Last week I did the usb bootable creation process with Catalina Patchereverything was okay.When the time arrive for booting with the usb flash the process starts and goes while 30 secondes and a incompatible icon installation appears like a white wheel with a bar on it. Follow these easy steps to clean install macOS Catalina on your Mac. Plug your USB stick or external hard drive into your Mac, if it’s not plugged in already. Restart your Mac while holding down the Option key. When you see the options for booting appear on screen, choose the installer disk you just created. Make sure to create a macOS Catalina USB installer before you update your MacBook and start exploring Catalina features. While you don’t need a bootable installer to install macOS Catalina, it’s a good option for people with a limited or sporadic internet connection, multiple Macs, or who want a backup installer for emergencies. If you only see a single drive, you may need to click the Show All Disks text. Once the disks are displayed, select the drive you wish to install macOS Catalina on, then click the Install button. Installation of macOS Catalina will begin, with the needed files copied to the selected startup drive. This can take a few minutes. Unibeast is a tool for Hackintoshes to create Bootable USB for macOS operating system from an install of macOS X Lion App, Install macOS Mountain, Install macOS Sierra, Install macOS High Sierra, Install macOS Mojave, Install macOS Catalina. This is an all-in-one Bootable USB drive also used as a rescue boot drive for system recovery.

Create a diskimage (iso) on the Win 10 machine with IMGBURN:
http://www.imgburn.com/index.php?act=download

Check if that model has support for Internet Recovery. If you boot holding Command-R and you have a WiFi connection, it can actually boot into recovery mode without a recovery partition on a drive -- or even without a working drive.

Failing that, use TransMac, which has a 15-day trial period and works flawlessly.

1. Make sure the USB drive is formatted using GPT. 'diskpart' on windows can do this. From an administrator rights (elevated) command prompt run:
   (Find the disk number)
   
2. In the left pane, right click the USB Drive and select Format Disk for Mac
3. In the left pane, right click the USB Drive and select Restore with Disk Image
4. Point to your .dmg (or choose All Files to select an .iso) file and click Open.

It will take a few minutes depending on size of .dmg and speed of USB drive, but once done you can pop it into your mac, hold down the option key when turning on the mac and choose the USB drive. Edited Dec 31, 2020 at 08:43 UTC

How To Install Catalina From Usb

After months of beta testing, Apple has rolled out macOS 10.15 Catalina to public users. You can download and install macOS Catalina if you have a compatible Mac. The macOS Catalina brings tons of new features such as the Apple Arcade, Screen Time, Voice Control, Sidecar, and Find My app. It has also replaced iTunes with three independent apps – Apple Music, Apple Podcasts, and Apple TV.

Is your Mac compatible with macOS Catalina?

Here’s the list of Mac devices compatible with the new software update:

• MacBook (Early 2015 or later)
• MacBook Air (Mid 2012 or later)
• MacBook Pro (Mid 2012 or later)
• Mac mini (Late 2012 or later)
• iMac (Late 2012 or later)
• iMac Pro (2017)
• Mac Pro (Late 2013 or later)

How to clean install the new software update

Upgrading to macOS 10.15 Catalina is pretty simple. Tap on the Apple icon in the top-left corner of the screen, then go to System Preferences > Software Update to download it. Alternatively, you can download it directly from the Mac App Store.

But sometimes upgrading macOS from the previous version to the latest one is not the best way. You might want to clean install macOS Catalina to give your Mac a fresh start without any issues from the previous installation. Here’s how to clean install macOS Catalina from USB drive:

Steps to install

Install Catalina Os From Usb

• Take a full backup of all your important data. Save it to the cloud or an external drive
• You have to create a bootable USB drive. Here’s how you can create it. Make sure the USB drive is at least 8GB in size, and nothing else is stored on it
• Download the macOS Catalina installation file using this link
• Turn off the Mac and then insert the bootable USB drive
• Now turn the Mac back on while holding the Option key
• It will take you to the boot menu where you can select the USB drive. If your Mac has the T2 security chip, you have to first enable booting via external drives from macOS Recovery
• After a while, you’ll see the macOS Utilities menu on the screen. Select Disk Utility and then Continue
• Check to make sure you’ve selected the main drive of your Mac. Also ensure that the format is set as APFS or Mac OS Extended
• Now click Erase to wipe out the drive
• Once the drive has been erased, select Install macOS and then Continue. Just follow the on-screen prompts to clean install macOS Catalina

Once you’ve successfully installed the new software, you can transfer all your data back from the cloud or external storage drive to the Mac. Also, head over to the Mac App Store and re-install all the apps you want.