Mac OS X磁碟重新分區後 BootCamp Windows啟動項丟失

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前言

我有一台Mac，裝有OS X和Windows兩系統，因Windows和OS X都能讀寫exFAT分區，

故若在Machintosh HD和Windows HD之間開闢一個exFAT分區，可以作為共用檔案區。

我在OS X中用磁碟工具對Machintosh HD進行分區，在Machintosh HD和Windows HD之間開闢一個exFAT分區。

重啟啟動時，我按住了option，之後出現的啟動選項中沒有Windows。這因為剛才給磁碟分了區才導致的。

解決

重啟MAC ，按住COMMAND+R進入復原模式，開啟Terminal

csrutil disable #關閉rootless

 

修改完，重啟MAC，開啟終端

sudo fdisk -e /dev/disk0

yanghaodeMacBook-Pro:~ yanghao$ sudo fdisk -e /dev/disk0Password:fdisk: could not open MBR file /usr/standalone/i386/boot0: No such file or directoryEnter ‘help‘ for informationfdisk: 1> pDisk: /dev/disk0    geometry: 30515/255/63 [490234752 sectors]Offset: 0    Signature: 0xAA55         Starting       Ending #: id  cyl  hd sec -  cyl  hd sec [     start -       size]------------------------------------------------------------------------ 1: EE 1023 254  63 - 1023 254  63 [         1 -     409639] <Unknown ID> 2: AC 1023 254  63 - 1023 254  63 [    409640 -  183869624] <Unknown ID> 3: AB 1023 254  63 - 1023 254  63 [ 184279264 -    1269536] Darwin Boot *4: 07 1023 254  63 - 1023 254  63 [ 185548800 -  304685056] HPFS/QNX/AUXfdisk: 1>    

 修改分區表

fdisk: 1> pDisk: /dev/disk0    geometry: 30515/255/63 [490234752 sectors]Offset: 0    Signature: 0xAA55         Starting       Ending #: id  cyl  hd sec -  cyl  hd sec [     start -       size]------------------------------------------------------------------------ 1: EE 1023 254  63 - 1023 254  63 [         1 -     409639] <Unknown ID> 2: AC 1023 254  63 - 1023 254  63 [    409640 -  183869624] <Unknown ID> 3: AB 1023 254  63 - 1023 254  63 [ 184279264 -    1269536] Darwin Boot *4: 07 1023 254  63 - 1023 254  63 [ 185548800 -  304685056] HPFS/QNX/AUXfdisk: 1> setpid 4         Starting       Ending #: id  cyl  hd sec -  cyl  hd sec [     start -       size]------------------------------------------------------------------------*4: 07 1023 254  63 - 1023 254  63 [ 185548800 -  304685056] HPFS/QNX/AUXPartition id (‘0‘ to disable)  [0 - FF]: [7] (? for help) 07fdisk: 1> flag 4Partition 4 marked active.fdisk:*1> pDisk: /dev/disk0    geometry: 30515/255/63 [490234752 sectors]Offset: 0    Signature: 0xAA55         Starting       Ending #: id  cyl  hd sec -  cyl  hd sec [     start -       size]------------------------------------------------------------------------ 1: EE 1023 254  63 - 1023 254  63 [         1 -     409639] <Unknown ID> 2: AC 1023 254  63 - 1023 254  63 [    409640 -  183869624] <Unknown ID> 3: AB 1023 254  63 - 1023 254  63 [ 184279264 -    1269536] Darwin Boot *4: 07 1023 254  63 - 1023 254  63 [ 185548800 -  304685056] HPFS/QNX/AUXfdisk:*1> writeDevice could not be accessed exclusively.A reboot will be needed for changes to take effect. OK? [n] yWriting MBR at offset 0.

 重啟電腦按OPTION

 

Mac OS X磁碟重新分區後 BootCamp Windows啟動項丟失