Try a Beta of CloudReady & Windows Dual Boot!

Hi friend,


We're excited to have something for you to try. We've been hard at work on a dualboot feature for CloudReady, and we want you to try this alpha-release of it.




I know that is very limiting for older machines, or those of you who want to dual boot Linux, but all things start small. 

Please note that many machines which have a Legacy BIOS install of Windows have the capacity to run UEFI Windows in the BIOS, so if you're willing to reinstall Windows as UEFI, you can then install CloudReady alongside it.

You can check if your Windows install is UEFI by reading the directions here.


UEFI is not the ONLY requirement!

Here are some important notes on system requirements.


In addition, because this is a pre-release build, we want to warn you about a variety of other issues, features, and forward looking questions:


  • CloudReady dual boot will allow up to 15 pre-existing Windows (or Windows related) partitions, and install CloudReady in partitions 16-27.
  • CloudReady will fail to install dual boot if your machine isn't in proper adherence to the requirements listed on the link above. Only in some cases will you receive clear feedback on what is wrong or missing. Refer to the link above and check everything if you have a problem.
  • CloudReady may fail to install dual boot for many other reasons, few of which will be immediately clear - please send us a picture of the errors you see.
  • CloudReady will add an additional EFI boot option on every boot (minor bug we're ironing out right now). You can ignore those for now, but should be aware that over a long period of time this may be unhealthy.
    • This mean you cannot leave this version of CloudReady installed permanently. The machine will update itself automatically when our stable version comes out, but you may STILL need to reinstall CloudReady completely at some point
  • Your Windows install and files MAY NOT BE SAFE. We designed this install to respect and protect your existing OS and files, but this is a pre-release test build, so no guarantees are made. It has only been tested in house by our team. 
  • The following models are known not to work for DualBoot EVEN IF all other requirements are met:
    • HP EliteBook 8560p Notebook PC
      HP ProBook 6560b Notebook PC
      HP ProBook 6360b Notebook PC
      HP EliteBook 8460w Mobile Workstation
      HP EliteBook 8460p Notebook PC
      HP ProBook 6460b Notebook PC


For those of you brave enough to give this a shot - THANKS! Below are the links for the image (make your installer the same way as before) and checksums.


[old beta image link redacted ;-) ]

(Checksums at


Please report anything and everything you experience with this release in the new Community Dual Boot Section, but be aware that we will not be releasing any fixes or patches or providing any direct support for this version. 


We hope you enjoy!!!

Have more questions? Submit a request


  • Avatar
    Alexandru Bangau

    Is this platform going to receive regular updates?

    What are the cons and the pros by installing this as a main OS without actually dual-booting.

    I'm now running it from a usb thumb drive in UEFI mode but had to enable legacy mode in bios for a proper booting 

    Edited by Alexandru Bangau
  • Avatar
    Forrest Smith
    Alexandru, We'll still provide standard updates through this beta build, but there's always the possibility that you'll need to reinstall CloudReady for one reason or another. Reinstalling CloudReady on a dualboot machine will just overwrite your CloudReady partition.
  • Avatar
    Bjarne Oldrup
    Thats so cool! Making CloudReady more flexible is sure helping proliferation!. I've JUST made a fresh install of Windows 10 on my laptop, so I'm certainly going to try dualboot on the extra internal SSD.
  • Avatar
    Deryk Lister
    Thanks for this! Gave me a starting point with dual booting with OS X on my MacBook. It works :) I used Disk Utility to shrink the Mac partition and make an msdos one for cloudready, booted into CR, deleted the msdos partition, remounted root as writeable, edited install script, commented out the two lines that look for an existing Windows installation.
  • Avatar
    Deryk, that's awesome and exactly what I've been wanting too. Would it be too much to ask for a step-by-step.?
  • Avatar
    Deryk Lister

    Here are the notes I kept, hope it helps! The fdisk section is a little brief, but if you get confused I think it's "?" or "h" to get help at the fdisk command line and see what all the commands do. Editing the installation script in vim is also tricky if you don't know vim - see a tutorial here

    Install OS X

    Create CloudReady USB

    Shrink OS X by 16GB and make the other partition ms-dos

    Boot CloudReady

    Go through account setup motions



    sudo fdisk /dev/sda   (password chrome)

    delete temporary msdos partition, x, M, r to get MBR mode, delete it from there too, w, x, M, r, w

    sudo partprobe

    cd /opt/neverware


    in install section comment out ''neverware_repartition.repartition_for_install(dest)'' (line 126 currently) and ''neverware_bootloader.do_inject_winpart(dest)''. Note, indentation in python files is important. Put the # symbols in exactly the same spacing and indentation as the other lines adjacent.

    Now just run installer from tray menu and choose dual boot.

    Edited by Deryk Lister
  • Avatar
    This is great, thanks! I'll give it a shot tomorrow, got to get some sleep now.
  • Avatar
    A. A.
    Hey Forrest, the main section of the site allows me to download version 45.3.39 which seems to newer than the version in this forum post (45.3.29). Is the 39 version also dual-boot? Also do you guys need someone to post release notes for new versions or have I missed the section where they are announced?
  • Avatar
    Forrest Smith
    A.A. - I just updated this link to have the 45.3.39 link - you're right that this was out of date. Both are early dual boot enabled builds. The reason we haven't written up release notes is because we are "soft launching" - trying to guage stability and usage prior to widely announcing the availability of this feature, in case we need to make some changes. The only real changes in 45.3.39 are for stability and error-checking of the dual boot feature. Thanks for your interest!
  • Avatar
    Deryk Lister

    FYI I just had to reinstall and forgot a couple of steps in my instructions to dual boot a Mac.

    Before editing the installer file you have to "mount -o remount,rw /" or it will be read-only.
    It's also necessary to comment out the "if dualboot" line that comes above the second of the two commands that have to be commented. Also the vim command needs to be prefixed with sudo.

  • Avatar
    Ethan Fenichel

    I am wanting to try this Dual-Boot option on an older ASUS X54L (not listed as compatible - but it does have UEFI). I think my issue now is that my HD (only 1) is MBR and not GPT. I've setup a Windows 10 USB to boot with to GPT so that I don't lose Windows. Will I need to now format my HD and then will I be able to set it to GPT? Is that possible? From there, I'm hoping I can reinstall Windows 10 and CloudReady so that I can dual boot, which would be amazing. Thanks!

  • Avatar
    Forrest Smith

    Ethan -

    You should be able to just reinstall Windows (from USB) in UEFI mode (no need to format in advance). Once you have a confirmed-working UEFI-mode Windows install you can THEN USB-boot CloudReady in UEFI mode and run the dualboot install.

    Hope that helps - open a separate thread about your issue is this doesn't solve it.

  • Avatar
    Ethan Fenichel

    Thanks, that didn't quite workout - I've opened a new thread here:

  • Avatar
    Ayush Baid

    Is it possible to install Windows after installing CloudReady? If yes, what are the steps?

  • Avatar
    Forrest Smith

    It's possible, but I can't walk you through it. You would need a deep understanding of partitioning, GPT, and Windows Boot Manager.

    hope you can work it out!

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