Also add #define HFS_UUID_SUPPORT 1 to hfsutil_main.c.Change line 81 of hfsutil_main.c into static unsigned char kFSUUIDNamespaceSHA1 = (replacing the include line).Change line 80 of hfsutil_main.c into #include.Change line 47 of hfsutil_jnl.c into #include.Download hfs_fsctl.h from Apple and put it in the hfs.util folder.Download the hfs.util source from Apple and extract it to a temporary folder.I haven't been able to find a pre-modified version of hfs.util, but you can do it yourself using the information found in this Superuser question, summarized here: In Yosemite and after the -s flag has been disabled at the source level. Keep in mind this won't work for every volume, if the volume is not an HFS drive than it may not work, and other Filesystem/*.fs/*.util commands may not have a -s verb to generate UUIDs. You can use the hfs.util with the Device Identifier (replacing disk2s1 below) from diskutil to (re)generate a UUID for your volume: /System/Library/Filesystems/hfs.fs/hfs.util -s disk2s1 Run the diskutil command and then copy/remember/save the Device Identifier: diskutil info /Volumes/my_drive_label | grep 'Device Identifier' The only way I've been able to find involves a somewhat poorly documented feature of the hfs.util. Any ideas why and/or how to get the UUID?

Volume Free Space: 499.9 GB (499896778752 Bytes) (exactly 976360896 512-Byte-Blocks)īut as can be seen there is no UUID displayed. Name (User Visible): Windows NT File System (NTFS) I start with: diskutil info /Volumes/HD-PCTU3/ I want to enable NTFS on a USB3 external hard disk and need the UUID to do it ( ) but diskutil is refusing to give me the UUID.

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