I discovered myself needing in addition 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 obtained the Home windows Bootcamp partition booting once more: Bootcamp: no bootable system – insert boot disk and press any key
Now the attention-grabbing 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to provide me an additional 70 GB which I’d made into an ExFAT partition to share with Home windows (because the outdated bootcamp partition wasn’t going to be sufficiently big for my wants). After I first tried in addition 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 unique 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 glued 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 pleased to have gotten Home windows working, with the additional partition out there to it, however it could be good to get my unique 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 not giving me any data 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] <Unknown ID>
2: AC 25 127 15 - 1023 254 63 [ 409640 - 745459256] <Unknown ID>
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 advantageous to my eyes, it even studies the proper title for the quantity that will not boot “Macintosh HD”:
I concern I’m now getting out of my depth – so if anybody who understands the best way to repair partitions correctly may help I’d recognize it! Thanks!