Resize Windows 7 BootCamp Partition on a MacMini
Post date: May 27, 2013 5:47:47 PM
How did I resize the Windows 7 ( Win7 ) BootCamp partition on my (kids) MacMini? I have a 2011 MacMini with a 500GB HD that has a 60GB Partition for Windoze7 created by BootCamp.
It became too small to hold all the games that are getting installed :( AND the Mac partition had lots of empty space.
You will need your windows install disc (or recovery disc)
You will need GParted Live iso
Here are the steps I used to increase the size of the Windoze partition:
It worked with NO data loss; however, there was a couple small tweaks to get the MacMini and the Windoze bootLoader to "see" the partition after the resize - see below.
- Download GParted live bootable iso
- Get a USB flash drive (a 1GB is big enough)
- On a linux box
- insert the usb drive
- go to a command line
- to see the device name it connected as
- mine came up as /dev/sdd
sudo dd if=/path-to-gparted-live.x.y.z-w.iso of=/dev/sdd bs=4M; sync
- this creates the bootable flashDrive
- IT OVERWITES the entire drive, so make sure you back up its original files.
- see GParted Live on USB page for other ways to create the USB drive
- Unmount the USB drive if it got mounted
sudo umount /dev/sdd
- On the MacMini:
- insert the newly created USB drive - GParted Live
- Re-power on and hold the Option key ('alt' key if you have a non-mac keyboard)
- this brings up the boot selection screen (Startup Manager)
- pick the USB drive
- It shows up as the orange Windows icon
- Wait until GParted starts up
- run the GParted app by double clickking its desktop icon
- Shrink the Mac Partition
- Move the Recovery partition next to the Mac Partition
- Grow the Windoze partition to fill the space
- Apply the changes
- Go get a beer and wait until its done
- Open a command window and type
sudo gptsync /path-to-disk-device
- Where /path-to-disk-device is the device /dev/sdb
- Find the device names in the upper right drop down in the gparted app
- do it for the mac and windoze partitions
- This is so the partitions show up in the mac after the move (see http://gparted.sourceforge.net/faq.php#faq-21)
- shutdown the gparted live
- Click the red shutdown icon on the desktop
- You now need your Windoze Install disk (flashed onto a USB drive) to fix the windoze bootloader.
- See my other blog entry on how to flash it.
- You could now re-use the gparted live usb drive and overwrite it
- Insert the Windoze Install USB drive and start the MacMini
- Hold the Option key while it boots and boot onto the USB Drive as you did in step 4-4
- a black Window install screen should come up
- select the Repair install selection (or was it recovery)
- It will suggest fixes to the master boot record.
- I accepted what it recommended
- Restart the MacMini (WITHOUT any usb drives)
- Hold the Option key while it boots to see what partitions show up
- All your partitions should show up (as in the picture above in 4-4)
- choose windows and you should boot into windoze with a bigger c:\ drive!