bless --info /Volumes/Clone
-bash-3.2# bless --folder /Volumes/Clone/System/Library/CoreServices --file /Volumes/Clone/System/Library/CoreServices/boot.efi
-bash-3.2# bless --info /Volumes/Clone
finderinfo[0]: 268572 => Blessed System Folder is /Volumes/Clone/System/Library/CoreServices
finderinfo[1]: 275384 => Blessed System File is /Volumes/Clone/System/Library/CoreServices/boot.efi
finderinfo[2]: 0 => Open-folder linked list empty
finderinfo[3]: 0 => No alternate OS blessed file/folder
finderinfo[4]: 0 => Unused field unset
finderinfo[5]: 268572 => OS X blessed folder is /Volumes/Clone/System/Library/CoreServices
64-bit VSDB volume id: 0x8F468A98A5A4C297
-bash-3.2#
kextcache -u /Volumes/Clone
diskutil list
Last login: Wed Apr 3 21:52:38 on console
MacBook-Pro-de-ANGELO:~ ANGELO$ diskutil list
/dev/disk0 (internal, physical):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *500.1 GB disk0
1: EFI EFI 209.7 MB disk0s1
2: Apple_CoreStorage Macintosh HD 499.2 GB disk0s2
3: Apple_Boot Recovery HD 650.0 MB disk0s3
/dev/disk1 (internal, virtual):
#: TYPE NAME SIZE IDENTIFIER
0: Apple_HFS Macintosh HD +498.9 GB disk1
Logical Volume on disk0s2
84D79706-394A-4B04-93B0-26484D73FD86
Unencrypted
/dev/disk2 (external, physical):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *1.0 TB disk2
1: EFI EFI 209.7 MB disk2s1
2: Apple_HFS Clone 999.9 GB disk2s2
MacBook-Pro-de-ANGELO:~ ANGELO$
diskutil eraseVolume jhfs+ "Macintosh HD" disk1