InstallESDDmg.pkg
macOS Catalina 10.15 VMware Image Download Link: https://www.mediafire.com/file/yrd1py7od5911zt/Catalina_Virtual_Disk_Image_by_Techsviewer.rar/file
macOS Catalina 10.15 VirtualBox Image Download Link: https://www.mediafire.com/file/yrd1py7od5911zt/Catalina_Virtual_Disk_Image_by_Techsviewer.rar/file
Tips: After downloading macOS Catalina .dmg file, it is time to make a macOS bootable USB from it. For this purpose, you can give a try on UUByte DMG Editor, one of the most popular software to create a Catalina USB installer on both Windows PC and Mac.
Part 2. Download macOS Catalina From Mac App Store
Apple always recommends its users downloading macOS install file from Mac App Store for security reasons. It is safe and easy. But the actual downloaded file is not an dmg file. Instead, it is an app called Install macOS Catalina, which is used to make the upgrade from current macOS to Catalina. For a clean install, it is better to download the dmg file and make an installer USB.
Note: Make sure to back up your Mac prior to installing macOS Catalina.
Step 1: Go to Mac App Store and search macOS Catalina. Then hit on 'Get' to download page.
Step 2: Doing this will open System Preferences followed by the section of Software Update, where you will find MacOS Catalina ready to download. Hit the option saying 'Upgrade Now' and download MacOS Catalina on your Mac.
Step 3: Next, macOS Catalina upgrade will ask for system reboot. Complete the process and install macOS Catalina on that computer.
Downloading macOS Catalina Install app works fine on my of newly devices but it could be problems for old Macs even it is officially supported by Catalina. If this is the case, then you have to patch the OS and install Catalina again. However, you need find a third-party app to do the dirty work. We will talk about this in Part 3.
Part 3. Download macOS Catalina 10.15 Installer with macOS Catalina Patcher
Although it may appear easy to try out the conventional approach of downloading macOS update in Software Update, there are a few known issues on old Macs shipped in 2013 or earlier, meaning the download progress can not be completed successfully. That's why macOS Catalina Patcher tool comes into help. This patching tool makes the job even simpler for installing macOS Catalina on unsupported Mac models.
However, the file size of these updates differs depending on the Mac device you are using. That means the downloaded update might not necessarily be the full installer version. For instance, if you wish to keep the installer file as archive for further application, or use it to generate bootable flash drive, this file size won't be sufficient.
Fortunately, with macOS Catalina Patcher tool, you can simply download the entire update of macOS setup from Apple's servers. Let's check out the stepwise instructions of how to use this software tool to download the macOS Catalina DMG.
Step 1: Download a copy of macOS Catalina Patcher from this link.
Step 2: After downloading and attempting to install, an error notification will be prompted. It is due to the unavailability of developer verification credential for macOS. Now, go to System Preferences -> Security & Privacy. Then find the button saying 'Open Anyway' to let the app run.
Step 3: Open macOS Catalina Patcher app and from the main menu, navigate to Options to uncheck the box saying 'Auto-apply Post Install Patches'. As you are done with the previous step and move to the screen as in the link below, hit Download a Copy.
Step 4: The following screen will notify the file size of macOS Catalina you are to download. The resolution is around 7GB and after the download, it will automatically get stored in the Downloads folder. Then hit Continue to initiate the process of download.
Step 5: The download time of the file will depend upon the internet connection and its speed. So, you might have to wait for some while for the process to complete. Eventually, the entire macOS Catalina setup file will be available on your device.
Closing Words
Well, that is all for the day. Hopefully, the above methods were helpful in guiding you on how to download macOS Catalina for both supported and unsupported Macs. When the download is finished, the next step is to burn the DMG file to USB. Then boot macOS from USB and starts the installation wizard.
- Java Development Kit (JDK)
- Apache Derby
Introduction
This tutorialrequires the Java Development Kit (JDK)and the Apache Derby software.
First, this section describes which JDK release is required, asks you to install it if you haven't already,then shows you how to configure and verify your installation.
Next, it shows you how to install the Apache Derby software,configure your environment to use the Derby Embedded JDBC driver,and verify your installation with the Derby sysinfo tool.
Java Development Kit (JDK)
Derby requires Java 2 Standard Edition (J2SE) 9 or higher.Only the Java Runtime Environment (JRE) is required to run Derby,but this tutorial compiles a Java application, so it requiresthe Java Development Kit (JDK).
If you already have a JDK installed, verify you are configured to use it,then proceedto the Apache Derby installation section.
Install JDK
If you have not already installed a JDK,download and install it now. No specific vendor implementation is required;the only requirement is that it be certified for J2SE 9 or higher.Java's reference implementation is athttp://www.oracle.com/technetwork/java/javase/downloads/index.html.After installing the JDK of your choice, proceed to the next section.
Configure JDK
Set the JAVA_HOME environment variable to the root location ofthe JDK installation directory.The examples below useC:jdk1.9 for Windows and /opt/jdk1.9 for UNIX, but be sure to use the actuallocation on your system. (e.g. The default installation location used by the JDK installer might be something like C:Program FilesJavajdk1.9.0_11-b21)
Windows:C:> set JAVA_HOME=C:jdk1.9
UNIX Korn Shell:$ export JAVA_HOME=/opt/jdk1.9
Next set the PATH environment variable to include the JDKbin directory.The PATH variable tells the operating system where to find thejava interpreter and the javac compiler.
Windows:C:> set PATH=%PATH%;%JAVA_HOME%bin
In Windows, these environment variables can also be set from - right click 'My Computer' -> Advanced -> Environment Variables.
UNIX Korn Shell:$ export PATH=$JAVA_HOME/bin:$PATH
Verify JDK
Use the java -version command, as shown below,to verify the installed release:
java -versionjava version '9'Java(TM) SE Runtime Environment (build 9+181)Java HotSpot(TM) 64-Bit Server VM (build 9+181, mixed mode)
The output you see may be different from what is shown above becausethe java -version command outputs vendor-specific information;however, if you don't see what looks like valid version information, then STOP!And don't proceed until you resolve that problem.
Apache Derby
Download Derby
Download the binary Apache Derby distribution from the Derby web site at http://db.apache.org/derby/derby_downloads.html.These tutorial instructions use version 10.15.2.0 and assume you downloaded one of the binary distribution files listed in the table below:
| Operating System | Download File |
|---|---|
| Windows | db-derby-10.15.2.0-bin.zip |
| UNIX, Linux, and Mac | db-derby-10.15.2.0-bin.tar.gz |
If a more recent release is available, download that, then substitute that version number for 10.15.2.0 in the following instructions.
Install Derby
Choose the directory into which you want to install the Derby software. You must have write permissions to this directory. The sample instructions below use C:Apache for Windows and /opt/Apache for UNIX; be sure to use your actual location. Copy the software distribution to the location you choose, then extract it as shown below.
Windows (use your extraction tool e.g. WinZip -- these instructions use mks unzip):mkdir C:Apachecopy db-derby-10.15.2.0-bin.zip C:Apachecd C:Apacheunzip db-derby-10.15.2.0-bin.zip
UNIX:mkdir /opt/Apachecp db-derby-10.15.2.0-bin.tar.gz /opt/Apachecd /opt/Apachetar xzvf db-derby-10.15.2.0-bin.tar.gz
In both cases, the software will now be extracted into a subdirectory named db-derby-10.15.2.0-bin.
Set DERBY_INSTALL
Set the DERBY_INSTALL variable to the location where youinstalled Derby.Examples are shown below, but be sure to use the actual location on your system:
Windows:C:> set DERBY_INSTALL=C:Apachedb-derby-10.15.2.0-bin
UNIX Korn Shell:$ export DERBY_INSTALL=/opt/Apache/db-derby-10.15.2.0-bin
Configure Embedded Derby
To use Derby in its embedded mode set your CLASSPATH to include the jar files listed below:
- derby.jar: contains the Derby engine and the Derby Embedded JDBC driver
- derbytools.jar: optional, provides the ij tool that is used by a couple of sections in this tutorial
You can set your CLASSPATH explicitly with the command shown below:
Windows:C:> set CLASSPATH=%DERBY_INSTALL%libderby.jar;%DERBY_INSTALL%libderbytools.jar;%DERBY_INSTALL%libderbyoptionaltools.jar;%DERBY_INSTALL%libderbyshared.jar;.
UNIX:$ export CLASSPATH=$DERBY_INSTALL/lib/derby.jar:$DERBY_INSTALL/lib/derbytools.jar:$DERBY_INSTALL/lib/derbyoptionaltools.jar:$DERBY_INSTALL/lib/derbyshared.jar:.
Notice that multiple entries in the class path are separated by asemicolon (;) on Windows and a colon (:) on UNIX.
The Derby software provides another way to set CLASSPATH, using shell scripts (UNIX) and batch files (Windows). This tutorial shows how to set CLASSPATH explicitly and also how to use the Derby scripts to set it.
Change directory now into the DERBY_INSTALL/bin directory. The setEmbeddedCP.bat (Windows) and setEmbeddedCP (UNIX) scripts use the DERBY_INSTALL variable to set the CLASSPATH for Derby embedded usage. You can edit the script itself to set DERBY_INSTALL, or you can let the script get DERBY_INSTALL from your environment. Since you already set DERBY_INSTALL in the 'Set DERBY_INSTALL' section above, you don't need to edit the script, so go ahead and execute it as shown below:
Windows:C:> cd %DERBY_INSTALL%binC:Apachedb-derby-10.15.2.0-binbin> setEmbeddedCP.bat
UNIX:$ cd $DERBY_INSTALL/bin$ . setEmbeddedCP
Verify Derby
Run the sysinfo command, as shown below, to output Derbysystem information:
java org.apache.derby.tools.sysinfo
Successful output will look something like this:
------------------ Java Information ------------------Java Version: 9Java Vendor: Oracle CorporationJava home: /Library/Java/JavaVirtualMachines/jdk-9.jdk/Contents/HomeJava classpath: /Users/rhillegas/sw/zzz/db-derby-10.15.2.0-bin/lib/derbyshared.jar:/Users/rhillegas/sw/zzz/db-derby-10.15.2.0-bin/lib/derby.jar:/Users/rhillegas/sw/zzz/db-derby-10.15.2.0-bin/lib/derbynet.jar:/Users/rhillegas/sw/zzz/db-derby-10.15.2.0-bin/lib/derbytools.jar:/Users/rhillegas/sw/zzz/db-derby-10.15.2.0-bin/lib/derbyoptionaltools.jar:/Users/rhillegas/sw/zzz/db-derby-10.15.2.0-bin/lib/derbyclient.jarOS name: Mac OS XOS architecture: x86_64OS version: 10.11.6Java user name: rh161140Java user home: /Users/rh161140Java user dir: /Users/rhillegas/sw/zzz/db-derby-10.15.2.0-binjava.specification.name: Java Platform API Specificationjava.specification.version: 9java.runtime.version: 9+181--------- Derby Information --------[/Users/rhillegas/sw/zzz/db-derby-10.15.2.0-bin/lib/derby.jar] 10.15.2.0 - (1853019)[/Users/rhillegas/sw/zzz/db-derby-10.15.2.0-bin/lib/derbytools.jar] 10.15.2.0 - (1853019)[/Users/rhillegas/sw/zzz/db-derby-10.15.2.0-bin/lib/derbynet.jar] 10.15.2.0 - (1853019)[/Users/rhillegas/sw/zzz/db-derby-10.15.2.0-bin/lib/derbyclient.jar] 10.15.2.0 - (1853019)[/Users/rhillegas/sw/zzz/db-derby-10.15.2.0-bin/lib/derbyshared.jar] 10.15.2.0 - (1853019)[/Users/rhillegas/sw/zzz/db-derby-10.15.2.0-bin/lib/derbyoptionaltools.jar] 10.15.2.0 - (1853019)----------------------------------------------------------------------- Locale Information -----------------Current Locale : [English/United States [en_US]]Found support for locale: [cs] version: 10.15.2.0 - (1853019)Found support for locale: [de_DE] version: 10.15.2.0 - (1853019)Found support for locale: [es] version: 10.15.2.0 - (1853019)Found support for locale: [fr] version: 10.15.2.0 - (1853019)Found support for locale: [hu] version: 10.15.2.0 - (1853019)Found support for locale: [it] version: 10.15.2.0 - (1853019)Found support for locale: [ja_JP] version: 10.15.2.0 - (1853019)Found support for locale: [ko_KR] version: 10.15.2.0 - (1853019)Found support for locale: [pl] version: 10.15.2.0 - (1853019)Found support for locale: [pt_BR] version: 10.15.2.0 - (1853019)Found support for locale: [ru] version: 10.15.2.0 - (1853019)Found support for locale: [zh_CN] version: 10.15.2.0 - (1853019)Found support for locale: [zh_TW] version: 10.15.2.0 - (1853019)------------------------------------------------------
The output on your system will probably be somewhat different from the output shown above, but it should reflect the correct location of jar files on your machine and there shouldn't be any errors. If you see an error like the one below, it means your class path is not correctly set:
$ java org.apache.derby.tools.sysinfoException in thread 'main' java.lang.NoClassDefFoundError: org/apache/derby/tools/sysinfo
Echo your CLASSPATH, as shown below,then double check each entry in your class path to verify that the jar file is where you expect it:
Windows:C:> echo %CLASSPATH% C:ApacheDB-DER~1.1-Blibderby.jar;C:ApacheDB-DER~1.1-Blibderbytools.jar;C:ApacheDB-DER~1.1-Blibderbyoptionaltools.jar;C:ApacheDB-DER~1.1-Blibderbyshared.jar;
UNIX:$ echo $CLASSPATH/opt/Apache/db-derby-10.15.2.0-bin/lib/derby.jar:/opt/Apache/db-derby-10.15.2.0-bin/lib/derbytools.jar:/opt/Apache/db-derby-10.15.2.0-bin/lib/derbyoptionaltools.jar:/opt/Apache/db-derby-10.15.2.0-bin/lib/derbyshared.jar:
Install Pivot Pin S&w M&p 10-15
If sysinfo outputs valid information, you'reready to move to 'Step 2: ij Basics'.