I bought a new iMac (Retina 4K, 21.5-inch, 2017, with macOS High Sierra 10.13.5) and used Boot Camp to install Windows 10 on it. The Boot Camp drivers seem to have been installed successfully, and most things seem to work, but I am unable to access the Mac partition from Windows.
According to what I have read, the Boot Camp drivers are supposed to have a read-only driver for HFS+, but "Macintosh HD" does not show up for me.
I've read that FileVault could be the problem, but I double-checked, and FileVault is not enabled.
Then I read that the problem might be because of something called Core Storage. So I tried to follow these instructions to revert the partition. However, that only works if Revertible is Yes, and in my case, it is No.
CoreStorage logical volume groups (1 found)
|
+-- Logical Volume Group 9C641579-4351-491E-923A-B2DA1CF80C12
=========================================================
Name: Macintosh HD
Status: Online
Size: 724916166656 B (724.9 GB)
Free Space: 81920 B (81.9 KB)
|
+-< Physical Volume 123FF2CC-8363-4551-AEF2-535FAABDA521
| ----------------------------------------------------
| Index: 0
| Disk: disk1s2
| Status: Online
| Size: 27551166464 B (27.6 GB)
|
+-< Physical Volume 52D21296-80AE-4BC8-BA5F-583E65C62B42
| ----------------------------------------------------
| Index: 1
| Disk: disk0s2
| Status: Online
| Size: 697365000192 B (697.4 GB)
|
+-> Logical Volume Family 9619CA26-4D92-43F6-AC54-3E10E7F774A0
----------------------------------------------------------
Encryption Type: None
|
+-> Logical Volume CF6F0197-EDB6-4DC3-B3C4-C22A3DC99D2C
---------------------------------------------------
Disk: disk2
Status: Online
Size (Total): 724000440320 B (724.0 GB)
Revertible: No
LV Name: Macintosh HD
Volume Name: Macintosh HD
Content Hint: Apple_HFS
LVG Type: Fusion, Sparse
So, what can I do?
Additional information: Here is the result of running diskutil info /:
“`
Device Identifier: disk2
Device Node: /dev/disk2
Whole: Yes
Part of Whole: disk2
Device / Media Name: APPLE HDD HTS541010A9E632
Volume Name: Macintosh HD
Mounted: Yes
Mount Point: /
Content (IOContent): Apple_HFS
File System Personality: Journaled HFS+
Type (Bundle): hfs
Name (User Visible): Mac OS Extended (Journaled)
Journal: Journal size 81920 KB at offset 0x183df000
Owners: Enabled
OS Can Be Installed: Yes
Booter Disk: disk0s3
Recovery Disk: disk0s3
Media Type: Generic
Protocol: PCI-Express
SMART Status: Not Supported
Volume UUID: F7E21D0B-FE27-3F1E-AF88-6B86912A95F6
Disk / Partition UUID: CF6F0197-EDB6-4DC3-B3C4-C22A3DC99D2C
Disk Size: 724.0 GB (724000440320 Bytes) (exactly 1414063360 512-Byte-Units)
Device Block Size: 4096 Bytes
Volume Total Space: 724.0 GB (724000440320 Bytes) (exactly 1414063360 512-Byte-Units)
Volume Used Space: 29.6 GB (29556273152 Bytes) (exactly 57727096 512-Byte-Units) (4.1%)
Volume Free Space: 694.4 GB (694444167168 Bytes) (exactly 1356336264 512-Byte-Units) (95.9%)
Allocation Block Size: 4096 Bytes
Read-Only Media: No
Read-Only Volume: No
Device Location: Internal
Removable Media: Fixed
Solid State: Yes
Virtual: Yes
Hardware AES Support: No
This disk is a Core Storage Logical Volume (LV). Core Storage Information:
LV UUID: CF6F0197-EDB6-4DC3-B3C4-C22A3DC99D2C
LVF UUID: 9619CA26-4D92-43F6-AC54-3E10E7F774A0
LVG UUID: 9C641579-4351-491E-923A-B2DA1CF80C12
PV UUID (disk): 123FF2CC-8363-4551-AEF2-535FAABDA521 (disk1s2)
PV UUID (disk): 52D21296-80AE-4BC8-BA5F-583E65C62B42 (disk0s2)
Fusion Drive: Yes
Encrypted: No
“`
And here are a couple of screenshots from Disk Utility:
Also, here is the Windows version:
Best Answer
If you installed Windows 10 from an ISO that was released after the Anniversary Update was released, then this is normal. The HFS+ drivers that are made by Apple do not work on the Anniversary Update and later.