Check the volume 'Macintosh HD' with Disk Utility and repair it if necessary.If you are restricted to WIFI and the boot process fails, just restart your Mac until you succeed booting.Īlternatively you may start from a bootable installer thumb drive (Mavericks or Yosemite) or a thumb drive containing a full system (Mavericks or Yosemite). I recommend ethernet because it's more reliable. 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. The prerequisites are the latest firmware update installed, either ethernet or WLAN (WPA/WPA2) and a router with DHCP activated. Restart to Internet Recovery Mode by pressing alt cmd R at startup. Detach any external drive (especially an external Time Machine backup drive).Start another computer or smartphone and access this page here to follow the instructions. ![]() Gpt show: /dev/disk0: Pri GPT at sector 1 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.ģ: Apple_Boot Recovery HD 650.0 MB disk0s3Ġ: Apple_HFS Macintosh HD *801.0 GB disk1ĭiskutil cs list command: CoreStorage logical volume groups (1 found) The old Windows 7 partition now shows up as free space. So I recently removed Windows 7 from my iMac, but Bootcamp didn't let me do it.
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