I discovered myself needing besides up my Home windows 10 Bootcamp partition for the primary time since I up to date my 2014 MBPro to Mojave years in the past, and found the Bootcamp partition wouldn’t boot: “no bootable system – insert boot disk and press any key”.
So I adopted these useful directions utilizing gdisk and acquired the Home windows Bootcamp partition booting once more: Bootcamp: no bootable system – insert boot disk and press any key
Now the fascinating stuff occurs – I had beforehand resized my Mac APFS partition to provide me an additional 70 GB which I’d made into an ExFAT partition to share with Home windows (because the outdated bootcamp partition wasn’t going to be large enough for my wants). Once I first tried besides into Home windows, and observed it wasn’t booting, I initially determined to surrender on that third partition and so reformatted it as APFS and left it there in case I wanted it once more. Having now fastened the Home windows booting drawback I made a decision I ought to return to my authentic plan, so, in Mac OS utilizing Disk Util, I reformatted that partition again into ExFAT and I renamed it “Home windows”.
I then rebooted again into Home windows to see if it may see that partition, and the Mac went straight into Web Restoration mode – no bootable disk was discovered, neither Home windows nor Mac. As I used to be in Web Restoration mode I had no entry to gdisk, so used the handbook course of additionally described within the hyperlink above to make Home windows bootable once more: I ran gpt -r present /dev/disk0 and famous down the numbers, and stuck the partition utilizing fdisk.
Now I used to be in a position to boot into Home windows but once more, however the Macintosh HD half nonetheless stays unbootable. In Home windows I observed the additional empty partition wasn’t given a drive letter, so I reformatted it as NTFS after which I may entry it.
Since then I’m comfortable to have gotten Home windows working, with the additional partition accessible to it, however it will be good to get my authentic Mac partition booting up once more! I had one other try in Web Restoration utilizing “gpt” to see if I may see what the issue was and it’s no longer giving me any info and simply exhibits:
[-bash-3.2# gpt -r show /dev/disk0 gpt show: /dev/disk0: Suspicious MBR at sector 0 gpt show: error: bogus map gpt show: unable to open device '/dev/disk0': Undefined error: 0 Here’s what diskutil shows:
[-bash-3.2# diskutil list /dev/disk0 (internal, physical): #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *500.3 GB disk0 1: EFI EFI 209.7 MB disk0s1 2: Apple_CoreStorage 381.7 GB disk0s2 3: Microsoft Basic Data Windows 69.9 GB disk0s3 4: Microsoft Basic Data BOOTCAMP 48.4 GB disk0s4 And fdisk:
[-bash-3.2# fdisk /dev/disk0 Disk: /dev/disk0 geometry: 60821/255/63 [977105060 sectors] Signature: 0xAA55 Beginning Ending #: id cyl hd sec - cyl hd sec [ start - size] ------------------------------------------------------------------------- 1: EE 0 0 2 - 25 127 14 [ 1 - 409639] 2: AC 25 127 15 - 1023 254 63 [ 409640 - 745459256] 3: 07 1023 254 63 - 1023 254 63 [ 745869312 - 136456192] HPFS/QNX/AUX *4: 07 1023 254 63 - 1023 254 63 [ 882587648 - 93368320] HPFS/QNX/AUX I used to be additionally in a position to run gdisk64 0: from my now working Home windows 10 aspect and it appears to look effective to my eyes, it even experiences the proper identify for the quantity that will not boot “Macintosh HD”:
I concern I’m now getting out of my depth – so if anybody who understands find out how to repair partitions correctly might help I’d admire it! Thanks!
