Bassermann One
Level 1 (4 points)
Windows Software

Q: Partition Chaos after deleting boot camp partition

hello guys,

 

 

after i was updating win10 with the new update... which was a bad idea... i tried to make a clean install of it.
after failing hard to do this, im really stuck and dont know what to do:

 

boot camp doesnt let me delete it, they 3rd option is always greyed out. so i deletet it with the disk tool and tried to install win10 via boot camp several times - it doesnt work because always is something worng with the partition i chose in the install.

 

no i think i really messed up my partitions and i really dont know what to do anymore, so i post this:

/dev/disk0 (internal, physical):

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:      GUID_partition_scheme                        *121.3 GB   disk0

   1:                        EFI EFI                     209.7 MB   disk0s1

   2:          Apple_CoreStorage Internal Drive          121.0 GB   disk0s2

   3:                 Apple_Boot Boot OS X               134.2 MB   disk0s3

/dev/disk1 (internal, physical):

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:      GUID_partition_scheme                        *1.0 TB     disk1

   1:                        EFI EFI                     209.7 MB   disk1s1

   2:          Apple_CoreStorage Internal Drive          483.9 GB   disk1s2

   3:                 Apple_Boot Recovery HD             650.0 MB   disk1s3

   4:         Microsoft Reserved                         16.8 MB    disk1s4

   5:           Windows Recovery                         471.9 MB   disk1s5

   6:                        EFI NO NAME                 104.9 MB   disk1s6

   7:                  Apple_HFS 123                     514.7 GB   disk1s7

/dev/disk2 (internal, virtual):

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:                  Apple_HFS Macintosh HD           +599.0 GB   disk2

                                 Logical Volume on disk0s2, disk1s2

                                 1D528A9D-C552-417B-BF2A-C9C6AA49B5FD

                                 Unencrypted Fusion Drive

/dev/disk3 (external, physical):

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:     FDisk_partition_scheme                        *16.0 GB    disk3

   1:                 DOS_FAT_32 WININSTALL              16.0 GB    disk3s1could help me to

 

 

 

maybe someone can help me to get through this... i really dont know what to to "reset"  my partitions so i can start over installing win10 again.

 

imac 5k late 2014, 1tb fusion drive, el capitan 10.11.6

 

 

 

 

 

 

 

 

 

 

 

 

iMac with Retina 5K display, Other OS

Posted on Aug 22, 2016 11:10 AM

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Bassermann One

Q: Partition Chaos after deleting boot camp partition

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  • Helpful answers

  • by Loner T,Helpful

    Loner T Loner T Aug 22, 2016 12:23 PM in response to Bassermann One
    Level 7 (23,663 points)
    Safari
    Aug 22, 2016 12:23 PM in response to Bassermann One

    Disconnect the external disk(s) till Windows is fully installed.  If you are prompted for a USB, use only a flash drive, not a USB HDD.

     

    You seem to have erased the BC partition using Disk Utility, which is not a good idea. Do not mix BC Assistant and Disk Utility.

     

    Run the following two procedures after each failed attempt.

     

    Reset the System Management Controller (SMC) on your Mac - Apple Support

    How to Reset NVRAM on your Mac - Apple Support

     

    In the current state, the disk1s4-disk1s7 need to be merged into a single FAT32 partition, if you want to re-use it for BC/Windows.

  • by Bassermann One,

    Bassermann One Bassermann One Aug 22, 2016 12:29 PM in response to Loner T
    Level 1 (4 points)
    Windows Software
    Aug 22, 2016 12:29 PM in response to Loner T

    thank you for you quick response!

     

    after 12 hours of tryin to fix this, my brain is a bit melted - so i try to get a to-do list right:

     

    1. i try to merge the disks you told me (how?)

    2. i try to get boot camp to grey out the 3rd button?!

    3. try to install it when 1 and 2 worked

     

    for me it would help much to understand why boot camp greys out the 3rd point and why windows cant be installed after i partition a disk into ntfs. the 3rd point was already greyed out before i deleted the bc partition... (i dunno exaclty if this is related)

     

    also sorry for my english

  • by Loner T,Helpful

    Loner T Loner T Aug 22, 2016 10:08 PM in response to Bassermann One
    Level 7 (23,663 points)
    Safari
    Aug 22, 2016 10:08 PM in response to Bassermann One

    Bassermann One wrote:

     

     

    1. i try to merge the disks you told me (how?)

    Merge partitions after converting them to HFS+. FAT partitions cannot be merged.

        

         diskutil eraseVolume jhfs+ PT1 disk1s4

         diskutil eraseVolume jhfs+ PT2 disk1s5

         diskutil eraseVolume jhfs+ PT3 disk1s6

         diskutil mergePartitions jhfs+ BCMP disk1s4 disk1s7

         diskutil eraseVolume fat32 BOOTCAMP disk1s4

     

    Please post the output of

         sudo fdisk /dev/disk1

     

    2. i try to get boot camp to grey out the 3rd button?!

    Is this the Install/Remove button in BC Assistant?

     

     

    for me it would help much to understand why boot camp greys out the 3rd point and why windows cant be installed after i partition a disk into ntfs. the 3rd point was already greyed out before i deleted the bc partition... (i dunno exaclty if this is related)

    Are you using the Windows Installer to format the partition to NTFS, or is it a different tool?

  • by Bassermann One,

    Bassermann One Bassermann One Aug 22, 2016 10:10 PM in response to Loner T
    Level 1 (4 points)
    Windows Software
    Aug 22, 2016 10:10 PM in response to Loner T

    thanks again for your help and time!

     

    output:

    Disk: /dev/disk1 geometry: 121601/255/63 [1953525168 sectors]

    Signature: 0xAA55

             Starting       Ending

    #: id  cyl  hd sec -  cyl  hd sec [     start -       size]

    ------------------------------------------------------------------------

    1: EE 1023 254  63 - 1023 254  63 [         1 -     409639] <Unknown ID>

    2: AC 1023 254  63 - 1023 254  63 [    409640 -  945052608] <Unknown ID>

    3: AB 1023 254  63 - 1023 254  63 [ 945462248 -    1269536] Darwin Boot

    4: 0B 1023 254  63 - 1023 254  63 [ 946733056 - 1006529928] Win95 FAT-32

  • by Loner T,

    Loner T Loner T Aug 23, 2016 4:12 AM in response to Bassermann One
    Level 7 (23,663 points)
    Safari
    Aug 23, 2016 4:12 AM in response to Bassermann One

    Please post the output of diskutil list.