Dual Boot Your Mac

This video helps you to #dualbootyourmac .
In this video I will show you how to dual boot you Mac.
This way you can avoid potential problems when updating your MacOS
you can run and older OS to keep that older software running avoiding monthly subscription for new
and you can still run newer software that needs a newer MacOS without running into problems.
Get your software running again
Run Multiple MacOS versions
Test before you commit in upgrading
Run Windows on your Mac
and Many other things
This is my fourth youtube video so please bare with me as I am still learning.
I intend to bring a video out at least once a week so I'm sure I will improve with more practice.
I am an apple authorised engineer with over 30 years or experience that I would like to share with you.
if you have any suggestions or recommendations I would be happy to hear your feedback, also if there is anything you would like to hear in my next video please leave a comment below.
** To Skip the chat and jump straight to the info click link below **
0:00 Start
0:01 About
0:19 Intro
0:34 Information
1:34 Disadvantages
3:14 Check List
4:52 Partitioning Using APFS
8:38 Partitioning Using HFS+
15:47 Question
16:31 Outro
Get macOS Catalina (App Store Link)
Get macOS Mojave (App Store Link)
Get macOS High Sierra (App Store Link)
Get macOS Sierra (App Store Link)
Download macOS Sierra (Direct Download Link)
Get OS X El Capitan (App Store Link)
Download OS X El Capitan (Direct Download Link)
Download OS X Yosemite (Direct Download Link)
please see my video on how to create an installer USB Key
• How to Downgrade your ...
Terminal Commands
for Catalina
sudo /Applications/Install\ macOS\ Catalina.app/Contents/Resources/createinstallmedia --volume /Volumes/YOUR HARD DRIVE NAME GOES HERE
for Mojave
sudo /Applications/Install\ macOS\ Mojave.app/Contents/Resources/createinstallmedia --volume /Volumes/YOUR HARD DRIVE NAME GOES HERE
for High Sierra
sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/YOUR HARD DRIVE NAME GOES HERE
for Sierra
sudo /Applications/Install\ macOS\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/YOUR HARD DRIVE NAME GOES HERE --applicationpath /Applications/Install\ macOS\ Sierra.app
for El Capitan
sudo /Applications/Install\ OS\ X\ El\ Capitan.app/Contents/Resources/createinstallmedia --volume /Volumes/YOUR HARD DRIVE NAME GOES HERE --applicationpath /Applications/Install\ OS\ X\ El\ Capitan.app
for Yosemite
sudo /Applications/Install\ OS\ X\ Yosemite.app/Contents/Resources/createinstallmedia --volume /Volumes/YOUR HARD DRIVE NAME GOES HERE --applicationpath /Applications/Install\ OS\ X\ Yosemite.app
** Download Links **
you can download Carbon Copy Cloner.
www.bombich.com/
you can download SuperDuper from HERE.
superduper.en.softonic.com/mac
** Hard Drives Recommended for Backup **
My Recommended 1TB Portable Drive for Backup
amzn.to/3gKCFOD
And if you prefer something SUPER small that blistering fast
amzn.to/2W7L1YM
comment said in this video are of my own professional opinion from experience over the years.
website: www.ifixapple.co.uk
facebook: @ifixapplecouk
twitter: @ifixappleuk
linkdin: @ifixapple
instagram: @ifixapple

[@suryapramoddev]

This guy needs support. Immense work mate :)

[@sheldonbroadbent7122]

I recently got into the whole scene of bringing some life back to friends/family members old macs i love that i found your videos as I’d love to dual boot between the chrome os flex and my Catalina patcher :)

[@MrDazzathedude]

Hiya Sheldon, Glad I could help and you are happy :)

[@articeddie5494]

Thanks for the video, currently using a 2012 Mac mini with a home made fusion drive running Catalina and running Mojave via external ssd for my photoshop 👍🏼

[@buddhiaudioparadise6925]

thank you sir.

[@believeinlove1085]

Currently running Monterey on MBP SSD, APFS. I've created a separate volume on the HardDrive to install High Sierra. I'm wondering about backup. Do I have to do separate manual Time Machine backups to SSD external for each Volume OS? Or does a manual Time Machine backup of the entire MBP cover all the volumes? Also, is it better to just create a volume on the external to run High Sierra? But then what do I backup to? Need High Sierra to use Adobe CS6.

[@i12capea]

Can you do it partitioning your current os x system?

[@sebbrown2995]

I have two hd just switch between the two when needed

[@themediaspotlightuk]

How can I dual boot from Catalina and install Tiger or Leopard?

[@collinlove]

Hi! Thank you for the video. I'm planning on doing a clean install of Monterey 12.2 when it comes out in a few days, then adding a Big Sur volume (both on my internal drive, and using APFS rather than a classic partition). I have already prepared a bootable drive of Big Sur 11.6.2. My intention is to have the Monterey volume be "personal" and the Big Sur volume "work" (some of the software I use for work is really slow to update). This is a really stupid question but... will each volume be required to have its own set of users? I say "set of users" because I always create an "admin" account and then a separate "myname" account for security purposes.

[@MrDazzathedude]

Hello Collin, every system volume will require its own admin account and set of users but your data can be on a shared volume so you wont have to duplicate everything.

[@collinlove]

@@MrDazzathedude Thank you so much for the help! I appreciate it. If possible could you please send me some sort of article or instructions about how to make a shared volume? I've never had a multi-volume setup before so I'm a little lost.

[@messylaura]

might be the answer i'm looking for, i have an early 2015 mac book pro running el capitan which i use photoshop 5 on, a few of my other apps stopped working so i need to update to their requirments, the only reason for sticking with el cap is for ph5, could i partition for el capitan and a newer os like big sur? the mac book is currently a 500gb and i was thinking about upgrading to a 1tb on the same one

[@MrDazzathedude]

Hello and thanks for watching my video. 2015 is a great MacBook, one of my favourite, reliable and without the horrible keyboard problems that followed. Yes this is possible however you must consider a few things as El Capitan uses the old HFS file system and Big Sur uses the new APFS so you will need to create two partitions? format one as HFS and the other APFS. Just one more thing you might need to know as you mentioned upgrading your ssd? hopefully you have Big Sur installer? if choosing to install the latest Monterey you will need to ensure the original Apple hard disk is in the machine first otherwise you will get errors when trying to install Monterey, The first time you install Monterey it will update the firmware in your machine which requires an authentic Apple hard drive installed, Once you have done this you can simply remove the drive replace it with another brand and install Monterey without issues. Hope this helps and please make sure you have a complete backup first….

[@rhettshipley4593]

I am running Ventura. Can I download and install Mojave onto on external hard drive and boot from it? TIA

[@lazlobang2282]

Didnt kno that windows 9 exist

[@MrDazzathedude]

Windows 9 doesn't exist does it? I didn't realise I said anything about windows 9, if i did it was certainly a mistake.. stay safe and have a fab day.....

[@lazlobang2282]

@@MrDazzathedude now u know :)

[@petervenables3842]

can I have 3 os? 1)Mac cat 2) windows 10 and 3)kali ? I know I can do this on windows but have just bought an iMac and need all 3 os for course work as VirtualBox is to slow

[@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!

[@GDName]

Hi. Can you do a video on how to unlock hard disks on the mac on the NEW volume? I'm currently running Catalina but created a second drive and the locked disk won't let me choose it to install OS high sierra. (All of the disks are actually locked and I have no problem booting up to my main drive... catalina). I have a Fusion Drive. I need access to the new drive to do the installation. There are recovery videos but that does not apply to my situation.

[@MrDazzathedude]

Unlock your hard drive? Can you please explain this further? Fusion drives are a pain and perform very slow on high sierra onwards mainly due to not supporting APFS i would suggest removing the rotational disk and installing a full SSD. It will be much faster and ssd’s are much more affordable now, you can leave the small ssd/flash drive side of the fusion drive as backup or system install / testing purposes

[@YOUTUBEREALONE]

do one with chromeos

[@buddhiaudioparadise6925]

Can I run Catalina in external drive to work on softwares?? In my case logs pro? What about the SDD and HDD speed! ? thank you.

[@MrDazzathedude]

Hello, yes it is certainly possible to boot from an external drive, but depending on your machine it will be a fair bit slower, an ssd would help but I wouldn't say this would be good in the long run especially as cables can always accidentally disconnect and could cause problems. I always boot multiple system from external drives to clone the MacOS onto new machines.

[@jeffshepard972]

I have 500gb ssd apfs drive with high Sierra that I run legacy apps on. I created another apfs volume to run Big Sur. When I am in high Sierra and want to boot up in Big Sur, it doesn’t work when I use restart plus the option key. And I don’t see the new volume at all unless I go into disk utility. When I am in Big Sur, I can see the volume in preferences > startup disk and restart in high Sierra. Am I doing something wrong. I just wanted to select the one i needed and go back and forth easily. So far, not as easy as I thought.

[@MrDazzathedude]

Sorry for the late reply as i missed this message. Can you please tell me what mac you are using and is it a factory fitted ssd or was it installed afterwards. also did it come with high sierra or did you update from sierra as at this point it would upgrade hfs+ to apfs. I have encountered this problem with external ssd’s but not internal and it was when the drive was partitioned to use both formats. The reason i ask about the upgrade is because of a firmware update in the process.

[@mattduncan5500]

you didnt show us adding the Osx onto the partitions tho ??

[@LongStep]

Interesting that you touched on the disappointment of apple with operating systems after Sierra. I actually loved High Sierra, but found some applications wouldn't run, so I had to update to Mojave to do what I needed. I tried Catalina and Monterey and was tremendously disappointed at how bloated the systems were as well as extremely limiting. Also, I am and have been a Beta tester for Apple for many years. I stopped when Apple was obtrusively collecting needless information about their users. I am currently running Mojave or HS on all my mac desktops and laptops, but searching for an ideal linux solution. I am also working on linux solutions (not Andriod) to replace my iOS devices and appletv. That's how wrong I think Apple is managing their business.

[@MrDazzathedude]

Hello and yes I agreed with most of what you say but I was more of a Sierra fan rather than High Sierra as when High Sierra arrived there where just WAY TOO MANY problems, mostly due to the arrival of the new APFS file system. after several year this certainly improved and on some machine around the 2011 year this is the highest system they will take and minimum need to even successfully browse the internet nowadays. you say you are a Mojave fan however personally I think if you are willing to accept all the problems that came with Mojave then you are better off using Catalina... Catalina has a more secure OS as this is now installed on a separate Partition/Container and is locked it also give you more longevity. you just need to be aware that it ONLY WORKS with 64bit software. Basically the only Systems I like after much testing, depending on your needs and computer is 10.10 Yosemite, 10.12 Sierra, 10.15 Catalina, and if you must 12 Monterey but as you said this is bloated as was 10.5 leopard when it came out. (you also need to be careful as I have seem many macs knackered (Black screen) after updating to Monterey as this updates your computer firmware and needs an ORIGINAL apple HD installed to do this then you can reinstall the non apple drive and all works ok) I do however install 10.13 High Sierra on old reliable 2011 iMacs for first time Mac Users. with regards to Apple overall managing their business obviously they are doing something right as you don't become a multi trillion dollar company if not, but as for the life span and cost to the end user this is appauling, how can they say they are environmental friendly when they don't allow you to repair your own products. thank goodness for Louis Rossmann who can help with repairs that apple don't want you to do and pushing for the rights to repair.

[@bartram33]

My imac 5.1 is running 10.7.5. I’d like to go back to Snow Leopard 10.6.4 or dual boot, keeping both os, Is this posible? Thanks.

[@MrDazzathedude]

Hello pjr, yes this is certainly possible. being and old white iMac it came pr-installed with 10.4 and can run upto 10.7. it is just a 32bit system and can easily be downgraded, if you want to dual boot you will need to back everything up and partition the disk which will mean erasing everything and cloning you data back to one of the partitions.

[@bartram33]

@@MrDazzathedude many thanks

[@avolaruruguay4625]

Hi I have a late 2011 macbook pro and I would like to install a second ssd in the cd container that I not use is it possible to install another version of mac os in that disc and choose from witch ssd drive I want to boot when I turn on the machine , I don't want to use partition nor external hard drive thanks

[@MrDazzathedude]

Yes that is very straight forward to do, however the 2011 macbook pro can only officially work with up to 10.13 high sierra so you can use high sierra and earlier..

[@avolaruruguay4625]

@@MrDazzathedude Hi thanks for the fast response , yes I am using now Yosemite that runs very well the problem is that I am using it for music only and it is full of music programs that took me months to install and I have a ssd from 1Tera , do you have any video explaining how to install , is it just install the 2 ssd drive in the cd socket and boot with.a high sierra usb with the installer and install it and the the mac pressing alt at the power on it will give you the 2 options to boot ? but I think the issue is that you can not touch the other disk and viceversa because if I copy or delete something the other version of the os will not be updated and it will give me problems with the files right ?

[@IQM24]

Hey thanks! can we add volume and install another OS on that volume instead of boot camp dividing it.

[@MrDazzathedude]

This is for dual booting MacOS, depending on what Mac you have it can be used if you have already created a partition for windows but not necessary. If your mac is capable of running bootcamp (not M1) boot camp sorts itself out..

[@IQM24]

@@MrDazzathedude Thank you, is bootcamp the best option for Microsoft ISO, can it share space. I am also trying Parallels Desktop.

[@MrDazzathedude]

@@IQM24 personally I use run several unix OS’s windows XP, 7 and 10 in vmware fusion. It runs flawlessly and i found it supported hardware much better than in parallels and was faster. I think vmware or parallels would be a better option as long as you have enough memory.

[@enochthestud]

What if I have two ssds in my MacBook? Can I just dual boot using two ssds without partitioning?

[@MrDazzathedude]

if you have two ssd in your MacBook then of course you can dual boot, just like when you partition a drive except better in some circumstances.

[@Carlos-qy4kb]

When i'm using dual boot the display staied duplicate

[@DalXe.]

For some reason I can't get the EFI bootloader to appear I'm following all the steps but nothing showing up

[@DalXe.]

When I plug in my flash drive I get an EFI boot option but every time I click it it takes me into system startup disk

[@StevenClements]

Why partition at all... why not just stick an external HD and use that for your odd ball test OS

[@MrDazzathedude]

Hello Steven and thank you for your comment, yes of course you have a valid point and depending on your circumstances an external would also work, however this is not as practical, stable, permanent and certainly not as fast. if you are using apfs you could simply create a partition, install your OS for testing. If all is ok you can simply delete your old OS partition without having to backup, erase and restore etc. If you wish to run both Mac OS’s for whatever reason you could have a third partition with just your data on. There are several reasons and limitations running from an external but of course in most cases this too is possible. All the best Darren

[@Alexplayz553]

Did he say windows 7,8,9 and 10 he does know that there is no windows 9

[@davestechstuff8222]

mmm yes. windows 9

[@mattduncan5500]

this is more of a partitioning video than a bootable drive video .

[@tre4surehunter9]

windows 9 doesn’t exist

[@MrDazzathedude]

Yes several people have pointed this out to me and was my mistake, I never admitted to being a windows expert as you can obviously tell 😁