Mac OS X Server 10.2 – code name Jaguar. Mac OS X Server 10.3 – code name Panther. Mac OS X Server 10.4 – code name Tiger. Mac OS X Server 10.5 – also marketed as Leopard Server. Mac OS X Server 10.6 – also marketed as Snow Leopard Server. Starting with Lion, there is no separate Mac OS X Server operating system. Dual Booting with Mac OS (yes, you can keep MacOS!) I am writing this assuming that you want to keep Mac OS X on your hard drive and that you wish to dual-boot it at any time. You should have plenty of free space on your disk drive (the more the better), so either delete some cruft or move some of your old data onto a separate external archive. 01 – Grub2Win Free. Grub2Win supports 64 and 32 bit EFI and BIOS on Windows 10, 8, 7 and XP.

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• To Duel List Mac Os Catalina

If you’re excited at the launch of macOS Catalina and want to try out all the new features for yourself, you can download the public beta from July and give it a go. However, as it’s beta software, it comes with a health warning and you should take precautions when testing it. One way you can do that is to create a dual boot system so you can still boot into Mojave, or whatever macOS you’re currently running, when you need to. Here’s how to dual boot macOS Mojave and macOS Catalina.

Clean up your drive beforehand

Once installed, macOS Catalina will have access to all your files and folders, so back up your Mac just in case it damages them. You can use Time Machine or any other backup tool. Just make sure you have a backup of your entire Mac before you download macOS Catalina. You should also consider turning on FileVault. It will slow your Mac down, but will force Catalina to ask for permission before it access encrypted files and folders.

The other thing you should do is clear out the junk on your Mac. We’re going to install Catalina on your main startup disk (yes, you don’t need an external disk!), so the more space you have available, the better. It’s not often that I recommend specific applications, but for this purpose, I’m a big fan of CleanMyMac X. It makes it really easy to identify what’s taking up all your disk space, thanks to its System Junk tool. And it makes it easy to remove junk files, too. You can either let it scan your whole Mac, or focus on specifics like iTunes, Photos cache files, Launch agents, or large and old files you no longer need to access regularly. You can download it here, so I recommend giving it a try, you might find that it frees up tens of gigabytes of space.

What you’ll need for macOS Catalina

1. Access to macOS Catalina. It’s only available to Apple developers until July. Then there will be a public beta available. In October, the full version will be available on the Mac App Store.
2. A Mac that’s capable of running Catalina. Here’s the list of compatible Macs:

MacBook 2015 and later

MacBook Air 2012 and later

MacBook Pro 2012 and later

IMac 2012 and later

IMac Pro 2017 and later

Mac Pro 2013 and later

3. An APFS-formatted startup disk. If your Mac is running High Sierra or Mojave, its startup disk is probably formatted as APFS. The exception is hard disks or Fusion drives running High Sierra. You can check the format of your startup drive by clicking Launchpad > Disk Utility.

If your start-up disk is not formatted as APFS, your best option is to install Catalina on external drive. In this case, instead of using Disk Utility to create another volume on your startup disk as shown below, you should grab a USB stick or external hard drive with at least 16GB capacity and use Disk Utility to erase it and reformat it. Then, when you install Catalina, below, choose it, rather than the second volume, as the location for the install.

Download and install macOS Catalina

Depending on when you read this, macOS Catalina will either be in developer beta, public beta, or full release. If it’s still in developer beta, you’ll need to wait until the full public beta is available in July, unless you’re a registered Apple developer.

Before you download macOS Catalina, you’ll need to create a volume on which it can be installed. If you’re running Mojave, your startup disk will be formatted as APFS. This makes it easy, because APFS doesn’t require you to create a new partition. It uses containers, each of which can host multiple volumes. Here’s how to create one for Catalina.

1. Go to Applications>Utilities and double-click Disk Utility to launch it.
2. Select your startup volume in the left sidebar.
3. Click on the Edit menu and choose Add APFS Volume.
4. When “Add APFS Volume to container” appears, give your new volume a name, say “Catalina”, and choose APFS as the format.
5. You can ignore the section for reserving space for the new volume, it will be given what it needs as it shares space with your startup volume.

You’re now ready to download and install Catalina.

1. Click here to begin downloading the public beta.
2. When the download starts it will prompt you to choose a location for the installation. Choose the volume you just created.
3. Click process to install macOS Catalina

Your Mac will restart several times during the installation process. Once it’s finished, you will be able to dual boot into wither macOS Catalina or macOS Mojave.

How to dual boot macOS Mojave and macOS Catalina beta

Once you’ve installed macOS Catalina, you have two options for choosing which OS to boot into.

1. Hold down the Option key when you restart or boot your Mac, then choose macOS Catalina or Mojave.
2. Before you shutdown or restart, go to the Apple menu and choose System Preferences. Then choose Startup Disk and select the one you want to boot into next time.

My apps don’t work on macOS Catalina

First thing people notice after they run a new OS is some of their apps stopped working. Annoying as it is, not all developers have yet optimized their software for Catalina. A large portion of your applications may still be 32-bit, which macOS Catalina won’t support.

There’s a quick 5 second way to check which of your apps are 32-bit.

I do it using the Uninstaller tool in CleanMyMac X. You can download its free version here.

1. Launch the program and click the Uninstaller tab
2. Now, select 32-bit in the sidebar

From there you can find your long-forgotten apps, delete them. And, most importantly, update them to the latest versions using the Updater tool (the one below Uninstaller).
Dual-booting macOS Catalina and MacOS Mojave is a great way to try out Apple’s new operating system without having to use it every day. You should never use a beta version of an OS for day to day work, so it avoids that problem too. If your startup disk is formatted as APFS, you can even have both operating systems installed on the same disk. Just remember to backup your Mac before you start, and to use CleanMyMac X to clear out junk files.

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Updated: January 1, 2021 Home » Freeware and Software Reviews

How to dual-boot Linux and Windows on the same hard disk? Typically a computer will have a single operating system installed on them, for those that wants to dual-boot multiple OS such as a combination of Windows and Linux, you will need to make some changes and enable the option to choose which OS to boot from during startup.

Related 2021 Article ➤ 3 Free Boot Camp Alternatives – Run Windows Applications And Games On macOS

You can install 2 operating system provided that you partition your SSD or Hard Disk into 2 drives. When you install a Linux distribution, it typically installs the Grub boot loader. Grub loads instead of the Windows boot loader at boot time if Windows was already installed, allowing you to choose the operating system you want to boot by modifying the Boot Configuration Data.

↓ 01 – Grub2Win Free

Grub2Win supports 64 and 32 bit EFI and BIOS on Windows 10, 8, 7 and XP. Safely dual boot Windows and Linux from GPT or MBR disks. Grub2Win boots native GNU Grub version 2 code. Everything is contained in a single 20 MB directory on your Windows C: drive. On EFI systems a few small modules are installed to your EFI partition.

Using the simple Windows GUI and instructions you can install Grub2Win quickly and safely. Select from many OS choices. Supports Antergos, Android, Ubuntu, Debian, Suse, Fedora, Mint, Clover and Windows. Also boots ISO files. You can enter your own custom commands for each menu entry.

• Supports 64 and 32 bit EFI as well as BIOS firmware.
• Installs to Windows 10, 8, 7 and XP.
• Requires just one directory on the Windows C: drive, about 20 MB disk space.
• Simple Windows GUI easily sets up Grub2Win in seconds.
• Lets you set your EFI firmware boot order from within Windows.
• Preview and customize the 9 included graphic background themes.
• Works with all filesystems including Mac hfs and Btrfs.
• Can search for and boot a partition by it’s label. Supports advanced scripting.
• Works with both GPT and MBR disks – up to 128 primary partitions per drive.
• Supports extremely large (over 40 TB) disks and partitions.
• Safely multiboot Windows, Antergos, Android, Ubuntu, Debian, Suse, Fedora, Mint, Clover and more.
• Grub customization is done from Windows – Configuration in Linux is not required.

↓ 02 – EasyBCD Free Personal

Take control of your boot loader, EasyBCD supercharges your Windows PC, allowing you to dual-boot to your heart’s content. Also boot into legacy systems Microsoft doesn’t support: MS-DOS, Windows 9x, Windows ME, and Windows 2000!

EasyBCD is geared for users of all kinds. Whether you just want to add an entry to your old XP partition or want to create a duplicate for testing purposes; if youre interested in debugging the Windows Kernel or septuple-booting your seven test operating systems, EasyBCD is the key.

• Boot anything – Windows, Linux, macOS, & BSD! Boot both from and into USB drives, ISO images, virtual disks, and more.
• Boot anywhere – Create bootable USB sticks with repair utilities that you can take with you anywhere.
• Protect against disaster – Create entries to boot into recovery utilities or safe mode to prepare for a rainy day.
• Painless editing – Add, rename, remove, configure, and reorder entries at whim.
• Solve difficult problems – Use EasyBCD to troubleshoot Windows, back up and repair the bootloader, and more.
• Powerful scripting with NeoGrub – You’ll have the power to hide partitions, change active flags, and create complex boot scenarios.

↓ 03 – rEFInd Boot Manager Free

rEFInd is a fork of the Small rEFIt boot manager for computers based on the Extensible Firmware Interface (EFI) and Unified EFI (UEFI). Like rEFIt, rEFInd is a boot manager, meaning that it presents a menu of options to the user when the computer first starts up, as shown below. rEFInd is not a boot loader, which is a program that loads an OS kernel and hands off control to it.

↓ 04 – Clover EFI bootloader Free

This is EFI-based bootloader for BIOS-based computers created as a replacement to EDK2/Duet bootloader. Clover is an operating system boot loader for computers already equipped with an UEFI firmware and for those equipped with legacy BIOS firmware. An operating system (OS) may support (U)EFI (macOS, Windows 7, 8, or 10, Linux) or not (Windows XP). Legacy boot is used for the last one, that is, the old BIOS system is used to handle boot sectors.

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• Boot macOS, Windows, and Linux in UEFI or legacy mode on Mac or PC with UEFI or BIOS firmware
• Boot using UEFI firmware directly or CloverEFI UEFI firmware emulation
• Customizable GUI including themes, icons, fonts, background images, animations, and mouse pointers.
• Ability to boot previously selected boot entry after default timeout
• Boot entries menu scrolls if screen resolution is too low for menu
• Create custom boot entries for personalizing boot entries and add support for other operating systems
• Create Clover boot entry in NVRAM with tool from GUI

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