How to get back in the car Fusion 3 TB to the original scores?

I just had my Fusion 3 TB 2012 end iMac drive replaced under warranty and have encountered a problem after trying to create a 2 TB Bootcamp partition.  For some reason, I ran into problems installing Win 10 after having successfully created the partition, so I decided to use the Bootcamp assistant to delete the Bootcamp partition, but it threw an error message before the end!  That left me with a disc Mac HD 1 TB and 2 TB of space utility disk refuses to acknowledge, and I don't see a way to extend the Mac HD partition to fill this space?  Is there a simple way to restore the drive to its original state or what I need to use commercial partitioning software to do this?

Apple did not provide an easy way to recover from this condition. Please read this message before doing anything. If you don't feel confident that you can follow the instructions, ask someone more experienced to help you. One option is to take an appointment 'Genius' on an Apple Store.

This procedure applies only to an iMac or a Mac mini with a drive installed in the smelter. If one of the internal drives (SSD and HDD) has been replaced by a hot spare, ask for other instructions.

You must read these instructions while no web browser is running, so either print them or load them onto another device before you start.

1. all the data on the internal disks will be deleted, including Boot Camp data, which are not saved by Time Machine. You need at least two complete and independent backups. A backup is not enough to be sure. There are ways to back up a computer that is not fully functional. Ask if you need advice.

2. you will need to start one recovery system other than the one on the internal hard drive (if he has one.) There are several ways to do so.

a. If you have a backup time of the Machine (not a network backup), or a compatible Mac OS X installation on an external drive, then you should be able to start it by holding down press option key to start ringing. Select the external hard drive in the row of icons that is displayed. I mean by "compatible", an installation running on the machine. A version of Mac OS X that is older than the machine is not compatible.

b. If you used Recovery Disk Wizard (or can use it now) to prepare a system recovery on a USB flash drive, you can start that by pressing the C button on the ring. No icons will appear. Startup will be much slower than usual.

c. start the Internet recovery mode by pressing the key combination command-option-R to start ringing. Release the keys when you see a spinning globe. Select a language, if you are prompted.

Note: You need an Ethernet or Wi - Fi connection to Internet to use the features of recovery network. It will not work with modems USB or PPPoE, proxy servers or networks that require a certificate for authentication.

3. disconnect all other external storage devices.

4. in the OS X Utilities screen, select get online help. Safari will launch. While in recovery, you will have no access to your bookmarks or history, but you won't need them. Load this web page.

5. triple - click anywhere in the line below to select this option:

diskutil cs deleteLVG `diskutil cs list | awk 'NR==3{print $NF}'`

Copy the selected text in the Clipboard by pressing Control-C key combination.

Quit Safari. You go back to the OS X Utilities screen.

6. in the menu bar, select

Utilities ▹ Terminal

Launch the Terminal application. Paste in the Terminal window by pressing the command-V key combination. Wait for a new line ending with a number sign (#) to appear. If nothing happens, press the return key.

Quit the Terminal must be returned to the main screen.

What happens then depends on what version of recovery that you are running.

☞ If the machine came with OS X 10.10 ("Yosemite"), 10.9 ("Swat") or 10.8 ("Mountain Lion"), and you're in the recovery of the Internet, please take step 7A and proceed to step 7B.

☞ otherwise, go to step 7A and 7B step.

If you are unsure which version of Mac OS X, the machine came with, search for it on this page.

After taking these steps apply, you must have a reader of empty Fusion named 'Macintosh HD' on which you can perform step 8a or 8b step.

7. repair of the Fusion drive (see "Troubleshooting" on the linked page.) Quit disk utility.

7. Enter the command below as in steps 4-6:

N=Macintosh\ HD; for d in /dev/disk?; do o=`diskutil info $d`; [[ ! "$SSD" ]] && grep -lqw 'APPLE SSD' <<< "$o" && SSD=$d; [[ ! "$HDD" ]] && grep -lqw 'APPLE HDD' <<< "$o" && HDD=$d; [[ "$SSD" && "$HDD" ]] && break; done; diskutil cs create "$N" $SSD $HDD && diskutil cs createLV "$N" jhfs+ "$N" 100%

It is a very long line, and you won't see it on the web page. Be sure to select the entire line, not just the part that you can see.

Leaving the Terminal.

8. If you have a Time Machine backup, connect the device to backup and restore your data. If you have saved to a network like a time Capsule device, it must be connected automatically.

8B. If you do not have a Time Machine backup, or if you can not restore from Time Machine backup that you do not have, install OS x Restore data later in The Migration Wizard.

In the Internet recovery mode, you install the original version of Mac OS X comes with the machine. If you have upgraded the operating system on the App Store, you will need to do it again.

Tags: Mac

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