1. Make Usb Bootable Windows 10
2. Windows Bootable Usb Tool
3. Mac Os Bootable Usb On Windows
4. Mac Os Bootable Usb From Windows 10
5. Windows 10 Bootable Usb Install

Windows 10 has its own feature that can create Windows to Go to create a portable workspace. But it has many restrictions, for example, it requires a USB certified by Microsoft, and it needs at least 32GB, the most serious is that it can only do in the Windows 10 Enterprise. We'll show you to create a bootable USB flash drive with the Windows 10 installer from a Mac. It's easier than you think, thanks to the built-in Boot Camp Assistant from Apple. Download Windows 10. Windows 10 is able to run on all modern Mac hardware in a dual boot environment thanks to Boot Camp. If you’re aiming to run Windows alongside OS X on the same Mac, you’ll want to create a bootable Windows 10 installer drive out of a USB drive, which can be done quickly from OS X and the Boot Camp Assistant tool.

I'm trying to get my Mac to boot from a USB flash drive. I know the drive works and is bootable, because it works with my friend's Windows PC.

Specifically, I was running Windows 7 on my Mac to create the bootable disk, which has Windows Defender Offline on it. I have had the same issue trying to use the Ultimate Boot CD on a USB, various Live USBs for Linux, etc.

So, what do I have to do to get my Mac to recognize and boot from another OS on a USB flash drive?

Make Usb Bootable Windows 10

Or maybe a better question, if there isn't a simple answer, would be what does Bootcamp do to allow booting from a Windows install DVD or to allow Windows, once installed, to boot?

EDIT: I was able to sort of get results using the bless command in Terminal. Specifically, I used

sudo bless -mount '/Volumes/WDO_Media32/' -legacy -setBoot -nextonly

and then did a restart. Boot was slower, but then I was presented with the normal log-in screen. The log in screen, though, was much slower than usual, as if something else was happening in the background. So, I seem to be effecting something with that command, but I still can't boot from my Windows bootable USB drive.

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4 Answers

Boot Camp has to emulate a BIOS system, as Windows requires this to run. Apple uses something called the bless tool in order to instruct EFI (which Macs are based on) to activate this BIOS system.

However, if I recall correctly, emulation of BIOS is not supported on Mac for any device that is not attached via a SATA connection (ie. internal drive, DVD drive). So, I believe that you cannot boot from your USB key.

If you want, you could install an alternative bootloader on your Mac that would allow you to do this. See this post for more info.

Nathan WalkerNathan Walker

You can in fact boot Windows from a USB drive on a Mac.

I've done this recently with the Windows 10 Technical Preview, but the software I used should work with Windows 7+, but it does have a disclaimer that says Windows 7 does not support USB 3.0, so if you're trying this on a newer Mac, you'd have to use Windows 8 or higher.

I'm booting Windows 10 off of an external USB to SATA hard drive dock. It takes a while for Windows to boot, but it runs okay once it's started. I imagine it'd be much faster if I was running USB 3.0.

I needed another Windows computer to run the utility called 'WinToUSB' here is a link to their site: http://www.easyuefi.com/wintousb/

You will need a Windows installer disk or ISO image to create the bootable image.

Do NOT attempt to create or format any of your Mac partitions from within Windows because there is a very high chance you will lose some/all of your Mac data.

I ran into this issue a while back when I wanted to run Windows off and EHD so it wouldn't take up any space on my Macbook's HD.

The issue you are running into is that you need to setup an EFI boot in order to be able to boot and run Windows off a USB drive.

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I used this tutorial to do it myself: https://discussions.apple.com/thread/7587958

You'll need a computer running Windows to do this entire process. I didn't have access to one so I just installed a VMware trial version on my Mac and used it for the Windows part of the setup. As always, backup your data beforehand just in case!

Hardware I'm using:Macbook Pro, Retina, 13', Early 2015 (120GB SSD, 8GB RAM)

Western Digital Ultra SSD 120 GB: https://www.amazon.com/SanDisk-120GB-Solid-State-SDSSDA-120G-G27/dp/B07621PNWC/ref=sr_1_22?ie=UTF8&qid=1516934105&sr=8-22&keywords=western+digital+ssd

USB Enclosure for External SSD: https://www.amazon.com/Tool-Free-External-Enclosure-SATA-II-SATA-III/dp/B00OZM7PES/ref=sr_1_4?ie=UTF8&qid=1516934275&sr=8-4&keywords=sata+usb+3.0+unitek

Here is the basic process I followed: https://discussions.apple.com/thread/7587958

It didn't work perfectly for me - but the issues I ran into were solved fairly easy with Google searches.

If you have the Windows installer ISO create the USB again using the Boot Camp Assistanty in the Utilities folder. That will ensure all the necessary drivers etc are included.

The model of Mac may also determine which version of Windows is officially supported. For instance this support article from Apple on installing Windows 7 doesn't list anything more recent than 2014 models as supported. Or see here for information on other versions of Windows.

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Preparing a bootable USB of Windows 10 is as simple as making a bootable USB of Windows 8 or Windows 7. In fact, all the methods and tools out there to create Windows 7 bootable USB work great with Windows 10 as well.

To prepare the bootable UEFI USB drive of Windows 10, we recommend using a free tool called Rufus over the Microsoft USB/DVD Download Tool as Rufus is more reliable and offers more features when compared to other tools in the market.

But since there are many users who might want to use the official Windows USB/DVD Download Tool, we will be using the tool to prepare the bootable USB of Windows 10. And we will use the free Rufus tool to prepare bootable UEFI Windows 10 USB drive (method 1).

Method 1 of 2

Bootable UEFI USB of Windows 10 using Rufus

UPDATE on April 2nd, 2019: Rufus now supports downloading Windows 10 ISO from Microsoft. Refer to our how to download Windows 10 ISO using Rufus guide for directions.

Step 1: Visit this page and download the latest version of Rufus. Rufus is a portable utility and hence doesn’t require an installation.

Step 2: Connect your 8GB+ USB drive to your PC. Be sure to backup all data from your USB drive.

Step 3: Run the Rufus utility. Click the Yes button when you see the UAC prompt to launch the tool.

Step 4: Under the Device section, select the USB drive that you want to make bootable, select MBR partition scheme for BIOS or UEFI computers, or GPT partition scheme for UEFI computer depending the type of partition type on your PC.

Step 5: Next, select the File system as FAT32 (default) as it supports both BIOS and UEFI. But if you’re sure that your PC doesn’t support UEFI, you can choose NTFS for a faster installation.

Step 6: Enter a volume label, click on the CD/DVD drive icon to browse to the Windows 10 ISO image file. Select the file. To download the latest ISO, please go through download Windows 10 ISO from Microsoft guide.

Step 7: Finally, click the Start button, click the OK button when you see the warning dialog to continue its job.

Once Rufus completes its job, you’ll see the “Done” message. That’s it!

You can now open UEFI settings and make necessary changes to boot from USB drive.

Method 2 of 2

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Windows 10 bootable USB using USB/DVD Download Tool

IMP: If you get “The selected file is not a valid ISO file” error, please follow the instructions mentioned in our how to fix the selected file is not a valid ISO file error guide.

WARNING: Before using this tool, please make sure that your PC doesn’t support UEFI as Windows USB/DVD Download Tool doesn’t help you prepare the bootable USB for UEFI PCs. To create a bootable USB of Windows 10 for UEFI supported PCs, please follow the instructions in Method 1.

Step 1: Click on this official link to download Windows USB/DVD Download Tool directly from Microsoft servers.

Step 2: Connect a USB flash or hard drive with 4GB+ capacity and backup data before continuing further. Please be sure to back up all data from your USB drive as the drive will be formatted in the coming steps.

Step 3: Run the downloaded USB/DVD Download Tool setup file and then follow the easy on-screen instructions to get it installed on your PC running Vista, Windows 7, Windows 8 or Windows 8.1.

Step 4: Launch Windows 7 USB/DVD Download Tool, click the Browse button to browse to the folder where Windows 10 ISO image file is located. After selecting the ISO image, click the Next button.

Step 5: In the following screen, you need to select the USB device as your media type. To do so, click on the USB device button. And if you want to prepare the bootable DVD, please click DVD instead.

Windows Bootable Usb Tool

Step 6: Next, you’ll be asked to select your USB drive. Please carefully select your USB drive from the drop-down list before clicking the Begin Copying button. Again, it’s important to note that a wrong selection of drive will cause data loss.

Mac Os Bootable Usb On Windows

The Windows 7 USB/DVD Download Tool starts copying all the contents of the ISO image to the USB drive and will make it bootable in a couple of minutes.

Mac Os Bootable Usb From Windows 10

Once done, you can connect bootable USB to the PC on which you want to install Windows 10, change BIOS settings to boot from USB, and start installing Windows 10.

Windows 10 Bootable Usb Install

Hope this helps!