Unable to boot into OSX, Mac startup disk renamed and not mounted anymore

-bash-3.2# diskutil list

/dev/disk0 (internal):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme 251.0 GB disk0

1: EFI EFI 314.6 MB disk0s1

2: Apple_APFS 185.0 GB disk0s2

3: Microsoft Basic Data BOOTCAMP 65.7 GB disk0s3

/dev/disk1 (disk image):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme +2.1 GB disk1

1: Apple_HFS OS X Base System 2.0 GB disk1s1

/dev/disk2 (disk image):

#: TYPE NAME SIZE IDENTIFIER

0: untitled +5.2 MB disk2

/dev/disk3 (external, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *4.0 TB disk3

1: EFI EFI 209.7 MB disk3s1

2: Microsoft Basic Data G-DRIVE 4.0 TB disk3s2

/dev/disk4 (disk image):

#: TYPE NAME SIZE IDENTIFIER

0: untitled +524.3 KB disk4

/dev/disk5 (disk image):

#: TYPE NAME SIZE IDENTIFIER

0: untitled +524.3 KB disk5

/dev/disk6 (disk image):

#: TYPE NAME SIZE IDENTIFIER

0: untitled +524.3 KB disk6

/dev/disk7 (disk image):

#: TYPE NAME SIZE IDENTIFIER

0: untitled +2.1 MB disk7

/dev/disk8 (disk image):

#: TYPE NAME SIZE IDENTIFIER

0: untitled +524.3 KB disk8

/dev/disk9 (disk image):

#: TYPE NAME SIZE IDENTIFIER

0: untitled +524.3 KB disk9

/dev/disk10 (disk image):

#: TYPE NAME SIZE IDENTIFIER

0: untitled +12.6 MB disk10

/dev/disk11 (disk image):

#: TYPE NAME SIZE IDENTIFIER

0: untitled +4.2 MB disk11

/dev/disk12 (disk image):

#: TYPE NAME SIZE IDENTIFIER

0: untitled +1.0 MB disk12

/dev/disk13 (disk image):

#: TYPE NAME SIZE IDENTIFIER

0: untitled +2.1 MB disk13

/dev/disk14 (disk image):

#: TYPE NAME SIZE IDENTIFIER

0: untitled +524.3 KB disk14

/dev/disk15 (disk image):

#: TYPE NAME SIZE IDENTIFIER

0: untitled +524.3 KB disk15

/dev/disk16 (disk image):

#: TYPE NAME SIZE IDENTIFIER

0: untitled +1.0 MB disk16

/dev/disk17 (disk image):

#: TYPE NAME SIZE IDENTIFIER

0: untitled +6.3 MB disk17

/dev/disk18 (disk image):

#: TYPE NAME SIZE IDENTIFIER

0: untitled +6.3 MB disk18

/dev/disk19 (disk image):

#: TYPE NAME SIZE IDENTIFIER

0: untitled +524.3 KB disk19

/dev/disk20 (disk image):

#: TYPE NAME SIZE IDENTIFIER

0: untitled +2.1 MB disk20

-bash-3.2#

I’m willing to try anything. Can you tell me the steps? I really do appreciate your help in this...there is just way too much work on that disk for me to just forfeit. I am indebted to you...

But I have to ask you — have you seen this issue before? And it’s resolved the same way?

Nvm got it

Last login: Sat Nov 17 14:45:24 on console

Garys-MacBook-Pro:~ portable-osx$

Garys-MacBook-Pro:~ portable-osx$ diskutil output

diskutil: did not recognize verb "output"; type "diskutil" for a list

Garys-MacBook-Pro:~ portable-osx$ diskutil info sudo dd if=/dev/rdisk0s2 count=5 2>/dev/null | hexdump -C

00000000 55 73 61 67 65 3a 20 20 64 69 73 6b 75 74 69 6c |Usage: diskutil|

00000010 20 69 6e 66 6f 5b 72 6d 61 74 69 6f 6e 5d 20 5b | info[rmation] [|

00000020 2d 70 6c 69 73 74 5d 0a 20 20 20 20 20 20 20 20 |-plist]. |

00000030 4d 6f 75 6e 74 50 6f 69 6e 74 7c 44 69 73 6b 49 |MountPoint|DiskI|

00000040 64 65 6e 74 69 66 69 65 72 7c 44 65 76 69 63 65 |dentifier|Device|

00000050 4e 6f 64 65 7c 55 55 49 44 20 7c 20 2d 61 6c 6c |Node|UUID | -all|

00000060 0a 44 69 73 70 6c 61 79 20 64 65 74 61 69 6c 65 |.Display detaile|

00000070 64 20 69 6e 66 6f 72 6d 61 74 69 6f 6e 20 61 62 |d information ab|

00000080 6f 75 74 20 61 20 64 69 73 6b 20 6f 72 20 70 61 |out a disk or pa|

00000090 72 74 69 74 69 6f 6e 2e 0a 52 6f 6f 74 20 6f 72 |rtition..Root or|

000000a0 20 61 64 6d 69 6e 69 73 74 72 61 74 6f 72 20 61 | administrator a|

000000b0 63 63 65 73 73 20 69 73 20 6e 6f 74 20 72 65 71 |ccess is not req|

000000c0 75 69 72 65 64 2e 0a |uired..|

000000c7

Garys-MacBook-Pro:~ portable-osx$

My previous reply is what I got (it'll line up correctly on if you're viewing this page on desktop mode)

Last login: Sat Nov 17 14:45:24 on console

Garys-MacBook-Pro:~ portable-osx$

Garys-MacBook-Pro:~ portable-osx$ diskutil output

diskutil: did not recognize verb "output"; type "diskutil" for a list

Garys-MacBook-Pro:~ portable-osx$ diskutil info sudo dd if=/dev/rdisk0s2 count=5 2>/dev/null | hexdump -C

00000000 55 73 61 67 65 3a 20 20 64 69 73 6b 75 74 69 6c |Usage: diskutil|

00000010 20 69 6e 66 6f 5b 72 6d 61 74 69 6f 6e 5d 20 5b | info[rmation] [|

00000020 2d 70 6c 69 73 74 5d 0a 20 20 20 20 20 20 20 20 |-plist]. |

00000030 4d 6f 75 6e 74 50 6f 69 6e 74 7c 44 69 73 6b 49 |MountPoint|DiskI|

00000040 64 65 6e 74 69 66 69 65 72 7c 44 65 76 69 63 65 |dentifier|Device|

00000050 4e 6f 64 65 7c 55 55 49 44 20 7c 20 2d 61 6c 6c |Node|UUID | -all|

00000060 0a 44 69 73 70 6c 61 79 20 64 65 74 61 69 6c 65 |.Display detaile|

00000070 64 20 69 6e 66 6f 72 6d 61 74 69 6f 6e 20 61 62 |d information ab|

00000080 6f 75 74 20 61 20 64 69 73 6b 20 6f 72 20 70 61 |out a disk or pa|

00000090 72 74 69 74 69 6f 6e 2e 0a 52 6f 6f 74 20 6f 72 |rtition..Root or|

000000a0 20 61 64 6d 69 6e 69 73 74 72 61 74 6f 72 20 61 | administrator a|

000000b0 63 63 65 73 73 20 69 73 20 6e 6f 74 20 72 65 71 |ccess is not req|

000000c0 75 69 72 65 64 2e 0a |uired..|

000000c7

Garys-MacBook-Pro:~ portable-osx$

I don't get a result when I type in just the command. It asks for my password and when I type it in, it just goes back to this:

Last login: Sun Nov 18 15:13:30 on ttys000

Garys-MacBook-Pro:~ portable-osx$ sudo dd if=/dev/rdisk0s2 count=5 2>/dev/null | hexdump -C

Password:

Garys-MacBook-Pro:~ portable-osx$

Yes, it does. Oh boy this doesn't look good.....

Last login: Sun Nov 18 15:13:30 on ttys000

Garys-MacBook-Pro:~ portable-osx$ sudo dd if=/dev/rdisk0s2 count=5 2>/dev/null | hexdump -C

Password:

Garys-MacBook-Pro:~ portable-osx$

[Restored Nov 18, 2018 at 4:10:06 PM]

Last login: Sun Nov 18 16:10:03 on console

Garys-MacBook-Pro:~ portable-osx$ diskutil list

/dev/disk0 (internal):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme 251.0 GB disk0

1: EFI EFI 314.6 MB disk0s1

2: Apple_APFS 185.0 GB disk0s2

3: Microsoft Basic Data BOOTCAMP 65.7 GB disk0s3

/dev/disk1 (external, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *30.8 GB disk1

1: EFI EFI 209.7 MB disk1s1

2: Apple_HFS OS X USB 29.9 GB disk1s2

3: Apple_Boot Recovery HD 650.0 MB disk1s3

/dev/disk2 (external, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *4.0 TB disk2

1: EFI EFI 209.7 MB disk2s1

2: Microsoft Basic Data G-DRIVE 4.0 TB disk2s2

Disconnected external G drive. USB is actually running high Sierra (internet recovery only downloaded and installed High Sierra). These are the results from running:

diskutil apfs list

sudo fsck_apfs -n -l /dev/rdisk0s2

Garys-MacBook-Pro:~ portable-osx$ diskutil apfs list

No APFS Containers found

Garys-MacBook-Pro:~ portable-osx$ sudo fsck_apfs -n -l /dev/rdisk0s2

0000: 323f cde9 3159 cf61 0000 0000 0000 0000 |2...1Y.a........|

0010: 1040 35b7 01e0 ffff 0000 0000 0000 0000 |..5.............|

0020: 0000 0000 0000 0000 0000 0000 0000 0000 |................|

. . .

0ff0: 0000 0000 0000 0000 0000 0000 0000 0000 |................|

error: Device does not contain a valid APFS container.

Garys-MacBook-Pro:~ portable-osx$

Okay — stand by for results! Installing Mojave now on a second USB. When it’s done, I just attempt to run First Aid/repair from Mojave?

Oh and btw, in the spirit of Black Friday — here’s an incredible deal for USB-C flash drives, the ones I’ve been using to install bootables (they run flawlessly):

https://bit.ly/2PGgQXB

Amazon, BHphoto, etc. have it all around the same range in price too. I got Best Buy to price match it — twice.

So, I'm getting the same level of access as High Sierra...the only difference seems to be that I can view more with "Verify Disk" of the effected disk (disk0s2), although most of may folders are empty, like Documents, Downloads, etc. Applications looks to be reset to a fresh install of OS X.

When I try to run First Aid, it immediately gives me the msg:

First Aid process has failed. If possible back up the data on this volume. Click Done to continue.

Details:

Running First Aid on “” (disk0s2)

An internal error has occurred.

Operation failed…

When I try to run the command sudo dd if=/dev/rdisk0s2 count=5 2>/dev/null | hexdump -C,

I get the same result as last time:

Last login: Tue Nov 20 21:27:29 on ttys000

Garys-MacBook-Pro:~ garymei$ sudo dd if=/dev/rdisk0s2 count=5 2>/dev/null | hexdump -C

Password:

Garys-MacBook-Pro:~ garymei$

So... am I screwed?

Is this what you’re referring to (left hand side)?

Ugh...I’m booting using an external drive and tried to run first aid on the effected drive. Still the same result. Was there a different approach than this?