So I recently removed Windows 7 from my iMac, but Bootcamp didn't let me do it. I used Disk Utility instead. The old Windows 7 partition now shows up as free space. I want to reinstall Windows 7 again on my iMac, how do I set it up? Can I use the free space again? I want to give the Windows partition a bigger size than what the free space currently holds.
diskutil list command:
/dev/disk0
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *1.0 TB disk0
1: EFI EFI 209.7 MB disk0s1
2: Apple_CoreStorage 801.3 GB disk0s2
3: Apple_Boot Recovery HD 650.0 MB disk0s3
/dev/disk1
#: TYPE NAME SIZE IDENTIFIER
0: Apple_HFS Macintosh HD *801.0 GB disk1
Logical Volume on disk0s2
54E92188-CDD5-44AE-9D58-EF6A5B69D707
Unencrypted
diskutil cs list command:
CoreStorage logical volume groups (1 found)
|
+-- Logical Volume Group 25AF6969-0B3A-4C2C-BE38-29864C233F66
=========================================================
Name: Macintosh HD
Status: Online
Size: 801345126400 B (801.3 GB)
Free Space: 18907136 B (18.9 MB)
|
+-< Physical Volume 21095CB1-4D76-44F5-B438-0B84A06AB0E8
| ----------------------------------------------------
| Index: 0
| Disk: disk0s2
| Status: Online
| Size: 801345126400 B (801.3 GB)
|
+-> Logical Volume Family 2DDF1B89-E73A-45E7-96CD-5FA1DC9CA275
----------------------------------------------------------
Encryption Status: Unlocked
Encryption Type: None
Conversion Status: NoConversion
Conversion Direction: -none-
Has Encrypted Extents: No
Fully Secure: No
Passphrase Required: No
|
+-> Logical Volume 54E92188-CDD5-44AE-9D58-EF6A5B69D707
---------------------------------------------------
Disk: disk1
Status: Online
Size (Total): 800973897728 B (801.0 GB)
Conversion Progress: -none-
Revertible: Yes (no decryption required)
LV Name: Macintosh HD
Volume Name: Macintosh HD
Content Hint: Apple_HFS
sudo gpt -r -vvv show -l /dev/disk0 command:
gpt show: /dev/disk0: mediasize=1000204886016; sectorsize=512; blocks=1953525168
gpt show: /dev/disk0: PMBR at sector 0
gpt show: /dev/disk0: Pri GPT at sector 1
gpt show: /dev/disk0: GPT partition: type=C12A7328-F81F-11D2-BA4B-00A0C93EC93B, start=40, size=409600
gpt show: /dev/disk0: GPT partition: type=53746F72-6167-11AA-AA11-00306543ECAC, start=409640, size=1565127200
gpt show: /dev/disk0: GPT partition: type=426F6F74-0000-11AA-AA11-00306543ECAC, start=1565536840, size=1269536
gpt show: /dev/disk0: Sec GPT at sector 1953525167
start size index contents
0 1 PMBR
1 1 Pri GPT header
2 32 Pri GPT table
34 6
40 409600 1 GPT part - "EFI system partition"
409640 1565127200 2 GPT part - "Macintosh HD"
1565536840 1269536 3 GPT part - "Recovery HD"
1566806376 386718759
1953525135 32 Sec GPT table
1953525167 1 Sec GPT header
Specs:
- iMac11,2 3.2 GHZ
- 1 TB HDD
- OS X Yosemite version 10.10 (14a389)
- EFI Boot ROM-Version IM112.0057.B01 (the latest)
Best Answer
Preparation:
Restart to Internet Recovery Mode by pressing alt cmd R at startup.
The prerequisites are the latest firmware update installed, either ethernet or WLAN (WPA/WPA2) and a router with DHCP activated.
On a 50 Mbps-line it takes about 4 min (presenting a small animated globe) to boot into a recovery netboot image which usually is loaded from an apple/akamai server.
I recommend ethernet because it's more reliable. If you are restricted to WIFI and the boot process fails, just restart your Mac until you succeed booting.
Alternatively you may start from a bootable installer thumb drive (Mavericks or Yosemite) or a thumb drive containing a full system (Mavericks or Yosemite).
Revert CoreStorage Volume
Open Terminal from the menubar (Utilities/Terminal) and enter
diskutil cs list. The output will be this:diskutil coreStorage revert lvUUIDto revert your CoreStorage Volume to a standard volume. In your case this is:diskutil coreStorage revert 54E92188-CDD5-44AE-9D58-EF6A5B69D707This will take a few seconds.