Repairing Boot Camp after creating new partition

You will temporarily lose Recovery HD.

1. Back up OS X.

2. Back up Windows. Run diskutil list to verify slice disk order.

3. Merge Recovery HD into OS X. The order of disks is critical in this step. Do not reorder disks under any circumstances.

diskutil mergePartitions JHFS+ "Macintosh HD" disk0s2 disk0s3

Here is the help for the command.

diskutil mergepartitions

Usage: diskutil mergePartitions [force] format name

DiskIdentifier|DeviceNode DiskIdentifier|DeviceNode

Merge two or more pre-existing partitions into one. The first disk parameter

is the starting partition; the second disk parameter is the ending partition;

this given range of two or more partitions will be merged into one.

All partitions in the range, except for the first one, must be unmountable.

All data on merged partitions other than the first will be lost; data on the

first partition will be lost as well if the "force" argument is given.

If "force" is not given, and the first partition has a resizable file system

(e.g. JHFS+), it will be grown in a data-preserving manner, even if a different

file system is specified (in fact, your file system and volume name parameters

are both ignored in this case). If "force" is not given, and the first

partition is not resizable, you will be prompted if you want to erase.

If "force" is given, the first partition is always formatted. You should

do this if you wish to reformat to a new file system type.

Merged partitions are required to be ordered sequentially on disk.

See diskutil list for the actual on-disk ordering; BSD slice identifiers

may in certain circumstances not always be in numerical order but the

top-to-bottom order given by diskutil list is always the on-disk order.

Ownership of the affected disk is required.

Example: diskutil mergePartitions JHFS+ NewName disk3s4 disk3s7

This example will merge all partitions *BETWEEN* disk3s4 and disk3s7,

preserving data on disk3s4 but destroying data on disk3s5, disk3s6,

disk3s7 and any invisible free space partitions between those disks;

disk3s4 will be grown to cover the full space if possible.

4. Once the merge is complete, you should now be able to stretch OS X in Disk Utility and stretch the bottom right corner so it touches the Bootcamp partition, which will absorb the 1.2 GB Free Space.

5. Re-install OSX to get Recovery HD back - OS X: About OS X Recovery - Apple Support.

6. Test both OSes, Local Recovery (Command+R) and Internet Recovery (Command+Opt+R - you must see a spinning a globe and please use a wired connection).

There are other variations to this method, but the end result will be the same.

gillus wrote:

Hello again dear personal life guard,

This made me chuckle a bit. I am 🙂 to help.

gillus wrote:

5) Re-install OSX to get Recovery HD back

THIS IS WERE I NEED MORE INFO : since previous step destroyed the recovery HD partition, (Command+R) should not work and I have to do a network recovery with (Command+Opt+R) ? OR can I restore from my opened session

Your are correct, local Recovery HD no longer exists at this point. Command+Opt+R is recommended using a Wired Network, and choose Re-Install OS X. Please be aware of

Which version of OS X is installed by OS X Recovery?

• If you use the Recovery System stored on your startup drive to reinstall OS X, it installs the most recent version of OS X previously installed on this computer.
• If you use Internet Recovery to reinstall OS X, it installs the version of OS X that originally came with your computer. After installation is finished, use the Mac App Store to install related updates or later versions of OS X that you have previously purchased.

For example, if your Mac originally came with Mountain Lion, but you know have Yosemite, you will get ML back, and then will have to upgrade.

There are other variants to get Recovery HD back, which include low level dd commands from OS X Terminal, but they can be convoluted and dangerous.

will I need the Time Machine backup even if things goes right ?

Will I be able to re-install not the original version (Mountain Lion) but Mavericks that I have currently ?

No, not under normal circumstances. If anything goes towards Murphy's Law, then this is a safeguard. If you have the Mavericks Installer Application, then you do not need Internet Recovery. You can put this installer on a USB and boot from it or if this installer is currently on your OS X partition, just run it and when it reboots, ensure that you are pointing to the current OS X partition.

will I loose programs like MICROSOFT OFFICE for MAC ?

No. But there is always a "but". If you choose the Internet Recovery path, you may run into issues where M$ Service Packs of Office 2011 may not be valid on ML. They will work once you get to Mavericks (10.9.5).

BTW, my son works on Robotics and writes some controller code. He enjoys it.

Thank you for posting back with your success. Always 😀 to see things working properly.