Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

User profile for user: Dragonfly Group
Dragonfly Group Author
User level: Level 1
0 points

Bootcamp Failed - El Captain

Hi, I have an iMac (2015) and I am running the latest update of El Capitan. I have downloaded the windows 10 ISO and used bootcamp to try to dual boot. When it reloaded it gave me a blue screen and said there was files missing and then hung. I booted back into Mac and windows has totally disappeared. I have tried to remove the partition to start over but it just says that the start up disk cannot be partitioned or restored to a single partition, and thats it - it won't do anything. I have been to the disk utility and it is formatted to the OS Extended (journaled) volume which is says it must be but it is totally empty. So now I can't restore the 100gb partition but it doesn't have windows on it and i can't install windows as Mac won't recognise .exe files.


Can someone please help me to get it back to the start and tell me where I went wrong? Thanks for any help, Lisa

Posted on Feb 5, 2016 8:38 AM

Reply
9 replies
User profile for user: Loner T
Loner T
User level: Level 9
59,471 points

Feb 5, 2016 8:45 AM in response to Dragonfly Group

Can you post the output of the following OSX Terminal commands?


diskutil list

diskutil cs list

sudo gpt -vv -r show /dev/disk0

sudo fdisk /dev/disk0


The "sudo" commands will prompt for your password, and it will not be echoed back. You may also see a warning about improper use of "sudo" and potential data loss due to "abuse" of the command.

Reply
User profile for user: Dragonfly Group
Dragonfly Group Author
User level: Level 1
0 points

Feb 5, 2016 9:28 AM in response to Loner T

Thanks for trying to help 🙂


Last login: Fri Feb 5 17:23:04 on console

Discovers-iMac:~ DiscoverDragonfly$ diskutil list

/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_CoreStorage Macintosh HD 898.4 GB disk0s2

3: Apple_Boot Recovery HD 650.0 MB disk0s3

4: Apple_HFS BOOTCAMP 100.9 GB disk0s4

/dev/disk1 (internal, virtual):

#: TYPE NAME SIZE IDENTIFIER

0: Apple_HFS Macintosh HD +898.0 GB disk1

Logical Volume on disk0s2

746DE212-4B99-4943-B2BB-05B7B6EDA1BE

Unencrypted

/dev/disk2 (external, physical):

#: TYPE NAME SIZE IDENTIFIER

0: FDisk_partition_scheme *134.2 GB disk2

1: DOS_FAT_32 DISK_IMG 134.2 GB disk2s1

/dev/disk3 (external, physical):

#: TYPE NAME SIZE IDENTIFIER

0: FDisk_partition_scheme *8.0 GB disk3

1: DOS_FAT_32 NO NAME 8.0 GB disk3s1

Discovers-iMac:~ DiscoverDragonfly$ diskutil cs list

CoreStorage logical volume groups (1 found)

|

+-- Logical Volume Group 31E95C33-8203-4D76-9796-4870227001FA

=========================================================

Name: Macintosh HD

Status: Online

Size: 898359193600 B (898.4 GB)

Free Space: 5943296 B (5.9 MB)

|

+-< Physical Volume 433382A8-3E21-45B9-BA86-9666BA8C2C14

| ----------------------------------------------------

| Index: 0

| Disk: disk0s2

| Status: Online

| Size: 898359193600 B (898.4 GB)

|

+-> Logical Volume Family 32E002B1-2848-4327-BD9E-84BD2A26F737

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

Encryption Type: None

|

+-> Logical Volume 746DE212-4B99-4943-B2BB-05B7B6EDA1BE

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

Disk: disk1

Status: Online

Size (Total): 898000924672 B (898.0 GB)

Revertible: No

LV Name: Macintosh HD

Volume Name: Macintosh HD

Content Hint: Apple_HFS

Discovers-iMac:~ DiscoverDragonfly$ sudo gpt -vv -r show /dev/disk0

Password:

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

gpt show: /dev/disk0: PMBR 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 PMBR

1 1 Pri GPT header

2 32 Pri GPT table

34 6

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

409640 1754607800 2 GPT part - 53746F72-6167-11AA-AA11-00306543ECAC

1755017440 1269536 3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

1756286976 196976008 4 GPT part - 48465300-0000-11AA-AA11-00306543ECAC

1953262984 262151

1953525135 32 Sec GPT table

1953525167 1 Sec GPT header

Discovers-iMac:~ DiscoverDragonfly$

Reply
User profile for user: Loner T
Loner T
User level: Level 9
59,471 points

Feb 5, 2016 10:18 AM in response to Dragonfly Group

1. Disconnect all external storage before you attempt Windows installation. It should stay disconnected till Windows is fully installed and user account has been created.

2. Your Bootcamp partition should be FAT32, not HFS. Was it manually converted to HFS via Disk Utility?

3. Please run the following two procedures before each attempt.

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

How to Reset NVRAM on your Mac - Apple Support

4. You should be able to erase the current HFS and convert it to FAT32 and reuse it.

diskutil eraseVolume fat32 BOOTCAMP disk0s4

Reply
User profile for user: Dragonfly Group
Dragonfly Group Author
User level: Level 1
0 points

Feb 5, 2016 10:21 AM in response to Loner T

That got my drive back into one - thanks 🙂


Any ideas what went wrong? I was trying to install windows from a USB stick but I've seen somewhere else that this doesn't work? I have no cd drive so there is no other way for me to do it. The USB drive shows as a physical drive but not a windows installation disk - have I done this wrong?


Thanks for all your help

Reply
User profile for user: Dragonfly Group
Dragonfly Group Author
User level: Level 1
0 points

Feb 6, 2016 4:48 AM in response to Loner T

Hi, its done it again - I got it into windows and it was working then it chucked up an error, blue screened and wouldn't do anything. Ive fought it and done a repair disk on the disk utility thing to get it back into mac but now it won't remove the partition again.


I done the thing you asked yesterday so you can see what it says - apparently I now have 6 drives!!!


Last login: Sat Feb 6 12:42:32 on console

Discovers-iMac:~ DiscoverDragonfly$ diskutil list

/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_CoreStorage Macintosh HD 870.4 GB disk0s2

3: Apple_Boot Recovery HD 650.0 MB disk0s3

4: Microsoft Basic Data BOOTCAMP 8.0 GB disk0s4

5: Microsoft Reserved 16.8 MB disk0s5

6: Microsoft Basic Data BOOTCAMP 120.8 GB disk0s6

/dev/disk1 (internal, virtual):

#: TYPE NAME SIZE IDENTIFIER

0: Apple_HFS Macintosh HD +870.0 GB disk1

Logical Volume on disk0s2

746DE212-4B99-4943-B2BB-05B7B6EDA1BE

Unencrypted

Discovers-iMac:~ DiscoverDragonfly$ diskutil cs list

CoreStorage logical volume groups (1 found)

|

+-- Logical Volume Group 31E95C33-8203-4D76-9796-4870227001FA

=========================================================

Name: Macintosh HD

Status: Online

Size: 870358265856 B (870.4 GB)

Free Space: 5943296 B (5.9 MB)

|

+-< Physical Volume 433382A8-3E21-45B9-BA86-9666BA8C2C14

| ----------------------------------------------------

| Index: 0

| Disk: disk0s2

| Status: Online

| Size: 870358265856 B (870.4 GB)

|

+-> Logical Volume Family 32E002B1-2848-4327-BD9E-84BD2A26F737

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

Encryption Type: None

|

+-> Logical Volume 746DE212-4B99-4943-B2BB-05B7B6EDA1BE

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

Disk: disk1

Status: Online

Size (Total): 869999996928 B (870.0 GB)

Revertible: No

LV Name: Macintosh HD

Volume Name: Macintosh HD

Content Hint: Apple_HFS

Discovers-iMac:~ DiscoverDragonfly$ sudo gpt -vv -r show /dev/disk0

Password:

Sorry, try again.

Password:

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

gpt show: /dev/disk0: PMBR 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 PMBR

1 1 Pri GPT header

2 32 Pri GPT table

34 6

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

409640 1699918488 2 GPT part - 53746F72-6167-11AA-AA11-00306543ECAC

1700328128 1269536 3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

1701597664 1568

1701599232 15622144 4 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

1717221376 32768 5 GPT part - E3C9E316-0B5C-4DB8-817D-F92DF00215AE

1717254144 236008840 6 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

1953262984 262151

1953525135 32 Sec GPT table

1953525167 1 Sec GPT header

Discovers-iMac:~ DiscoverDragonfly$

Reply
User profile for user: Loner T
Loner T
User level: Level 9
59,471 points

Feb 6, 2016 5:17 AM in response to Dragonfly Group

From OS X Terminal,


diskutil eraseVolume jhfs+ BC1 disk0s4

diskutil eraseVolume jhfs+ BC2 disk0s5

diskutil eraseVolume jhfs+ BC3 disk0s6

diskutil mergePartitions jhfs+ BC disk0s4 disk0s6

diskutil eraseVolume fat32 BOOTCAMP disk0s4


This converts individual parts into HFS parts, merges them, and reformats the merged disk0s4 back to FAT32.


Please do no connect any external storage during installation of Windows, and run SMC/NVRAM reset.

Reply

Bootcamp Failed - El Captain

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple ID.
Learn more Sign up