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magicmermaid

macrumors newbie
Feb 1, 2018
2
0
California
I see you figured it out, but yeah... this part is the key as that erases the whole physical disk back to one volume and reclaims the Bootcamp space. :)

@Weaselboy Hi, I need your help too!!! :) I don't have time machine setup so I need to do this hopefully without having to erase my HD. I have a Mid 2010 Mac Pro running on High Sierra 10.13.2 I was trying to install Windows 7 on a virtual drive with Parallels but it wasn't working so I was thinking that maybe I needed to create a partition. So I used Disk Utility and create a 100GB Volume...it shrunk the Mac HD by 100GB.

For some reason, I still couldn't get parallels to work so I decided shortly thereafter to delete it thinking that I would have my full volume back but no dice. It just disappeared and I don't know how to get it back. Ugh. appreciate any help you can give. I read in forums to use "diskutil apfs list" in terminal and I got the following as you can see below:
/dev/disk0 (internal, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *640.1 GB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_HFS Mac HD 539.9 GB disk0s2

3: Apple_Boot Recovery HD 100.0 GB disk0s3


I GOT MORE INFORMATION FROM TERMINAL ...SEE BELOW:

Last login: Thu Feb 1 20:40:48 on ttys000

zNewEdit:~ diskutil list

/dev/disk0 (internal, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *640.1 GB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_HFS Mac HD 539.9 GB disk0s2

3: Apple_Boot Recovery HD 100.0 GB 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_HFS 1TB HD 999.9 GB disk1s2
 
Last edited:

Weaselboy

Moderator
Staff member
Jan 23, 2005
34,477
16,187
California
Do you have an external disk you can use to make a Time Machine backup, then use that to boot to and erase the drive and restore?
 

magicmermaid

macrumors newbie
Feb 1, 2018
2
0
California
Do you have an external disk you can use to make a Time Machine backup, then use that to boot to and erase the drive and restore?
@Weaselboy
Hi Weaselboy,
Thank you SO much for responding! I am new to Mac computers as I am historically a PC girl. Why has Apple not resolved this issue?o_O..it's seem something simple that we should be able to do without having to go through all of this. I don't have an external drive available but I have another internal drive. Can I use that one?
Thanks again for taking the time. :)
 

Weaselboy

Moderator
Staff member
Jan 23, 2005
34,477
16,187
California
I don't have an external drive available but I have another internal drive. Can I use that one?
That is even easier. Just erase the second disk and use the trial version of Carbon Copy Cloner to clone the disk over. Then option key boot to the second disk and erase the first disk and clone back.

When you erase the disk make sure you select the drive itself at the top like in my screenshot.

Screen Shot 2018-02-05 at 6.49.38 AM.png Screen Shot 2018-02-05 at 6.49.32 AM.png
 

TheDankHank

macrumors newbie
Feb 10, 2018
3
1
I was looking through the discussion and Weaselboy is so helpful wow. Was wondering if you could help with my problem as I deleted my bootcamp partition and idk how to get my space back.
[doublepost=1518318205][/doublepost]
I was looking through the discussion and Weaselboy is so helpful wow. Was wondering if you could help with my problem as I deleted my bootcamp partition and idk how to get my space back.
I only have one partition so I'm not sure how to get it back as i cannot increase the circle.
 

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john_oz

macrumors newbie
Feb 11, 2018
8
2
Please run each of these two commands in Terminal then tell me the output of each.

Code:
diskutil list

diskutil cs list



hi i have the similar problem with the magicmermaid .

To talk about my problem, bought a new Late 2017 Imac 27 couple of weeks ago OS : High Sierra(10.12.6), I partitioned with a Bootcamp Windows 10, size 183 GB then I got another partition to set up linux there size 50 gb. I failed to setup the third partition (linux partition took so long I quit the partition halfway) .
After that I decided to unpartition the hdd to a singular Mac OS original partition (1 TB size). I removed the Bootcamp windows it was deleted but now my physical volume shows only 363 GBs.

How can I get the original state of my iMac ?
Thank you
 

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Weaselboy

Moderator
Staff member
Jan 23, 2005
34,477
16,187
California
hi i have the similar problem with the magicmermaid .
Do you have an external USB disk you can use to make a Time Machine backup? If so, use that to make a full backup then let me know and I'll try and walk you through what to do next.
 

TheDankHank

macrumors newbie
Feb 10, 2018
3
1
Do you have an external USB disk you can use to make a Time Machine backup? If so, use that to make a full backup then let me know and I'll try and walk you through what to do next.
When I do
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 381.4 GB disk0s2

3: Apple_Boot Recovery HD 618.6 GB disk0s3


/dev/disk1 (internal):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme 28.0 GB disk1

1: EFI EFI 314.6 MB disk1s1

2: Apple_CoreStorage Macintosh HD 27.6 GB disk1s2

3: Apple_Boot Boot OS X 134.2 MB disk1s3


/dev/disk2 (internal, virtual):

#: TYPE NAME SIZE IDENTIFIER

0: Apple_HFS Macintosh HD +408.0 GB disk2

Logical Volume on disk1s2, disk0s2

DA58B6DF-E8F9-41A1-A1EB-A81CCA1F7467

Unencrypted Fusion Drive


/dev/disk3 (external, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *1.0 TB disk3

1: EFI EFI 209.7 MB disk3s1

2: Apple_HFS WD My Passport 1.0 TB disk3s2
[doublepost=1518371921][/doublepost]
/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 381.4 GB disk0s2

3: Apple_Boot Recovery HD 618.6 GB disk0s3


/dev/disk1 (internal):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme 28.0 GB disk1

1: EFI EFI 314.6 MB disk1s1

2: Apple_CoreStorage Macintosh HD 27.6 GB disk1s2

3: Apple_Boot Boot OS X 134.2 MB disk1s3


/dev/disk2 (internal, virtual):

#: TYPE NAME SIZE IDENTIFIER

0: Apple_HFS Macintosh HD +408.0 GB disk2

Logical Volume on disk1s2, disk0s2

DA58B6DF-E8F9-41A1-A1EB-A81CCA1F7467

Unencrypted Fusion Drive


/dev/disk3 (external, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *1.0 TB disk3

1: EFI EFI 209.7 MB disk3s1

2: Apple_HFS WD My Passport 1.0 TB disk3s2

When I do
diskutil cs list

CoreStorage logical volume groups (1 found)

|

+-- Logical Volume Group F4F409C9-6452-4489-98DB-791CBF34AA75

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

Name: Macintosh HD

Status: Online

Size: 408915664896 B (408.9 GB)

Free Space: 16384 B (16.4 KB)

|

+-< Physical Volume A3F9B3A0-85E6-44A2-8095-D972EE8E39A4

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

| Index: 0

| Disk: disk1s2

| Status: Online

| Size: 27551166464 B (27.6 GB)

|

+-< Physical Volume 92A690B3-ED86-4A92-9808-31E8E5EF7E98

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

| Index: 1

| Disk: disk0s2

| Status: Online

| Size: 381364498432 B (381.4 GB)

|

+-> Logical Volume Family 2B56BD51-B07D-4058-842A-8D6FA80D6945

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

Encryption Type: None

|

+-> Logical Volume DA58B6DF-E8F9-41A1-A1EB-A81CCA1F7467

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

Disk: disk2

Status: Online

Size (Total): 408000004096 B (408.0 GB)

Revertible: No

LV Name: Macintosh HD

Volume Name: Macintosh HD

Content Hint: Apple_HFS

LVG Type: Fusion, Sparse
 

john_oz

macrumors newbie
Feb 11, 2018
8
2
Not much important stuff i got in There. I just need macOS with Win 10 And Fedora(Linux) installed in three seperated partitions. Can you guide me through
[doublepost=1518372943][/doublepost]
Do you have an external USB disk you can use to make a Time Machine backup? If so, use that to make a full backup then let me know and I'll try and walk you through what to do next.

iMac:~ canoz$ 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 650.3 GB disk0s2

3: Apple_Boot Recovery HD 650.0 MB disk0s3


/dev/disk1 (internal):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme 28.0 GB disk1

1: EFI EFI 314.6 MB disk1s1

2: Apple_CoreStorage Macintosh HD 27.6 GB disk1s2

3: Apple_Boot Boot OS X 134.2 MB disk1s3


/dev/disk2 (internal, virtual):

#: TYPE NAME SIZE IDENTIFIER

0: Apple_HFS Macintosh HD +363.9 GB disk2

Logical Volume on disk1s2, disk0s2

95B5FE28-78ED-474A-8330-F04F27E82FE8

Unencrypted Fusion Drive

and diskutil cs list


Cans-iMac:~ canoz$ diskutil cs list

CoreStorage logical volume groups (1 found)

|

+-- Logical Volume Group 33B6EBCE-E6CB-4123-9D26-6FBACC2BF529

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

Name: Macintosh HD

Status: Online

Size: 677863370752 B (677.9 GB)

Free Space: 313072455680 B (313.1 GB)

|

+-< Physical Volume 70C85A74-95E6-4D5D-AD27-04A75A8988A9

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

| Index: 0

| Disk: disk1s2

| Status: Online

| Size: 27551166464 B (27.6 GB)

|

+-< Physical Volume 1A75F6F5-69AC-4422-91DF-B2317AD9972C

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

| Index: 1

| Disk: disk0s2

| Status: Online

| Size: 650312204288 B (650.3 GB)

|

+-> Logical Volume Family C0E6F62F-6728-4788-A9B7-ACA9A5A47804

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

Encryption Type: None

|

+-> Logical Volume 95B5FE28-78ED-474A-8330-F04F27E82FE8

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

Disk: disk2

Status: Online

Size (Total): 363875270656 B (363.9 GB)

Revertible: No

LV Name: Macintosh HD

Volume Name: Macintosh HD

Content Hint: Apple_HFS

LVG Type: Fusion, Sparse

So What is the route now?
 

Weaselboy

Moderator
Staff member
Jan 23, 2005
34,477
16,187
California
When I do

Not much important stuff i got in There. I just need macOS with Win 10 And Fedora(Linux) installed in three seperated partitions. Can you guide me through

You both have the same issue... so I'll walk you through it. I'm assuming here there is no data on the drive you need to keep. If there is, back it up with Time Machine and you can restore it later.

Hold command-option-r at boot. Once you select your wifi you will see a spinning grey globe while the recovery utility downloads. If you are not seeing the spinning globe, you messed up and need to reboot and try again.

After the spinning globe is gone, you will see the recovery screen. From there, click the utilities menu up top and launch Terminal. Type in and enter the command below to wipe the Fusion drive.

Code:
diskutil cs delete "Macintosh HD"

Now erase the two internal drives to Mac OS Extended (Journaled) like I showed here in post #30.

Then follow the steps in post #14 here to rebuild the Fusion drive.

Once that is done, you can either select reinstall OS or restore from Time Machine depending which you want to go with. The Time Machine restore will put the OS and all your data back.
 

john_oz

macrumors newbie
Feb 11, 2018
8
2
You both have the same issue... so I'll walk you through it. I'm assuming here there is no data on the drive you need to keep. If there is, back it up with Time Machine and you can restore it later.

Hold command-option-r at boot. Once you select your wifi you will see a spinning grey globe while the recovery utility downloads. If you are not seeing the spinning globe, you messed up and need to reboot and try again.

After the spinning globe is gone, you will see the recovery screen. From there, click the utilities menu up top and launch Terminal. Type in and enter the command below to wipe the Fusion drive.

Code:
diskutil cs delete "Macintosh HD"

Now erase the two internal drives to Mac OS Extended (Journaled) like I showed here in post #30.

Then follow the steps in post #14 here to rebuild the Fusion drive.

Once that is done, you can either select reinstall OS or restore from Time Machine depending which you want to go with. The Time Machine restore will put the OS and all your data back.


After I deleted and created fusion drive restarted and this ? Happens. Can I download and install Mac OS from usb or internet at the reboot
 

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Weaselboy

Moderator
Staff member
Jan 23, 2005
34,477
16,187
California
After I deleted and created fusion drive restarted and this ? Happens. Can I download and install Mac OS from usb or internet at the reboot
You did not need to reboot. You need to delete, then recreate the Fusion drive like in the steps then reinstall the OS from the Internet recovery screen.
 

john_oz

macrumors newbie
Feb 11, 2018
8
2
You did not need to reboot. You need to delete, then recreate the Fusion drive like in the steps then reinstall the OS from the Internet recovery screen.


I done this (first photo ) then I reboot (internet recovery ) When I try to install Mac OS from internet recovery this happens (second photo ) when I check disk utility ( last photo ) says 677 GBs of fusion drive instead of 1 TB) How can I get 1 tb?
 

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Weaselboy

Moderator
Staff member
Jan 23, 2005
34,477
16,187
California
I done this (first photo ) then I reboot (internet recovery ) When I try to install Mac OS from internet recovery this happens (second photo ) when I check disk utility ( last photo ) says 677 GBs of fusion drive instead of 1 TB) How can I get 1 tb?
You missed a step in my instructions. After you delete the Fusion drive and before you rebuild it, you need to erase each drive like I showed up in post #30. That will erase all the partitions and get it back to one volume filling the entire volume.

Once you are in Internet recovery, you do not need to reboot to do any of this.
 

john_oz

macrumors newbie
Feb 11, 2018
8
2
You missed a step in my instructions. After you delete the Fusion drive and before you rebuild it, you need to erase each drive like I showed up in post #30. That will erase all the partitions and get it back to one volume filling the entire volume.

Once you are in Internet recovery, you do not need to reboot to do any of this.

Done 75% I still couldn’t do the 1TB part. Now installing the Mac OS to my 676 GB Fusion drive...
 

Weaselboy

Moderator
Staff member
Jan 23, 2005
34,477
16,187
California
Done 75% I still couldn’t do the 1TB part. Now installing the Mac OS to my 676 GB Fusion drive...
You are going to be right back where you started. After deleting the Fusion drive you need to erase each drive exactly like shown in my screenshot. Note how I have selected the drive and not the volume below it.

Screen Shot 2018-02-11 at 1.02.52 PM.png
 

john_oz

macrumors newbie
Feb 11, 2018
8
2
Ok I’ll try it next day now in Greece it’s almost bed time. I’ll keep you posted.
Done installed MacOS to my 1TB drive. Now how can I simply setup windows 10 and Fedora to seperate drives. Without messing this up?
 

Weaselboy

Moderator
Staff member
Jan 23, 2005
34,477
16,187
California
Done installed MacOS to my 1TB drive. Now how can I simply setup windows 10 and Fedora to seperate drives. Without messing this up?
You should be able to use Bootcamp to install Windows, but I don't think you are going to be able to get a Fusion drive partitioned like you need for Linux. At least not that I have read anywhere.
 

john_oz

macrumors newbie
Feb 11, 2018
8
2
You should be able to use Bootcamp to install Windows, but I don't think you are going to be able to get a Fusion drive partitioned like you need for Linux. At least not that I have read anywhere.
OK you have been a great help. I appreciate it . Thank you
 
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TheDankHank

macrumors newbie
Feb 10, 2018
3
1
You both have the same issue... so I'll walk you through it. I'm assuming here there is no data on the drive you need to keep. If there is, back it up with Time Machine and you can restore it later.

Hold command-option-r at boot. Once you select your wifi you will see a spinning grey globe while the recovery utility downloads. If you are not seeing the spinning globe, you messed up and need to reboot and try again.

After the spinning globe is gone, you will see the recovery screen. From there, click the utilities menu up top and launch Terminal. Type in and enter the command below to wipe the Fusion drive.

Code:
diskutil cs delete "Macintosh HD"

Now erase the two internal drives to Mac OS Extended (Journaled) like I showed here in post #30.

Then follow the steps in post #14 here to rebuild the Fusion drive.

Once that is done, you can either select reinstall OS or restore from Time Machine depending which you want to go with. The Time Machine restore will put the OS and all your data back.
I've looked at every website, called Apple, and I've been to so many forums asking for help and no one has been as helpful as you. I did what you said and my mac is back to full storage.Thank you so much for your help I cannot thank you enough.
 
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mhessy

macrumors newbie
Feb 12, 2018
5
1
You both have the same issue... so I'll walk you through it. I'm assuming here there is no data on the drive you need to keep. If there is, back it up with Time Machine and you can restore it later.

Hold command-option-r at boot. Once you select your wifi you will see a spinning grey globe while the recovery utility downloads. If you are not seeing the spinning globe, you messed up and need to reboot and try again.

After the spinning globe is gone, you will see the recovery screen. From there, click the utilities menu up top and launch Terminal. Type in and enter the command below to wipe the Fusion drive.

Code:
diskutil cs delete "Macintosh HD"

Now erase the two internal drives to Mac OS Extended (Journaled) like I showed here in post #30.

Then follow the steps in post #14 here to rebuild the Fusion drive.

Once that is done, you can either select reinstall OS or restore from Time Machine depending which you want to go with. The Time Machine restore will put the OS and all your data back.

@Weaselboy Hi Weaselboy...I had the same problem as the other posters and tried following your steps but got stuck when trying to delete "Macintosh HD". I keep getting the error: "Macintosh HD does not appear to be a valid Core Storage Logical Volume Group UUID or name" Any idea where my hang up might be??
 

Weaselboy

Moderator
Staff member
Jan 23, 2005
34,477
16,187
California
@Weaselboy Hi Weaselboy...I had the same problem as the other posters and tried following your steps but got stuck when trying to delete "Macintosh HD". I keep getting the error: "Macintosh HD does not appear to be a valid Core Storage Logical Volume Group UUID or name" Any idea where my hang up might be??
It sounds like that volume is not a Fusion or Core Storage volume, and you can skip that step and just go right to formatting the drive. Make sure you do it like I showed in post #43 there.
 
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