How to dual boot Mac: Run two versions of macOS Catalina & macOS Mojave on a Mac | Easy Steps 2020

How to dual-boot Mac: Run two versions of macOS on a Mac.
In this video, you will see:
1. How to Dual Boot Mac OS without Downgrading MacOS Catalina with Mojave.
2. How to create a second Mac volume.
3. How to run 32-bit apps on Mac. (solution for MacOS Catalina users).
4. How to fix macOS older apps not running.
5. How to switch between os on macos catalina.
6. How to Download, Install & Set Up macOS Mojave.
7. How to create a bootable macOS Mojave USB Install drive.
8. Run 32-bit apps without parallel desktop software or virtual machine.
9. Can I Run Two OS on My Mac.
10. Can you install older MacOS.
11. is macOS Mojave still Available for macOS Catalina.
12. Prepare MacOS Mojave Bootable Drive on macOS Catalina.
14. install macOS on a separate APFS Volume.
15. Downgrade macOS Catalina Bata to MacOS Mojave.
16. dual boot high sierra Mojave.
17. How to Switch Between OS on macOS Catalina.
Download macOS Mojave File on App Store
apps.apple.com....
MacOS High Sierra on App Store
apps.apple.com....
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[@jamesmartin3826]

Thank you for such a well made tutorial, excellent work.

[@TechDeskVlogs]

Thanks for watching! Consider to show your support by subscribe, like & share with your friends and for watching more coming videos on my channel!!! Thx.

[@appleseal6248]

Didn't watch the whole video but you put a smile in my face with how your video plays ethereal music then you jump in the middle of it with your instruction then back to the music. I like your sense of humor. Will be back to finish the video later.

[@miconico9798]

This was so helpful! I’m surprised it hasn’t been getting the attention it deserves!

[@TechDeskVlogs]

Thanks for Watching! Consider to show your support to complete 200 subs by Subscribe, Like & Share!!! 10X

[@paultutt294]

This was really helpful, I followed all the steps but for some reason the startup disc is not giving me an option to select anything other than the primary Catalina OS (No other options available). When I press "option" on restart, it just goes straight into Catalina. Any suggestions?

[@boilington]

Hello, i have the same problem Did you find a fix?

[@ericaknipp3006]

When you installed Catalina your system it automatically reformatted your entire internal hard drive to APFS. Note: If you purchased a product with Catalina already installed on your computer it will have already been formatted with APFS; but don’t be concerned, you will still be able to reformat the partition that you intend to run Mojave on as macOS extended journaled. Hence, you will need to Reformat the partition that you initially attempted to install Mojave on from APFS to “macOS extended journaled”. Once you have reformatted the partition that you originally attempted to.installed Mojave on, it will be erased. Therefore, you will need to restart the entire procedure that video provide you. Memo: assuming that you initially installed Mojave on the partition formatted with APFS, it will seem as though Mojave is installed. However, it will not operate correctly as a 32-bit system with most third-party apps because the partition was formatted in APFS. Memo: Mojave was not designed to be installed on a PFS format. Hence, you will need to

[@boomchaka7762]

How does one undo a dual boot setup? I was on El Capitan and setup up a dual boot with Catalina. I want to merge/consolidate everything to Catalina. I realize not all the apps from el cap will function. Mostly just want my data files. Thanks!

[@tataygamesPH]

Hi I have a mac mini, mojave, and I want to create a partition for big sur is it possible? hope u can reply thanks

[@K71090]

Can I do this with an optical drive replaced with an SSD? While still keeping high Sierra on my main SSD?

[@Mirra_Travel]

i just follow your steps this is was AMAZING!!! i cant thank you enough for this video!! thank you su MUCH

[@TechDeskVlogs]

Thanks for watching! If you liked the video consider to show your support by subscribe, like & share with your friends and for watching more videos on my channel and for coming soon more videos!!! 10x

[@yurionyl5991]

I followed every step in this video and it worked!

[@TechDeskVlogs]

Thanks for watching! If you liked the video then consider to show your support by subscribe, like & share the video with your friends and for watching more videos on my channel!!! Thx.

[@FumFel20]

question, what if i will pick encrypted partition for new installation? It will encrypt also old installation?

[@Anamnesia]

Installing MacOS *_MOJAVE_* on *APFS* causes an error message to appear saying; _The Current Disk Filing System has features not compatible with this Operating System (MOJAVE)_ How do you get around this??? I've been attempting to Format my SSD & create two partitions; 1x HFS+ and 1x APFS. However APFS *_wants_* to be the Dominant File System. If I format the drive as HFS+ and then create an APFS Partition, the APFS partition is created, but also the original HFS+ drive/partition is ALSO converted to *_APFS_* I require one HFS+ partition (for Mojave) and the other partition as APFS (for Monterey), but I'm yet to discover a way to retain the HFS+ partition along side an APFS partition... 😕🤔

[@tomstopper5281]

when I reboot and chose to install the OS Catalina the screen goes black and there is a block symbol on the screen…. I am not have any luck…

[@jordangreenberg5060]

I am having problems because I can't seem to get Catalina on my usb drive. I am typing in the right commands in my terminal, but it's not working. It says it is not not a valid mount point. And I transferred the Catalina installer to my flash drive. And I also created a new volume for my Catalina installation. But it keeps saying it is not a valid mount point. And I am not sure on what to enter in the terminal after the createinstallmedia --volume. Mine looks like this: --volume /Volumes/MyVolume. But I don't know on what to put where it says Volume and MyVolume. Okay so I need help here. Also, do I need to put a single dash after create install media command? And the name of my flash drive is called just Catalina. Okay, so I need help with this. Because it's not working for me. Okay so thanks a lot.

[@buddhiaudioparadise6925]

Your content is very helpful!! Thank you..Worked really well..

[@nunomoreira2142]

Hi, great video but does not work with new Macs already shipped with Catalina. My Mac is from 2020 and have Catalina installed and I’m struggling to install Mojave. Any idea how to do it?

[@frogsarecute]

I've install two mac os, why on finder another mac not shown, when i click is 0 items and another mac not shown on startup disk in preferences

[@DH-CA]

question: Can I access to all my files from booting to both macOS or only from one ? I've done the dual boots but the second OS do not have access to the files...

[@d.felipeh]

when I restart whit alt key It's just Internal disk, not the pendrive :(((( helppp

[@GDName]

Hi. Can you please help me with this: all of my disks are locked. And I can't install the newly created drive to install high sierra on the second volume. How do I target and unlock the correct drive or to unlock all of them? My main working drive is Catalina and I don't want to touch that.

[@d3mist0clesgee12]

thanks for the tutorial, great stuff

[@BobBob-cu2zh]

I had a 2012 mack book with CD DRIVE I LOADED A WINDOWS 98 CD IN IT AND AFTER A WILE OF MESING WITH IT I ENDED UP WITH WINDOWS 98 ON A 2012 MACKBOOK

[@tokkie398]

i want to run 32 bit progammas i it okay if i put is to mojowave apfs

[@lizard_hobo2886]

Great tutorial! Keep it up. Works perfectly for me

[@TechDeskVlogs]

Thanks for watching! If you liked the video consider to show your support by subscribe, like & share with your friends and for watching more videos on my channel and for coming soon more videos!!! 10x

[@bobbybrown8417]

Thank you for this very helpful video. One question, now on my desktop in Catalina I see the main hard drive and also one called "Mojave Partition?" ?? Any idea if that is an error?

[@poker.4203]

do i need a physical usb for this?and does this format my drive?

[@muhammadfihan601]

How to delete it ? When i delete that partition, it's still not a normal booting like before dual boot

[@NashGnomers]

When I try to do step 3, after doing the --volume, adding the bootable drive to terminal, press enter. I enter my password and then I do not have the prompt where you press "y" for yes... instead I get this message: Arguments--volume, A path to a volume that can be unmounted and erased to create the install media. --applicationpath, A path to copy of the OS installer application to create the bootable media from. --nointeraction, Erase the disk pointed to by volume without prompting for confirmation. Example: createinstallmedia --volume /Volumes/Untitled --applicationpath "/Applications/Install OS X El Capitan.app" Nash@macusers-MacBook-Pro-99 ~ % and I'm not sure what to do? I did all the prior steps according to the video.

[@xenon42069]

Me after watching this : Cool ! Ill try this now ! My MacBook ram : *ADIOS*

[@adriandarkssj4]

what's wrong with the ram?

[@dobrekzz]

Thx❤

[@Dj_Febian]

Great work. Easy well understood tutorials

[@TechDeskVlogs]

Thanks for watching!

[@megajop2000]

Yo it works perfectly and I am zen as fuck

[@mirf6283]

Thanks! I could install old Mac OS

[@leonelcarita]

Is not working for me, I do everything but when I type my password, it doesn't do anything else.

[@arnielaguitao1470]

Hi, can't continue with the password,, i am putting my password for my laptop but it doesn't go thru,

[@EverySingleDayHawaii]

I had the same problem. It turns out I was logged into two Mac computers, one to watch this video and one to install Mojave. When I logged out of the video Mac, I was able to continue with my password.

[@rodrigosaravia9677]

Hi! when i try to download mojave from the app store it says there is no update available!

[@TechDeskVlogs]

Thanks for watching! try one of these links to download : The Apple support links are as follows: support.apple.com/en-us/HT211683 support.apple.com/en-us/HT201372

[@SuSoSy]

hi, after entering password I see it: Usage: createinstallmedia --volume

[@ronfischer1143]

well, its not working for me tho its good explained but it does not cover problems which most of us will face that means ur video is not helpful

[@fabiodelimamor]

Muito Bom!

[@ashprolegend_1237]

It’s tells me to connect my keyboard and mouse and doesn’t work

[@tomron5568]

Had same problem after start instalation new os

[@jordangreenberg5060]

Can somebody please help me? I an answer from someone. Okay thanks.

[@EverySingleDayHawaii]

If you have a new Mac (2020) with the security chip, you’ll need to first allow your device to boot from an external hard drive. This is a good video, but it is already obsolete.

[@adriandarkssj4]

how can i do that?