Çözüldü macOS High Sierra kurarken "Bu disk bilgisayarı başlatmak için kullanılamaz" sorunu

Evet yeniden Windows kurman gerekli sağlıklı bir işlem için. Yada farklı araçlar ile Efi bölümünü genişletmen gerekli ama biraz riskli veya başarısız olabilir.
[Çözüm] Bu Disk Bilgisayarı Başlatmak İçin Kullanılamaz

Windowsun efi boyutunu yükseltmek bende yeterli oldu. Baştan windows'da kurmadım. uefi'li windows kurulum usb'si hazırlayıp komut ekranında açıp aşağıdaki örnek komutları kendi diskiniz için uygulamayı deneyin.

As I said above, there’s a problem when trying to format the created partition for OS X while trying to install it. OS X will fail to format the created partition (we labeled it “MacOSX”) as HFS+ because of small EFI partition size since OS X requires big ‘enough’ EFI partition. So before attempting to install OS X, we’ll have to increase the size of that partition.

A default install of Windows 8.1 creates ~300MB Recovery partition, ~100MB EFI partition, and 128MB MSR (Microsoft Reserved) partition. This process (originally by RehabMan and slightly modified by me) removes the mentioned partitions and creates bigger EFI:

• Boot Windows installer USB (you should have one ready of course)
• Press Shift+F10 for recovery command line
• Type: diskpart
• Type: list disk (verify the disk number you want to work with, let's say it is 0)
• Type: select disk 0
• Type: list part (you should see all partitions)
• Type: select part 2 (assuming part 2 is EFI part)
• Type: assign
• Type: list vol (to find out the drive letter assigned to EFI and Windows partitions, lets assume they were E: and C: respectively)
• press Shift+F10 for another command prompt
• Type: robocopy e:\efi c:\efi.bak /mir
• Switch back to original command prompt (the one running diskpart)
• Type: select part 1
• Type: delete part override
• Type: select part 2
• Type: delete part override
• Type: select part 3
• Type: delete part override
• Type: create part efi size=528 (the space left by removing all three partitions Recovery, EFI, and MSR)
• Type: format quick fs=fat32 label="EFI"
• Type: assign
• Type: list vol (to find out new drive letter, assume it is F: )
• Switch back to other command prompt window (the one just running cmd)
• Type: robocopy c:\efi.bak f:\EFI /mir
• Type: exit
• Switch to original command prompt (the one running diskpart)
• Type: exit
• Type: exit
• Hit: Alt+F4 at the Windows installer to quit

Steps from 1 to 12 create backup of EFI partition contents so we can restore the contents after creating a bigger EFI and have Windows bootable. Then 13-18 it removes all three partitions Recovery, EFI, and MSR. Step 19 creates a new EFI partition with arbitrary size (put 528 which is the sum of previous EFI, Recovery, and MSR sizes). Step 20 format and label the new EFI partition, and finally step 24 restores EFI partition contents from the backup we created earlier.

At this point, you should verify that Windows still boots and it should.