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Level 1

13 points

Lost space after a failed windows10 installation

Hello and good day,

TL;DR is there a simpler fix to regain lost space from a failed windows installation rather than backing up and reinstalling macOS?

Posted on Mar 3, 2018 12:08 PM

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463 13

63 replies

mikelis Author

Level 1

13 points

Mar 4, 2018 4:42 AM in response to Loner T

Ms-iMac:~ m$ diskutil list

/dev/disk0 (internal):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme 121.3 GB disk0

1: EFI EFI 314.6 MB disk0s1

2: Apple_CoreStorage Macintosh HD 120.9 GB disk0s2

3: Apple_Boot Boot OS X 134.2 MB disk0s3

/dev/disk1 (internal, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *2.0 TB disk1

1: EFI EFI 209.7 MB disk1s1

2: Apple_CoreStorage Macintosh HD 1.8 TB disk1s2

3: Apple_Boot Recovery HD 231.2 GB disk1s3

/dev/disk2 (internal, virtual):

#: TYPE NAME SIZE IDENTIFIER

0: Apple_HFS Macintosh FD +1.2 TB disk2

Logical Volume on disk0s2, disk1s2

24CCDA84-B157-4ED3-B9E4-C0E766BBA9AA

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 Untitled 999.8 GB disk3s2

/dev/disk4 (external, physical):

#: TYPE NAME SIZE IDENTIFIER

0: CD_partition_scheme *36.1 MB disk4

Ms-iMac:~ m$ diskutil cs list

CoreStorage logical volume groups (1 found)

+-- Logical Volume Group F5D64E6C-7796-48E9-955E-46429D58A9BF

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

Name: Macintosh HD

Status: Online

Size: 1889854971904 B (1.9 TB)

Free Space: 710889717760 B (710.9 GB)

+-< Physical Volume 41F006BA-3BE8-4829-9052-FCEFA08EA6EF

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

| Index: 0

| Disk: disk0s2

| Status: Online

| Size: 120883990528 B (120.9 GB)

+-< Physical Volume 336A6945-19CB-4000-8402-FF4071278D36

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

| Index: 1

| Disk: disk1s2

| Status: Online

| Size: 1768970981376 B (1.8 TB)

+-> Logical Volume Family DEC88FF7-781B-4876-9112-4499F63BA3F9

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

Encryption Type: None

+-> Logical Volume 24CCDA84-B157-4ED3-B9E4-C0E766BBA9AA

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

Disk: disk2

Status: Online

Size (Total): 1173110521856 B (1.2 TB)

Revertible: No

LV Name: Macintosh FD

Volume Name: Macintosh FD

Content Hint: Apple_HFS

LVG Type: Fusion, Sparse

Ok, I "obtained" another 500g drive for installer and will create a backup on the 1tb one

awaiting instructions

Loner T

Level 9

59,471 points

Mar 4, 2018 4:50 AM in response to mikelis

mikelis wrote:

3: Apple_Boot Recovery HD 231.2 GB disk1s3

This is issue #1.

mikelis wrote:

Free Space: 710889717760 B (710.9 GB)

This is issue #2.

Let the TM backup finish. Once it is finished, disconnect the external TM disk, reboot and hold Command+Opt+R. You should see a spinning globe (and/or you will be asked you wireless password). This is Internet Recovery. This will give you a Recovery Console. Most of the work will need to be done in Utilities -> Terminal.

Do you have another device from which you can post replies, if the iMac is in Internet Recovery?

Loner T

Level 9

59,471 points

Mar 4, 2018 1:25 PM in response to mikelis

mikelis wrote:

got back 1,8tb with the help of Apple support, now trying to get back the rest (partition manager shows full 2,12tb)

If you are in Internet Recovery, click on Utilities -> Terminal, run

diskutil list

Select and Copy (Command+C) the output, quit Terminal, start Safari (Get Help Online), Paste (Command+V) the output as a reply to this discussion. I am not sure what you mean by 1,8Tb vs 2,12 Tb.

mikelis Author

Level 1

13 points

Mar 4, 2018 1:31 PM in response to mikelis

-bash-3.2# diskutil list

/dev/disk0 (internal):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme 121.3 GB disk0

1: EFI EFI 314.6 MB disk0s1

2: Apple_CoreStorage Macintosh HD 120.9 GB disk0s2

3: Apple_Boot Boot OS X 134.2 MB disk0s3

/dev/disk1 (internal, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *2.0 TB disk1

1: EFI EFI 209.7 MB disk1s1

2: Apple_CoreStorage Macintosh HD 1.8 TB disk1s2

3: Apple_Boot Recovery HD 231.2 GB disk1s3

/dev/disk2 (disk image):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme +2.1 GB disk2

1: Apple_HFS OS X Base System 2.0 GB disk2s1

/dev/disk3 (internal, virtual):

#: TYPE NAME SIZE IDENTIFIER

0: Apple_HFS Macintosh FD +1.9 TB disk3

Logical Volume on disk0s2, disk1s2

744C3F5F-E04F-49A7-8805-D69D2F5C4B8C

Unencrypted Fusion Drive

/dev/disk4 (disk image):

#: TYPE NAME SIZE IDENTIFIER

0: untitled +5.2 MB 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 +524.3 KB disk7

/dev/disk8 (disk image):

#: TYPE NAME SIZE IDENTIFIER

0: untitled +2.1 MB 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 +524.3 KB disk10

/dev/disk11 (disk image):

#: TYPE NAME SIZE IDENTIFIER

0: untitled +6.3 MB disk11

/dev/disk12 (disk image):

#: TYPE NAME SIZE IDENTIFIER

0: untitled +2.1 MB disk12

/dev/disk13 (disk image):

#: TYPE NAME SIZE IDENTIFIER

0: untitled +1.0 MB disk13

/dev/disk14 (disk image):

#: TYPE NAME SIZE IDENTIFIER

0: untitled +2.1 MB 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 +524.3 KB disk16

/dev/disk17 (disk image):

#: TYPE NAME SIZE IDENTIFIER

0: untitled +1.0 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

Loner T

Level 9

59,471 points

Mar 4, 2018 1:38 PM in response to mikelis

This is the 'bad' configuration with the 230+ GB Recovery HD. If you have a TM backup, look at the steps for rebuilding the CS LV/LVG that I posted earlier, where you erase the SSD (disk0) and HDD (disk1).

mikelis Author

Level 1

13 points

Mar 4, 2018 2:15 PM in response to Loner T

Thank You alot, I decided I can live with 1,8tb till monday (that is today) when a senior advisor will guide me trough the steps, I wouldn't p$%y out if actually owned the machine, but it's company computer, so I better play it "safe", actually fingers itching to fix this "myself", but I don't want to have to take it to the store myself 🙂

mikelis Author

Level 1

13 points

Mar 4, 2018 2:25 PM in response to Loner T

But my fusion drive isn't split, it's just formatted wrong
I really appreciate Your help and will try the commands if they ditch me, it's just so I could say that I did everything as I was told later on 😀

mikelis Author

Level 1

13 points

Mar 5, 2018 1:20 AM in response to Loner T

So far I've got my 1.8tb and am very happy, thanks for being here with me

Supposed to get a call from Senior Advisor or to call him, but I'm reading that gParted let's you decrese macOS partition size, so my foolish plan would be to resize the recovery partition in gParted and then increase the main partition in macOS. I do realise that this is farther away from Apple's documentation, but would be a scenario with which I would be somewhat comfortable. Do You think it could work?

mikelis Author

Level 1

13 points

Mar 5, 2018 5:47 AM in response to Loner T

Thanks, maybe some other day - right now I'm feeling *super stoked* about having 1,88tb and a working Mac, I can't over emphasize. Apple Senior Advisor said that it's impossible to do without erasing the entire drive, too. Perhaps really gotta wait till I'm feeling adventurous again or just need a non-virtual machine windows 😀 Lesson learned tho, will pay more attention to TM. Theoretically speaking, if I mess up in the command line, will TM restore the fusion drive and everything back to normal?

Loner T

Level 9

59,471 points

Mar 5, 2018 6:13 AM in response to mikelis

mikelis wrote:

Theoretically speaking, if I mess up in the command line, will TM restore the fusion drive and everything back to normal?

Unless you erase the underlying disks, TM will return the Mac to the current state.

mikelis Author

Level 1

13 points

Mar 5, 2018 10:46 AM in response to Loner T

Okay, at least I got that right, so theoretically this has a chance of bricking my mac or can the installer re-create the fusion drive even if all else fails? Sorry bout the question bombing, I just need to understand how this works

Loner T

Level 9

59,471 points

Mar 5, 2018 10:52 AM in response to mikelis

In Internet Recovery, you can rebuild the Fusion drive as many times as you want. You can also install macOS on an external disk, if the internal disk has issues. Unless you use a welding torch or a sledge hammer, it is tough to 'brick' a Mac. 😉