Accidently deleted Bootcamp from DU and now can't start Mac OS

Ok no problem. I will go and buy a new external drive as I need one anyway.

I did manage to copy the user folder to an external hard drive. It was about 330gb, so I am guessing that has most of the files I care about from the Macintosh HD

Last login: Mon Nov  2 18:56:58 on console

cams-MacBook-Pro:~ cam$ diskutil list

/dev/disk0 (internal, physical):

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:      GUID_partition_scheme                        *500.3 GB   disk0

   1:                        EFI EFI                     209.7 MB   disk0s1

   2:          Apple_CoreStorage Macintosh HD            404.4 GB   disk0s2

   3:                  Apple_HFS                         650.0 MB   disk0s3

   4:                  Apple_HFS BOOTCAMP                94.9 GB    disk0s4

/dev/disk1 (internal, virtual):

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:                  Apple_HFS Macintosh HD           +404.0 GB   disk1

                                 Logical Volume on disk0s2

                                 A273065A-5AA5-43F5-B5E6-EF8D43F51789

                                 Unencrypted

/dev/disk2 (external, physical):

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:      GUID_partition_scheme                        *2.0 TB     disk2

   1:                        EFI EFI                     209.7 MB   disk2s1

   2:                  Apple_HFS UNTITLED                2.0 TB     disk2s2

   3:                 Apple_Boot Recovery HD             650.0 MB   disk2s3

cams-MacBook-Pro:~ cam$ 

Done, here are the results

Started partition map repair on disk0

Checking prerequisites

Checking the partition list

Adjusting partition map to fit whole disk as required

Checking for an EFI system partition

Checking the EFI system partition's size

Checking the EFI system partition's file system

Checking the EFI system partition's folder content

Checking all HFS data partition loader spaces

Checking booter partitions

Reviewing boot support loaders

Checking Core Storage Physical Volume partitions

Verifying storage system

Checking volume

disk0s2: Scan for Volume Headers

disk0s2: Scan for Disk Labels

Invalid Disk Label @ 404358651904: cksum mismatch

Logical Volume Group BB7C5DB3-39E2-4946-978C-73BD134025DF on 1 device

disk0s2: Scan for Metadata Volume

Logical Volume Group has a 24 MB Metadata Volume with double redundancy

Start scanning metadata for a valid checkpoint

Load and verify Segment Headers

Load and verify Checkpoint Payload

Load and verify Transaction Segment

Incorporate 0 newer non-checkpoint transactions

Load and verify Virtual Address Table

Load and verify Segment Usage Table

Load and verify Metadata Superblock

Load and verify Logical Volumes B-Trees

Logical Volume Group contains 1 Logical Volume

Load and verify E90CD8B5-CE15-406E-B625-2E9DD50513CD

Load and verify A273065A-5AA5-43F5-B5E6-EF8D43F51789

Load and verify Freespace Summary

Load and verify Block Accounting

Load and verify Live Virtual Addresses

Newest transaction commit checkpoint is valid

Load and verify Segment Cleaning

The volume BB7C5DB3-39E2-4946-978C-73BD134025DF appears to be OK

Storage system check exit code is 0

Repairing storage system

The volume disk0s2 cannot be repaired when it is in use

Checking volume

disk0s2: Scan for Volume Headers

disk0s2: Scan for Disk Labels

Invalid Disk Label @ 404358651904: cksum mismatch

Logical Volume Group BB7C5DB3-39E2-4946-978C-73BD134025DF on 1 device

disk0s2: Scan for Metadata Volume

Logical Volume Group has a 24 MB Metadata Volume with double redundancy

Start scanning metadata for a valid checkpoint

Load and verify Segment Headers

Load and verify Checkpoint Payload

Load and verify Transaction Segment

Incorporate 0 newer non-checkpoint transactions

Load and verify Virtual Address Table

Load and verify Segment Usage Table

Load and verify Metadata Superblock

Load and verify Logical Volumes B-Trees

Logical Volume Group contains 1 Logical Volume

Load and verify E90CD8B5-CE15-406E-B625-2E9DD50513CD

Load and verify A273065A-5AA5-43F5-B5E6-EF8D43F51789

Load and verify Freespace Summary

Load and verify Block Accounting

Load and verify Live Virtual Addresses

Newest transaction commit checkpoint is valid

Load and verify Segment Cleaning

The volume BB7C5DB3-39E2-4946-978C-73BD134025DF appears to be OK

Storage system check exit code is 0

Updating Windows boot.ini files as required

The partition map appears to be OK

Finished partition map repair on disk0

cams-MacBook-Pro:~ cam$ 

I am, yes. I already copied a lot of them them over to another hard drive as a backup and they are still accessible on there.

Although I don't have access to one of the users folders (I don't need anything of this one but thought it was odd I don't have access)

Here are the results. I rebooted again after this and I still only had the same two options

cams-MacBook-Pro:~ cam$ sudo fsck_hfs -f -y /dev/rdisk1

Password:

** /dev/rdisk1

   Executing fsck_hfs (version hfs-366.70.1).

** Checking Journaled HFS Plus volume.

   The volume name is Macintosh HD

** Checking extents overflow file.

** Checking catalog file.

** Checking multi-linked files.

** Checking catalog hierarchy.

** Checking extended attributes file.

** Checking multi-linked directories.

** Checking volume bitmap.

** Checking volume information.

** Trimming unused blocks.

** The volume Macintosh HD appears to be OK.

cams-MacBook-Pro:~ cam$ 

Thanks a lot, that worked perfectly! Everything is back as it was and works great.

I did try to make the partition one again. I got this error in BC Assistant

Looked at doing it in DU and got this error too

Oh ok! I installed GPT Fdisk

Here are the the results from diskutil list

Homes-MacBook-Pro:~ home$ diskutil list

/dev/disk0 (internal, physical):

  #:            TYPE NAME          SIZE    IDENTIFIER

  0:   GUID_partition_scheme            *500.3 GB  disk0

  1:            EFI EFI           209.7 MB  disk0s1

  2:         Apple_HFS Macintosh HD      404.4 GB  disk0s2

  3:         Apple_HFS             650.0 MB  disk0s3

  4:         Apple_HFS BOOTCAMP        94.4 GB  disk0s4

  5:         Apple_Boot Recovery HD       650.0 MB  disk0s5

Thanks!

Here are the results from diskutil repairDisk disk0

Homes-MacBook-Pro:~ home$ diskutil repairDisk disk0

Repairing the partition map might erase disk0s1, proceed? (y/N) y

Started partition map repair on disk0

Checking prerequisites

Checking the partition list

Adjusting partition map to fit whole disk as required

Checking for an EFI system partition

Checking the EFI system partition's size

Checking the EFI system partition's file system

Checking the EFI system partition's folder content

Checking all HFS data partition loader spaces

Preparing to create trailing loader space by shrinking the volume "Macintosh HD" on disk0s2

Creating loader space, part 1 of 3: Verifying the file system

Creating loader space, part 2 of 3: Shrinking the file system from 404,371,238,912 to 404,237,021,184 bytes so that this partition can be smaller

Creating loader space, part 3 of 3: Shrinking the partition in the partition map to open up loader space

Checking booter partitions

Checking booter partition disk0s5

Repairing file system

Checking Journaled HFS Plus volume

Checking extents overflow file

Checking catalog file

Checking multi-linked files

Checking catalog hierarchy

Checking extended attributes file

Checking volume bitmap

Checking volume information

Trimming unused blocks

The volume Recovery HD appears to be OK

File system check exit code is 0

Updating boot support partitions for the volume as required

Reviewing boot support loaders

Checking Core Storage Physical Volume partitions

Updating Windows boot.ini files as required

The partition map has been repaired

Finished partition map repair on disk0

Homes-MacBook-Pro:~ home$ 

Homes-MacBook-Pro:~ home$ diskutil list

/dev/disk0 (internal, physical):

  #:            TYPE NAME          SIZE    IDENTIFIER

  0:   GUID_partition_scheme            *500.3 GB  disk0

  1:            EFI EFI           209.7 MB  disk0s1

  2:         Apple_HFS Macintosh HD      404.2 GB  disk0s2

  3:         Apple_HFS             650.0 MB  disk0s3

  4:         Apple_HFS BOOTCAMP        94.4 GB  disk0s4

  5:         Apple_Boot Recovery HD       650.0 MB  disk0s5

I also get the greyed out option for a reinstall on my main Macintosh HD disk when trying

Do you mean install it on a external hard drive or the bootcamp partition?

I don’t

I actually just got Sierra installed to a hard drive (to the same version my Macintosh HD had). USB 3 did make a wolrd of difference.