TrueSoprano
Level 1 (4 points)
Windows Software

Q: Messed something up in BootCamp

I'm trying to install Windows 10 on my MacBook Pro using BootCamp, and I'm having a lot of trouble getting the ISO on my 8gb USB drive. I downloaded the 64 bit version and tried to create the install disk, but I kept getting the "your bootable USB drive could not be created" error. I unchecked the bottom two boxes and that seemed to improve the process, but I was still getting the error. I read somewhere that you had to unmount the ISO file, but I didn't know how to do that and I found absolutely no tutorials online.

 

I then found a disk icon on my desktop that wasn't my flash drive, and I had no idea what it was, so I ejected it to see if that would unmount the file. That's where I messed up. Now whenever I try to create the drive I get the "Boot Camp only supports Windows 7 or later installation on this platform" error, even though it's a Windows 10 ISO! I downloaded the 32 bit version to see if that would make a difference, or if just downloading a new ISO would work, but I still got the same error message.

 

I have no idea what to do, and I'm afraid I seriously messed something up. Windows 10 is expensive and I don't want all that money I spent to go to waste. Can anyone help?

 

EDIT: I opened the 64 bit ISO file and the disk icon thing reappeared. (it's named CCSA_X64FRE_EN-US_DV5 if that helps anyone) I can't open the 32 bit file because "resource busy", and I can't start installing it. I can start installing again with the 64 bit but I still get the first error.

MacBook Pro (15-inch Mid 2012), OS X Mavericks (10.9.5), null

Posted on Sep 28, 2016 12:51 AM

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TrueSoprano

Q: Messed something up in BootCamp

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  • Helpful answers

  • by haipowerfull,

    haipowerfull haipowerfull Sep 28, 2016 3:11 AM in response to TrueSoprano
    Level 1 (12 points)
    Mac OS X
    Sep 28, 2016 3:11 AM in response to TrueSoprano

    Have you updated to the latest Boot Camp Assistant?

    If not, update and try again.

  • by Loner T,

    Loner T Loner T Sep 28, 2016 4:57 AM in response to TrueSoprano
    Level 7 (24,869 points)
    Safari
    Sep 28, 2016 4:57 AM in response to TrueSoprano

    Your ISO must be unmounted. Do not eject it. It can be unmounted in Disk Utility. Disconnect all external storage, run SMC/NVRAM reset, connect the USB flash drive, run BCA and check the first two options - Create USB Installer, Download drivers and create your USB. If it works, run BCA an check only the last option - Install - and use the USB Installer that you just created.

  • by TrueSoprano,

    TrueSoprano TrueSoprano Sep 28, 2016 1:18 PM in response to haipowerfull
    Level 1 (4 points)
    Windows Software
    Sep 28, 2016 1:18 PM in response to haipowerfull

    I have version 5.1.2 and can't seem to find any updates.

  • by Loner T,

    Loner T Loner T Sep 28, 2016 3:23 PM in response to TrueSoprano
    Level 7 (24,869 points)
    Safari
    Sep 28, 2016 3:23 PM in response to TrueSoprano

    5.1.2 is the version of BC Assistant.

  • by TrueSoprano,

    TrueSoprano TrueSoprano Sep 28, 2016 5:04 PM in response to Loner T
    Level 1 (4 points)
    Windows Software
    Sep 28, 2016 5:04 PM in response to Loner T

    This is gonna sound stupid but I don't know how to do any of that. I opened the ISO in Disk Utility but I have no idea what to do from there. I don't think I have any external storage. (is the USB external storage though?) All I managed to do was a NVRAM reset but that didn't do anything.

     

    EDIT: I figured out how to unmount. Unfortunately, whenever I try to install with the unmounted file, I get the windows 7 and above error message. I did another NVRAM reset (I think) but it did nothing.

  • by Loner T,

    Loner T Loner T Sep 28, 2016 5:08 PM in response to TrueSoprano
    Level 7 (24,869 points)
    Safari
    Sep 28, 2016 5:08 PM in response to TrueSoprano

    1. Run SMC Reset.

    2. Connect the 8GB USB2 flash drive to the Mac.

    3. Start BC Assistant.

    4. If you have a CD/DVD icon on your desktop, right-click on and eject it.

    5. Click on the first two options - Create and Download. Make sure you are connected to the network using a wired connection, otherwise it will be very slow.

    6. You will be prompted for the location of the ISO. Browse and locate your ISO file.

    7. Let the process complete. Your USB Flash drive should look similar to the following structure in Finder. The files in $WinPEDriver$ may look different.

     

    BA-USB-ISO-W7.png

  • by TrueSoprano,

    TrueSoprano TrueSoprano Sep 28, 2016 8:51 PM in response to Loner T
    Level 1 (4 points)
    Windows Software
    Sep 28, 2016 8:51 PM in response to Loner T

    I think I managed an SMC reset but I'm still getting the same error message.

  • by Loner T,

    Loner T Loner T Sep 29, 2016 4:37 AM in response to TrueSoprano
    Level 7 (24,869 points)
    Safari
    Sep 29, 2016 4:37 AM in response to TrueSoprano

    The ISO file name that you have provided (CCSA_X64FRE_EN-US_DV5) is derived from a physical Windows DVD. Can you download a W10 64-bit ISO file from https://www.microsoft.com/en-us/software-download/windows10ISO using a wired network connection and use it to create the USB Installer?