Merging Corestorage

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diskutil cs list (to see corestorage device in fusion drive)

Deleting Drive Core storage

diskutil cs delete <uuid> (UUID core storage of the machintosh need to paste)


Merging Corestorage for exmaple 1TB fusion drive partition splited with two drives into 700 HDD and 300 SSD

Before merging fusion drive we have to unmount all partition on disk utility

Open terminal

diskutil list

diskutil cs create Macintosh\ HD /dev/disk0 /dev/disk1 and press enter its going
process for finished merging of corestorage (/dev/disk0 and /dev/disk1 this is your corestorage which will have some amount of space that we are going merger which is split before HHD/SSD)

diskutil cs list


After getting logical corestorage UUID we have to create volume

We have to get logical volume group ID before creating volume

diskutil cs createVolume (UUID of logical core storage) JHFS+ Macintosh\ HD 100% and press enter


Finally we have to go to diskutility and check fusion drive.We will get only one fusion drive and under will get macintosh HD


Enjoye its done.

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