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User profile for user: Loner T
Loner T Author
User level: Level 9
59,513 points

OSX and Bootcamp discussion

Bootcamp and CoreStorage volumes and Windows drivers for CoreStorage in W8.1 and higher.

Posted on Aug 19, 2014 8:21 AM

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3 replies
User profile for user: Christopher Murphy
Christopher Murphy
User level: Level 3
560 points

Aug 19, 2014 8:44 AM in response to Loner T

Since it looks like everyone's going to get CoreStorage volumes by default with Yosemite, even if they don't use FileVault 2 or a "fusion" drive, I'm going to guess that Apple's Bootcamp drivers for Windows will enable Windows to read CoreStorage volumes.


But this has always been read only support in the past. I wonder about 3rd party read/write HFS+ support, which will not work on a CoreStorage volume until that software is updated to support CoreStorage.

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User profile for user: Loner T
Loner T Author
User level: Level 9
59,513 points

Aug 19, 2014 3:29 PM in response to Christopher Murphy

A full clean install...


Before Bootcamp (via CSM-BIOS), this is what it looks like...


diskutil list

/dev/disk0

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *256.1 GB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_CoreStorage 255.2 GB disk0s2

3: Apple_Boot Recovery HD 650.0 MB disk0s3

/dev/disk1

#: TYPE NAME SIZE IDENTIFIER

0: Apple_HFS OSY-MBP13 *253.4 GB disk1

Logical Volume on disk0s2

8A0116D5-7E1E-44D8-B2A0-8D4E4D48298D

Unencrypted



diskutil cs list

CoreStorage logical volume groups (1 found)

|

+-- Logical Volume Group 57578357-3715-48A5-AB8A-4107AF12F7FB

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

Name: OSY-MBP13

Status: Online

Size: 255200755712 B (255.2 GB)

Free Space: 1424523264 B (1.4 GB)

|

+-< Physical Volume 4D897085-0793-48CC-A00F-58572A56B043

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

| Index: 0

| Disk: disk0s2

| Status: Online

| Size: 255200755712 B (255.2 GB)

|

+-> Logical Volume Family 11EBF920-AA4B-4EC6-AC7F-7CC70E69883C

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

Encryption Status: Unlocked

Encryption Type: None

Conversion Status: NoConversion

Conversion Direction: -none-

Has Encrypted Extents: No

Fully Secure: No

Passphrase Required: No

|

+-> Logical Volume 8A0116D5-7E1E-44D8-B2A0-8D4E4D48298D

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

Disk: disk1

Status: Online

Size (Total): 253423910912 B (253.4 GB)

Conversion Progress: -none-

Revertible: Yes (no decryption required)

LV Name: OSY-MBP13

Volume Name: OSY-MBP13

Content Hint: Apple_HFS



I can no longer see the OS X partition on the Windows side. After Bootcamp (via CSM-BIOS), this is what it looks like...


diskutil list

/dev/disk0

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *256.1 GB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_CoreStorage 128.2 GB disk0s2

3: Apple_Boot Recovery HD 650.0 MB disk0s3

4: Microsoft Basic Data BOOTCAMP 127.0 GB disk0s4

/dev/disk1

#: TYPE NAME SIZE IDENTIFIER

0: Apple_HFS OSY-MBP13 *126.4 GB disk1

Logical Volume on disk0s2

8A0116D5-7E1E-44D8-B2A0-8D4E4D48298D

Unencrypted



diskutil cs list

CoreStorage logical volume groups (1 found)

|

+-- Logical Volume Group 57578357-3715-48A5-AB8A-4107AF12F7FB

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

Name: OSY-MBP13

Status: Online

Size: 128200753152 B (128.2 GB)

Free Space: 1424523264 B (1.4 GB)

|

+-< Physical Volume 4D897085-0793-48CC-A00F-58572A56B043

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

| Index: 0

| Disk: disk0s2

| Status: Online

| Size: 128200753152 B (128.2 GB)

|

+-> Logical Volume Family 11EBF920-AA4B-4EC6-AC7F-7CC70E69883C

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

Encryption Status: Unlocked

Encryption Type: None

Conversion Status: NoConversion

Conversion Direction: -none-

Has Encrypted Extents: No

Fully Secure: No

Passphrase Required: No

|

+-> Logical Volume 8A0116D5-7E1E-44D8-B2A0-8D4E4D48298D

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

Disk: disk1

Status: Online

Size (Total): 126423908352 B (126.4 GB)

Conversion Progress: -none-

Revertible: Yes (no decryption required)

LV Name: OSY-MBP13

Volume Name: OSY-MBP13

Content Hint: Apple_HFS




Disk: /dev/disk0 geometry: 31130/255/63 [500118192 sectors]

Signature: 0xAA55

Starting Ending

#: id cyl hd sec - cyl hd sec [ start - size]

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

1: EE 1023 254 63 - 1023 254 63 [ 1 - 409639] <Unknown ID>

2: AC 1023 254 63 - 1023 254 63 [ 409640 - 250392096] <Unknown ID>

3: AB 1023 254 63 - 1023 254 63 [ 250801736 - 1269536] Darwin Boot

*4: 07 1023 254 63 - 1023 254 63 [ 252071936 - 248045568] HPFS/QNX/AUX



sudo gpt -vv -r show /dev/disk0

gpt show: /dev/disk0: mediasize=256060514304; sectorsize=512; blocks=500118192

gpt show: /dev/disk0: Suspicious MBR at sector 0

gpt show: /dev/disk0: Pri GPT at sector 1

gpt show: /dev/disk0: Sec GPT at sector 500118191

start size index contents

0 1 MBR

1 1 Pri GPT header

2 32 Pri GPT table

34 6

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

409640 250392096 2 GPT part - 53746F72-6167-11AA-AA11-00306543ECAC

250801736 1269536 3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

252071272 664

252071936 248045568 4 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

500117504 655

500118159 32 Sec GPT table

500118191 1 Sec GPT header



sudo gdisk /dev/disk0

Password:

GPT fdisk (gdisk) version 0.8.10


Warning: Devices opened with shared lock will not have their

partition table automatically reloaded!

Partition table scan:

MBR: hybrid

BSD: not present

APM: not present

GPT: present


Found valid GPT with hybrid MBR; using GPT.


Command (? for help): p

Disk /dev/disk0: 500118192 sectors, 238.5 GiB

Logical sector size: 512 bytes

Disk identifier (GUID): 22749ACF-207D-458E-B255-5DF02C39DC2D

Partition table holds up to 128 entries

First usable sector is 34, last usable sector is 500118158

Partitions will be aligned on 8-sector boundaries

Total free space is 1325 sectors (662.5 KiB)


Number Start (sector) End (sector) Size Code Name

1 40 409639 200.0 MiB EF00 EFI System Partition

2 409640 250801735 119.4 GiB AF05 OSY-MBP13

3 250801736 252071271 619.9 MiB AB00 Recovery HD

4 252071936 500117503 118.3 GiB 0700 BOOTCAMP


Command (? for help): q

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User profile for user: Loner T
Loner T Author
User level: Level 9
59,513 points

Sep 1, 2014 7:51 AM in response to Christopher Murphy

Some additional testing using ML 10.8.5 and CoreStorage. This is an example of reducing/creating new volumes when the original volume covers the entire set of two disks. (This is a 512GB SSD/1TB HDD Mac mini 2012).


Original CS volume…


diskutil cs list


CoreStorage logical volume groups (1 found)

|

+-- Logical Volume Group 6E1AD8BE-19AB-487B-ACC2-176845EB73B0

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

Name: Internal Drive

Status: Online

Size: 1511111344128 B (1.5 TB)

Free Space: 73728 B (73.7 KB)

|

+-< Physical Volume FD484F82-5D2D-4A52-99E1-A81454B5A51F

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

| Index: 0

| Disk: disk0s2

| Status: Online

| Size: 511766216704 B (511.8 GB)

|

+-< Physical Volume 6F492ECF-807E-45D3-9985-7171D8FE503A

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

| Index: 1

| Disk: disk1s2

| Status: Online

| Size: 999345127424 B (999.3 GB)

|

+-> Logical Volume Family 886E75D1-D9DE-496D-9CF8-6B632261B0D5

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

Encryption Status: Unlocked

Encryption Type: None

Conversion Status: NoConversion

Conversion Direction: -none-

Has Encrypted Extents: No

Fully Secure: No

Passphrase Required: No

|

+-> Logical Volume A7EBBD35-B264-4A0B-9F28-DFA74C16BBF9

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

Disk: disk2

Status: Online

Size (Total): 1501425287168 B (1.5 TB)

Size (Converted): -none-

Revertible: No

LV Name: OSX-Server-HD

Volume Name: OSX-Server-HD

Content Hint: Apple_HFS



diskutil cs info 6E1AD8BE-19AB-487B-ACC2-176845EB73B0


Core Storage Properties:

Role: Logical Volume Group (LVG)

UUID: 6E1AD8BE-19AB-487B-ACC2-176845EB73B0

LVG Name: Internal Drive

LVG Version: 1

LVG Size: 1511111344128 B

LVG Free Space: 73728 B

LVG Status: Online


diskutil cs info 886E75D1-D9DE-496D-9CF8-6B632261B0D5


Core Storage Properties:

Role: Logical Volume Family (LVF)

UUID: 886E75D1-D9DE-496D-9CF8-6B632261B0D5

Parent LVG UUID: 6E1AD8BE-19AB-487B-ACC2-176845EB73B0

LVF Encryption Status: Unlocked

LVF Encryption Type: None


diskutil cs info A7EBBD35-B264-4A0B-9F28-DFA74C16BBF9


Core Storage Properties:

Role: Logical Volume (LV)

UUID: A7EBBD35-B264-4A0B-9F28-DFA74C16BBF9

Parent LVF UUID: 886E75D1-D9DE-496D-9CF8-6B632261B0D5

Parent LVG UUID: 6E1AD8BE-19AB-487B-ACC2-176845EB73B0

Device Identifier: disk2

LV Status: Online

Conversion Status: NoConversion

Content Hint: Apple_HFS

LV Name: OSX-Server-HD

Volume Name: OSX-Server-HD

LV Size: 1501425287168 B



Reducing the volume (the resizeVolume verb is not documented very well).


diskutil cs resizevolume A7EBBD35-B264-4A0B-9F28-DFA74C16BBF9 1024g


Started CoreStorage operation

Checking file system

Performing live verification

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

The volume OSX-Server-HD appears to be OK

Shrinking file system

Shrinking Logical Volume

Resizing Core Storage Logical Volume structures

Resized Core Storage Logical Volume to 1024000000000 bytes

Finished CoreStorage operation



After Reduction…


diskutil cs list


CoreStorage logical volume groups (1 found)

|

+-- Logical Volume Group 6E1AD8BE-19AB-487B-ACC2-176845EB73B0

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

Name: Internal Drive

Status: Online

Size: 1511111344128 B (1.5 TB)

Free Space: 477425377280 B (477.4 GB)

|

+-< Physical Volume FD484F82-5D2D-4A52-99E1-A81454B5A51F

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

| Index: 0

| Disk: disk0s2

| Status: Online

| Size: 511766216704 B (511.8 GB)

|

+-< Physical Volume 6F492ECF-807E-45D3-9985-7171D8FE503A

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

| Index: 1

| Disk: disk1s2

| Status: Online

| Size: 999345127424 B (999.3 GB)

|

+-> Logical Volume Family 886E75D1-D9DE-496D-9CF8-6B632261B0D5

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

Encryption Status: Unlocked

Encryption Type: None

Conversion Status: NoConversion

Conversion Direction: -none-

Has Encrypted Extents: No

Fully Secure: No

Passphrase Required: No

|

+-> Logical Volume A7EBBD35-B264-4A0B-9F28-DFA74C16BBF9

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

Disk: disk2

Status: Online

Size (Total): 1024000000000 B (1.0 TB)

Size (Converted): -none-

Revertible: No

LV Name: OSX-Server-HD

Volume Name: OSX-Server-HD

Content Hint: Apple_HFS



Create a new volume from freed up space…


diskutil cs createvolume 6E1AD8BE-19AB-487B-ACC2-176845EB73B0 jhfs+ OSX-Server-MT 256g


Started CoreStorage operation

Waiting for Logical Volume to appear

Formatting file system for Logical Volume

Initialized /dev/rdisk3 as a 238 GB HFS Plus volume with a 24576k journal

Mounting disk

Core Storage LV UUID: 49876AD9-62BC-4FE6-9E91-026958E4D5D8

Core Storage disk: disk3

Finished CoreStorage operation



diskutil cs list


CoreStorage logical volume groups (1 found)

|

+-- Logical Volume Group 6E1AD8BE-19AB-487B-ACC2-176845EB73B0

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

Name: Internal Drive

Status: Online

Size: 1511111344128 B (1.5 TB)

Free Space: 221425377280 B (221.4 GB)

|

+-< Physical Volume FD484F82-5D2D-4A52-99E1-A81454B5A51F

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

| Index: 0

| Disk: disk0s2

| Status: Online

| Size: 511766216704 B (511.8 GB)

|

+-< Physical Volume 6F492ECF-807E-45D3-9985-7171D8FE503A

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

| Index: 1

| Disk: disk1s2

| Status: Online

| Size: 999345127424 B (999.3 GB)

|

+-> Logical Volume Family 886E75D1-D9DE-496D-9CF8-6B632261B0D5

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

| Encryption Status: Unlocked

| Encryption Type: None

| Conversion Status: NoConversion

| Conversion Direction: -none-

| Has Encrypted Extents: No

| Fully Secure: No

| Passphrase Required: No

| |

| +-> Logical Volume A7EBBD35-B264-4A0B-9F28-DFA74C16BBF9

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

| Disk: disk2

| Status: Online

| Size (Total): 1024000000000 B (1.0 TB)

| Size (Converted): -none-

| Revertible: No

| LV Name: OSX-Server-HD

| Volume Name: OSX-Server-HD

| Content Hint: Apple_HFS

|

+-> Logical Volume Family 04F7461B-657B-4F25-A188-ABE36E79D4CF

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

Encryption Status: Unlocked

Encryption Type: None

Conversion Status: NoConversion

Conversion Direction: -none-

Has Encrypted Extents: No

Fully Secure: No

Passphrase Required: No

|

+-> Logical Volume 49876AD9-62BC-4FE6-9E91-026958E4D5D8

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

Disk: disk3

Status: Online

Size (Total): 256000000000 B (256.0 GB)

Size (Converted): -none-

Revertible: No

LV Name: OSX-Server-MT

Volume Name: OSX-Server-MT

Content Hint: Apple_HFS



diskutil list


/dev/disk0

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *512.1 GB disk0

1: EFI 209.7 MB disk0s1

2: Apple_CoreStorage 511.8 GB disk0s2

3: Apple_Boot Boot OS X 134.2 MB disk0s3

/dev/disk1

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *1.0 TB disk1

1: EFI 209.7 MB disk1s1

2: Apple_CoreStorage 999.3 GB disk1s2

3: Apple_Boot Boot OS X 650.0 MB disk1s3

/dev/disk2

#: TYPE NAME SIZE IDENTIFIER

0: Apple_HFS OSX-Server-HD *1.0 TB disk2

/dev/disk3

#: TYPE NAME SIZE IDENTIFIER

0: Apple_HFS OSX-Server-MT *256.0 GB disk3

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