Darrell Stall
Level 1 (22 points)
Mac OS X

Q: Can I install Windows 10 from Bootcamp Asst USB created drive?

I got the following message when opening Boot Camp -

"The startup disk cannot be partitioned or restored to a single partition.

The startup disk must be formatted as a single Mac OS Extended (Journaled) volume or already partitioned by Boot Camp Asst for installing Windows."

My startup disk is formatted as a Mac OS Extended (Journaled) volume, so I clicked OK, but then the 3rd box on the Select Tasks screen was greyed out so I couldn't check "Install or remove Windows 7 or later version, so I left the 1st two boxes checked and ran BCA to "Create a Windows 7 or later version install disk", and "Download the latest Windows support software from Apple", after which I only had option to quit, not install a partition or anything else.

Now, when I boot to startup manager, it shows my OSX HD, the EFI boot drive and a Windows drive.

When I select it, message says "Booting from Boot Camp Asst USB created drive . . ."

What happens when I let that drive run installation of Windows 10?

Is it going to create a Windows partition?
If not where is it going to install Windows? over my OSX 10.11 startup disk?!!! or what?

Note: The USB created drive was created from the Windows 10 iso that I downloaded as Windows developer which can be used without an installation key.

I used it with Parallels Desktop without any problem.

Mac mini (Late 2012), OS X El Capitan (10.11.2), 2.3GHz, 16GB RAM

Posted on Jul 24, 2016 3:36 PM

by Loner T,Solvedanswer
Loner T Loner T
Level 7 (23,828 points)
Safari
A:

1. Please back up OSX first.

 

2. Merge partitions.

     diskutil mergePartitions jhfs+ "MAC_MINI" disk0s2 disk0s4

 

diskutil mergePartitions

Usage:  diskutil mergePartitions [force] format name

        DiskIdentifier|DeviceNode DiskIdentifier|DeviceNode

 

Merge two or more pre-existing partitions into one.  The first disk parameter

is the starting partition; the second disk parameter is the ending partition;

this given range of two or more partitions will be merged into one.

 

All partitions in the range, except for the first one, must be unmountable.

 

All data on merged partitions other than the first will be lost; data on the

first partition will be lost as well if the "force" argument is given.

 

If "force" is not given, and the first partition has a resizable file system

(e.g. JHFS+), it will be grown in a data-preserving manner, even if a different

file system is specified (in fact, your file system and volume name parameters

are both ignored in this case). If "force" is not given, and the first

partition is not resizable, you will be prompted if you want to erase.

 

If "force" is given, the first partition is always formatted. You should

do this if you wish to reformat to a new file system type.

 

Merged partitions are required to be ordered sequentially on disk.

See diskutil list for the actual on-disk ordering; BSD slice identifiers

may in certain circumstances not always be in numerical order but the

top-to-bottom order given by diskutil list is always the on-disk order.

 

Ownership of the affected disk is required.

 

Example: diskutil mergePartitions JHFS+ NewName disk3s4 disk3s7

         This example will merge all partitions *BETWEEN* disk3s4 and disk3s7,

         preserving data on disk3s4 but destroying data on disk3s5, disk3s6,

         disk3s7 and any invisible free space partitions between those disks;

         disk3s4 will be grown to cover the full space if possible.

This will merge disk0s3 and disk0s4 into disk0s2, leaving the main OSX partition.

 

 

3. Re-install OSX to get Recovery HD back. Be aware, Internet Recovery may provide the shipping version of OSX, not your current version. Please see About OS X Recovery - Apple Support for reference.

 

4. If you prefer to do this without touching your internal disk, then How to install OS X on an external drive connected to your Mac - Apple Support, upgrade the external disk OSX version to match your internal disk's OSX version. Boot from this external disk and re-install OSX on the internal disk after step 2. This will give you Recovery HD which matches El Capitan. Re-installing OSX does not manipulate any non-OSX files, but a backup is strongly recommended to work around "crApple Engineering" failures.

Posted on Jul 25, 2016 8:00 AM

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Darrell Stall

Q: Can I install Windows 10 from Bootcamp Asst USB created drive?

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  • Helpful answers

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  • by Darrell Stall,

    Darrell Stall Darrell Stall Jul 25, 2016 8:09 AM in response to Loner T
    Level 1 (22 points)
    Mac OS X
    Jul 25, 2016 8:09 AM in response to Loner T

    What do you mean by "new name"?

    I entered -

    diskutil mergePartitions HFS+ Apple_HFS MAC_MINI  disk0s2 disk0s3 disk0s4

     

    HFS+ Apple_HFS MAC_MINI  is the name diskutil lists for my main OS HD.

    The now blank (former Recovery) HD are disk0s3 disk0s4

     

    So what's wrong with my Terminal command, the reason it doesn't work?

  • by Darrell Stall,Helpful

    Darrell Stall Darrell Stall Jul 25, 2016 9:45 AM in response to Loner T
    Level 1 (22 points)
    Mac OS X
    Jul 25, 2016 9:45 AM in response to Loner T

    Doesn't work. Now Blank partitions show on my desktop.

     

    Last login: Mon Jul 25 09:37:39 on console

    Mac-mini:~ darrellstall$ diskutil mergePartitions jhfs+ "MAC_MINI" disk0s2 disk0s4

    Merging partitions into a new partition

        Start partition: disk0s2 MAC_MINI

        Finish partition: disk0s4 Blank

    Started partitioning on disk0

    Merging partitions

    Waiting for the disks to reappear

    Growing disk

    Finished partitioning on disk0

    /dev/disk0 (internal, physical):

      #:                      TYPE NAME                    SIZE      IDENTIFIER

      0:      GUID_partition_scheme                        *1.0 TB    disk0

      1:                        EFI EFI                    209.7 MB  disk0s1

      2:                  Apple_HFS MAC_MINI                999.9 GB  disk0s2

      3:                  Apple_HFS Blank                  650.0 MB  disk0s3

      4:                  Apple_HFS Blank                  650.0 MB  disk0s4

    Mac-mini:~ darrellstall$

  • by Loner T,Helpful

    Loner T Loner T Jul 25, 2016 9:45 AM in response to Darrell Stall
    Level 7 (23,828 points)
    Safari
    Jul 25, 2016 9:45 AM in response to Darrell Stall

    Can you please reboot and check? Kernel may have a cached GPT.

  • by Darrell Stall,

    Darrell Stall Darrell Stall Jul 25, 2016 8:17 AM in response to Darrell Stall
    Level 1 (22 points)
    Mac OS X
    Jul 25, 2016 8:17 AM in response to Darrell Stall

    In Disk Utility, I could select each of the blank HD paritions, and clicke the "-" sign to delete them and grow the main OS HD partition, but then when I clicked apply, I got an "Operation Failed" error message, and now the "-" sign is greyed out on one of the bland HD partitions.

  • by Loner T,

    Loner T Loner T Jul 25, 2016 8:19 AM in response to Darrell Stall
    Level 7 (23,828 points)
    Safari
    Jul 25, 2016 8:19 AM in response to Darrell Stall

    If the reboot does not correct the issue, boot into Internet Recovery, and run Utilities -> Terminal and enter

     

    diskutil repairDisk disk0

  • by Darrell Stall,

    Darrell Stall Darrell Stall Jul 27, 2016 8:05 AM in response to Loner T
    Level 1 (22 points)
    Mac OS X
    Jul 27, 2016 8:05 AM in response to Loner T

    I'm through messing around with Boot Camp!

    How can I delete Windows partition, get my startup disk to show back up and get back to where I started?

    I was able to install Windows 10 in Boot Camp, but my Apple wireless keyboard wouldn't pair.

    So I uninstalled Windows 10 with Boot Camp and reinstalled it.

    Now, I have no startup disks in Startup Manager of System Prefs, and when I try to delete Windows, I can't because now the 3rd option in Boot Camp is greyed out again as if it doesn't recognize the Boot Camp partition and the additional unrecognized partition is preventing deletion/install of Windows.

    When I try to use Terminal to erase the Boot Camp partition I get -

    "Windows_NTFS does not appear to be a valid file system format

    Use list diskutil list Filesystems to view a list of supported file systems"

    When I try to use Terminal to merge the partitions I get -

    "Merging partitions into a new partition

        Start partition: disk0s1 MAC_MINI

        Finish partition: disk0s2 BOOTCAMP

    Merging partitions encountered error "Couldn't read partition map (-69876)".

    The erase will not occur."

    Also, the EFI partition no longer shows in diskutil list -

    0:     FDisk_partition_scheme                        *1.0 TB     disk0

    1:     Apple_HFS MAC_MINI                699.9 GB   disk0s1

    2:     Windows_NTFS BOOTCAMP                300.0 GB   disk0s2

  • by Loner T,

    Loner T Loner T Jul 27, 2016 8:33 AM in response to Darrell Stall
    Level 7 (23,828 points)
    Safari
    Jul 27, 2016 8:33 AM in response to Darrell Stall

    You have created a couple of problems for yourself.

     

    1. Your disk is no longer GPT, so OSX may have problems booting.

    2. disk0s1 is the EFI partition, but your mergePartitions command(s) may have been used incorrectly, so your EFI is gone.

    3. Do you have a Time Machine back up of OSX? If yes, I suggest you boot into Internet Recovery, and erase your internal disk, and restore from TM backup.

  • by Darrell Stall,

    Darrell Stall Darrell Stall Jul 27, 2016 10:20 AM in response to Loner T
    Level 1 (22 points)
    Mac OS X
    Jul 27, 2016 10:20 AM in response to Loner T

    I will make a current Carbon Copy Cloner backup for restoration since the one I have isn't up to date and restore if I have to, but surely there's something else that can be tried.

    I don't have any problem booting into OSX.
    No startup drives show in System Prefs, but they do show if I boot into startup mode.

    Previously when booting into startup mode, there were 4 startup disks -

    OSX 10.11.6, Windows 10, and smaller partitions - EFI, and Windows.

    EFI partition has never appeared in startup mode until a few days ago after I starting working with Boot Camp.

    So yes "I" created the problem by foolishing thinking that using Boot Camp would be trouble free.

    When I finally got Boot Camp to install, there was a Boot Camp icon on my desktop (per my prefs), and Boot Camp in Startup of System Prefs,

    but when I started over, deleted Boot Camp and reinstalled, now I have nothing in Startup of System Prefs, and cannot delete/install Windows (that option greyed out again like from the start before deleting Recovery HD partitions).

    The EFI partition disappeared after I ran Boot Camp the second time, not from running merge in Terminal.

  • by Loner T,

    Loner T Loner T Jul 27, 2016 10:55 AM in response to Darrell Stall
    Level 7 (23,828 points)
    Safari
    Jul 27, 2016 10:55 AM in response to Darrell Stall

    EFI is not a bootable partition, but is required on a GPT disk. Can you post the output of

     

    sudo gpt -vv -r show /dev/disk0

     

    Let us try and fix the GPT first.

  • by Darrell Stall,

    Darrell Stall Darrell Stall Jul 27, 2016 11:10 AM in response to Loner T
    Level 1 (22 points)
    Mac OS X
    Jul 27, 2016 11:10 AM in response to Loner T

    Note: I have a 1TB external HD attached for running backup - /dev/disk1 (external, physical)

    sudo gpt -vv -r show /dev/disk0

    gpt show: /dev/disk0: mediasize=1000204886016; sectorsize=512; blocks=1953525168

    gpt show: /dev/disk0: MBR at sector 0

    gpt show: /dev/disk0: Pri GPT at sector 1

    gpt show: /dev/disk0: Sec GPT at sector 1953525167

          start        size  index  contents

              0          1        MBR

              1          1        Pri GPT header

              2          32        Pri GPT table

              34          6      

              40      409600      1  GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B

          409640  1366915872      2  GPT part - 48465300-0000-11AA-AA11-00306543ECAC

      1367325512      263352      

      1367588864  585934848      3  GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

      1953523712        1423      

      1953525135          32        Sec GPT table

      1953525167          1        Sec GPT header

  • by Loner T,

    Loner T Loner T Jul 27, 2016 11:12 AM in response to Darrell Stall
    Level 7 (23,828 points)
    Safari
    Jul 27, 2016 11:12 AM in response to Darrell Stall

    Do you GPT Fdisk installed?

  • by Darrell Stall,

    Darrell Stall Darrell Stall Jul 27, 2016 11:14 AM in response to Loner T
    Level 1 (22 points)
    Mac OS X
    Jul 27, 2016 11:14 AM in response to Loner T

    no. how do i do that? sourceforge?

  • by Darrell Stall,

    Darrell Stall Darrell Stall Jul 27, 2016 11:19 AM in response to Loner T
    Level 1 (22 points)
    Mac OS X
    Jul 27, 2016 11:19 AM in response to Loner T

    Do I need that installed? See -

    Repairing Boot Camp after creating new partition

  • by Loner T,

    Loner T Loner T Jul 27, 2016 11:42 AM in response to Darrell Stall
    Level 7 (23,828 points)
    Safari
    Jul 27, 2016 11:42 AM in response to Darrell Stall

    You can download from https://sourceforge.net/projects/gptfdisk/ and install. Once you have it installed, we should eb able to convert the disk back to GPT. Your EFI (GPT1) is still there.

  • by Darrell Stall,

    Darrell Stall Darrell Stall Jul 27, 2016 11:45 AM in response to Loner T
    Level 1 (22 points)
    Mac OS X
    Jul 27, 2016 11:45 AM in response to Loner T

    OK it's installed.

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