Make A Bootable Catalina USB Installer - Boot from USB Flash Drive and Install Mac OS X
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- Опубликовано: 15 июл 2024
- This video shows you how to create a bootable USB Flash Drive Mac OS X Installer. You will be able to boot most Macs from it and then install Mac OS X 10.15 Catalina without needing to re-download the installer for each Mac. You can also use it to format the internal drive of a Mac using the built in Disk Utility, this is also covered in the video.
You will need a 16GB or larger USB Flash Drive, but 32GB is best (aka USB key). Make sure it's empty, because you'll be deleting everything on it during the process of making the installer.
You will use a command in the Terminal. It is best to copy and paste it from here, just make sure you name your USB Flash Drive “MacInstall” (without the quotes). If you type it, make sure you type it correctly, or you will get an "unknown command" error. Here is the command for your reference:
sudo /Applications/Install\ macOS\ Catalina.app/Contents/Resources/createinstallmedia --volume /Volumes/MacInstaller/ --nointeraction &&say Done
URL to find Catalina if it is not the current Mac OS and is not in the Mac Store
support.apple.com/en-us/HT201475
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Thank you so much - I was starting to lose hope after reading countless other websites, all with inaccurate information. I followed your instructions and it worked perfectly - thank you, really grateful!
Thanks, very well teaching.
Excellent! That worked a treat. Thanks very much.
You’re a true MVP. Thank you so much!
Very detailed. Thanks a bunch, Can you put out a video on Mac OS Big Sur too
Very helpful, Thankyou
thanks buddy 🔥
Thank you!
Excellernt!
Nice & easy. Thank you.
Glad it was helpful!
Thank you
how do you create that bootable usb drive when using Ubuntu as already installed OS on a macbook pro. and is it possible to have a dual installation for both Ubuntu and MacOS catalina installed on the same machine?
thanks for that video, i like the pace of explanation
There is a small mistake. The Flash drive is called MacInstaller and the terminal script refers to MacInstaller but the written instruction suggests you name the flash drive MacInstall.
Thank you so much, sorry I’m just commenting here, need help! I use MacBook Pro mid 2009 5.5 and I just passed the terminal, I restarted my system as usual holding the option key, to install from my flash drive, and each time I tick on my Install Mac OS Catalina to boot, it always show me a grey 🚫 icon, which I have no idea why it gets stuck there always. Tried Dos1 method and still the same grey 🚫 result.
Anyone get the installer files lately? The App Store etc only INSTALLS it, it won't give the option to download only.
Hi, thanks for the tutorial but mine doesnt work. I keep getting this message after I type my password.
/Applications/Install macOS catalina .app does not appear to be a valid OS installer application.
Any ideas how to resolve this. Thanks
When you use terminal and typed in that comand then it asked for a password. What would you do if you don't have a password? Cause I'm planning on replacing my hard drive in my iMac. So the HDD will be reformated and empty.
What would I type in that password spot?
Thanks.
When d
when do you remove usb drive
My MacBook Air mid2012 failed
Hi, my problem is I downloaded it on my imac but it only downloads 22MG rather than almost 5GB. What should I do?
i have same problem too mine is just 19mb
After I type the command It doesn’t Let me type my password im stuck help ?
I have followed up every step but when I launch the command for my key, it tells me command not found
If I am currently running Linux on my computer and I wanted to download Catalina for my 2012 MacBook that don’t have a operation system how is this done ?
following mine is on windows
Need help, when I type in the sudo command I get a “command not found” message
When I type in terminal “man sudo” I get this msg “cannot open configuration file /private/etc/man.conf... no manual entry for sudo
That happened to me as well. I noticed that I did not have the install macois file in the applications folder. So make sure it is in the applications folder or the terminal will not be able to find the media.
hey I followed your steps still after entering my password is still saying "command not found
please what do I do?
When there is a "Command not found" error, it's usually a typo in the command. Check what you're typing carefully. It's case sensitive and even the spaces have to be exact.
10:10 Actually, it's 8.14GB file (instead of 5GB).
Please kill the music ... it’s really hard on older “Senior” ears trying to sort your voice when the music increases volume ... thanks
0:58 you mean 32Gb, not 32Mb