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Bootcamp mbr gpt error. " Here's where it gets frustrating (AGAIN).
- Bootcamp mbr gpt error. How I installed Windows 10 on my 2011 iMac in 2021 WITHOUT Bootcamp + Common Error Solutions Still works in 2021! This error: "Windows cannot be installed to this disk. If you want to convert between GPT and MBR without affecting the OS, you need Nov 5, 2011 · I use iPartition for Boot Camp disks to keep the MBR/GPT in sync, create new partitions, or resize partitions. Looking at the MBR it looks like this The Bootcamp disk is available in all of the following situations: Disk utility in MacOS Finder (showing all individual files as well, and I can even copy files to Mac folders) Aug 14, 2018 · I have a new MacBook Pro 2018, I9, 32Gb RAM, 2Tb SSD, running MacOS High Sierra 10. Apple does not seem to have done anything about this and continues to provide software in their new OS which is broken and cannot possibly work. The "internet" solution Macs use the more modern GUID Partition Table (GPT) format to define where each of the partitions are, but for Boot Camp booting into Windows, you need a fake version of a traditional Master Boot Record (MBR) on the drive. Directly after the bootcamp assistant finished it boots with a prompt where it says it's booting a bootcamp prepared usb medium and with lower resolusion. I have two programs that must use Windows and require communication protocols such that they cannot function under Parallels or VMWare Fusion. Oct 31, 2018 · Windows will show a hybrid MBR as MBR and a GPT only as GPT whether it is a system, internal or external drive. 2. 6 with the Supplemental update installed, and am unable to install Windows 10 using bootcamp. On EFI system, Windows can only be installed to GPT disks" is common when Mar 22, 2021 · MBR2GPT is an excellent tool to convert a disk from Master Boot Record (MBR) to the GUID Partition Table (GPT). I'll describe how to do it with my own GPT fdisk (gdisk) utility: Download GPT fdisk from its Sourceforge page and install it. Apple's Boot Camp Assistant takes care of creating this "Protective Master Boot Record" or "PMBR" as they call it. 1 insists it must sit on a GPT disk. 1 on Yosemite via Boot Camp Assistant, but got an error: Windows cannot be installed to this disk. Feb 11, 2018 · インストールするディスク選択画面にて、bootcamp用パーティションをフォーマットするも、 ”選択されたディスクにはMBRパーティションがあります。 EFIシステムでは、GPTディスクのみにWindowsをインストールできます”となり選択不能。 （ここから進捗なし） May 6, 2021 · If you get a GPT vs MBR error, GPT Fdisk (https://sourceforge. The problem is that the GPT is the real partition table, and sooner or later, the mismatch will cause problems because either the hybrid MBR will Oct 8, 2017 · The disk named Bootcamp, can't be installed because its not NTFS, so I choose format and now the problem is: Windows cannot be instaThe Selected disk is of the GPT partition style. net/projects/gptfdisk/) can be used to remove the Hybrid MBR. Are there any workarounds for this? Thanks. By Jun Ishiwata February 6, 2019 in Troubleshooting Followers 1 Go to solution Solved by Jun Ishiwata, February 6, 2019 Windows is supposed to be using GPT, but for some reason it's confused when there is a hybrid MBR and is not able to find the Windows partition, therefore not booting up. Note: A GPT disk is only compatible with UEFI and an MBR disk with Legacy BIOS mode. I removed Bootcamp partition with Bootcamp utility - this reverts partition table to GUID. 2 and Windows 8. Jun 27, 2008 · I don't understand the question. 1 installed on my iMac. The selected disk is of the GPT partition style. You first need to boot into Local Recovery and hold Command+R and use csrutil disable to disable SIP. The selected disk has an MBR-partition. therefore, you'd better backup the needed information before doing it. It was when I tried to format the Windows partition to NTFS did I run into the MBR/GPT issue. I built my computer with parts I ordered and things were ok except that I kept getting BSOD's with System Service Exceptions. After downloading and extracting, you will need to enter the command gdisk64 \\. And the installation has gone just fine. Oct 12, 2019 · Hi everyone! Thanks in advance for all your help. Please if someone knows how to fix this please help me, this is driving me crazy. " Now, I sort of knew that this was going to come up because Mac usually uses an MBR partition, but it is arranged in a BIOS system for Windows to use. Your 'possible cause' gets this exactly backwards. A number of utilities can do this. Fix GPT Error: Windows cannot be installed to this disk 123myIT 69. Feb 5, 2017 · This will also overwrite your current MBR, which can also be recreated using Gdisk after the new GPT is in place. Linux Boot Files An Ubuntu installation should be bootable from the Mac Startup Manager. A Hybrid MBR allows Windows in legacy BIOS mode using the Windows icon from the USB Installer on 2012-2014 Macs. May 26, 2020 · The UEFI specification requires the Master Boot Record (MBR) table to contain a single type EE hexadecimal entry which covers the entire drive, except for sector 0 which is where the MBR is stored. Any format from Disk Utility and/or the Windows installation page does not work and I always get the error message "Windows cannot be installed to this disk. This not only comes in handy while creating May 27, 2025 · How to repair your EFI Bootloader Windows 7 and Windows 8 are no longer supported by Microsoft and typically installed on a Legacy BIOS that used the Main Boot Record (MBR). So I used gparted to move the BootCamp partition to the end of the drive, and apparently killed the MBR in the process. Feb 28, 2025 · On Windows 10, if you have to convert the drive from MBR to GPT, you may encounter some issues along the way, but you can fix them quite easily, depending on the error in question. Nov 9, 2014 · Even though it appears as GPT to OS X, Disk Utility formats it in a hybrid way, so that OS X sees it as GPT and Windows see it as MBR. Sep 7, 2020 · Converting MBR to GPT Hi, Im trying to install windows 10 on my mac mini using a usb installer (not bootcamp assistant) but when I create the installer on my other bootcamped mac it is made into an MBR drive. I powered on the pc this morning and it goes to the Windows black screen with blue logo and continues to the black screen with circle dots. This answer is dangerously wrong. After the installation finished, restart your system and enjoy! Sep 20, 2015 · I have a MacBook Pro 13' (Mid-2012) 2. User Semi has noted that the Boot Camp Assistant (BCA) will correctly GPT/MBR hybrid partition the drive. BUT The subsequent Yosemite upgrade installation did something to corrupt booting the formerly usable Bootcamp installation. I found and installed a OS X command line utility 'gdisk' which changed the hybrid MBR data to allow Windows to install properly. During the installation process it warned me about an MBR/GPT partition conflict, but installation seemed to continue. Then the normal windows boot kept saying it is in GPT It needs to be MBR on 2012 and older Macs. I seem to remember that this is normal -- Boot Camp deliberately boots Windows in emulated "BIOS" mode, and it either lies to Windows about the partition table, or constructs a hybrid GPT which has real partitions within the MBR, or something like that? Aug 18, 2015 · @klanomath's answer got my system out of the Yosemite upgrade loop, and the link he provided led to fixing the mismatch between the GPT and MBR partitions. The protective MBR (type EE) is not the distinguising feature (GPT always has this) but rather the presense of hybrid MBR. I managed to re-install the audio drivers from RealTek website (updated), but the problem remains the same. 3 but it doesn' install on the partition for bootcamp. Nov 12, 2013 · Now that I had a concrete error that I could search for, I quickly found this post. Windows says it is a MBR partition table and must be GPT on EFI disks. You can use diskpart. 10. Mar 17, 2018 · The selected disk has an MBR Partition table, on EFI systems Windows can only be installed to GPT disks. 9GHz with 750Gb and 8Gb RAM and I've installed Windows 10 in my Boot Camp partition. So someone else told me they tried to install windows by making an MBR partition scheme for the windows installer using rufus. to/3636aHP Learn how to easily convert MBR Partition to GPT partition on Macbook. Mar 8, 2015 · Boot Camp problem, MBR, GPT Hi! So I got a 2011 MacBook Pro, running Yosemite version 10. I'm absolutely lost. Dec 3, 2019 · Install Windows 10 Legacy on 2009-2011 iMac with upgraded GPU Apple has released UEFI based support for BootCamp only for 2012+ machines. A Protective MBR allows EFI Boot on Late 2013 or later Macs. Jan 7, 2024 · Windows 10 Bootcamp GPT error, iMac Late 2012 macOS Catalina My wife wanted to play a Windows game, so I decided to reinstall Windows 10 on her 2012 iMac, process works fine, but when I get to the installation drive, I get this error: "Windows cannot be installed to this disk. Dec 9, 2023 · MBR (Master Boot Record) and GPT (GUID Partition Table) are two types of partition tables – GPT being the newer and more flexible one. On EFI systems, Windows can only be installed to GPT disks. Jun 27, 2024 · If the second sentence in your error message reads, “ The selected disk has an MBR partition table. " Feb 11, 2018 · Assuming your external drive installer has the correct Boot Camp Support Software, you should be able to install Windows 10 with using the Boot Camp Assistant. The selected disk is of GPT partition style". Oct 1, 2012 · Bootcamp utility creates hybrid-MBR table and this prevents Windows 8 to be installed. I'm removing my Boot Camp partition and will re-attempt the install to see if that resolves the issue. Boot Camp adds a layer atop that to allow Windows to recognize and boot on an Intel Mac. Jan 6, 2020 · I have spent 4 days now, trying to install Windows7 64 bit on my MacBook Pro 13 mid 2010 with High Sierra installed on it. Sep 12, 2019 · I then converted the Hybrid GPT/MBR partition scheme the BootCamp had created to GPT with protected MBR by: (1) disabling SIP – boot the MAC while holding down command+R to get to OSX Recovery, start Terminal from the Utilities menu, run “crsutil disable”, restart the MAC. I have 2 internal drives: 1 drive is internal 1TB SSD which contains the Mac OS and where I wish to partition and install Bootcamp. efi file on your EFI, which is needed for booting OpenCore. On EFI systems, Windows can only be installed on GPT disks,” it means your PC has a UEFI BIOS. To solve this issue, you simply need to use the correct BIOS mode with GPT, which is UEFI. Likely an older EFI implementation on these systems, isn't letting Boot Camp Assistant play nice with the creation of the Windows boot volume on the external USB hard drive. Oct 20, 2023 · In this particular case, your BIOS is likely set to Legacy BIOS mode which isn’t supported by the disk with GPT partition style. Macs operate on an EFI system and Windows can only be installed on a GPT disk partition, hence the error when you try to install windows. 1 sees it as MBR and refuses to proceed with the installation because Window 8/8. All partitions on the Mac are Hybrid MBR/GPT partitions which MacOS sees as GPT and Windows sees as MBR and refuses to install wanting a GPT partition. However, Windows 11 and Windows 10 are designed to install on the UEFI BIOS using the EFI bootloader and GPT. If this were a Windows laptop First, heed gdisk 's warning about mismatched GPT and MBR partition tables!!!! A common cause of this warning is that you've modified the MBR partition table using a GPT-unaware tool. 7. I reformatted the disk as MBR with a single exFat partition named BOOTCAMP. Read more inside! Jun 18, 2021 · Using a GPT partition scheme gives a black screen when the graphics drivers are installed. This is where I started to look for solutions online ( but they all failed ). It can be corrected using GPT Fdisk. Mar 17, 2017 · Bootcamp assistant and Windows 10 installation is broken on MacOS Sierra. Then i get an error message saying windows can´t be installed on the disk because it uses an MBR partition table and it needs to be GPT instead. This can happen if you use a Windows tool to repartition the disk. Feb 12, 2025 · 0 I found myself needing to boot up my Windows 10 Bootcamp partition for the first time since I updated my 2014 MBPro to Mojave years ago, and discovered the Bootcamp partition wouldn’t boot: “no bootable device – insert boot disk and press any key”. When I tried to formate the bootcamp partition to NTFS I got an error message telling me that Windows cannot be installed to this disk. Here are the resources to download the official Windows ISO files: Download Windows 11 ISO Download Windows 10 ISO Download Windows 7 ISO Burn the ISO to a DVD Bootcamp reports the "The installer disc could not be found. Oct 3, 2015 · Boot Camp creates a FAT32 partition since Microsoft does not license the means to format a drive as NTFS to anyone. Jan 5, 2015 · Bootcamp vs rEFIt & rEFInd, mbr, gpt I've been trying to install Windows 8. So how do i fix this? Macintosh HD Recovery HD BOOTCAMP The GPT additionally contained a BitLocker recovery partition after BOOTCAMP. Since the EFI partition should not exist in the MBR, the Linux and Windows partitions are numbered differently. Go to Bootcamp folder and click on setup. I tried some times and different ways like deleting the partition and creating new than format but always appears the same error Feb 21, 2024 · If you can't install WIndows 10 because of the GPT partition error, start by converting your HDD to GPT or MBR. Feb 17, 2015 · The error messages during the restore indicate you used EFI initially, which means BCA created the MBR (and the supporting GPT entries), but by choosing the EFI boot, the MBR was ignored. Please see thesample Q&A as an example. Apr 22, 2016 · If one had Windows 7 installed in BIOS/MBR mode and upgraded to Windows 10, then the result would be Windows 10 running in BIOS/MBR mode using the "Boot Camp Support Software" intended for a Windows 7 installation. Oct 18, 2020 · Then when the process started it said it said the partition is in NTFS change ity to a FAT Do not use the Windows installer to delete/add partitions. Sep 17, 2023 · I recently installed the latest copy of Mac OS X and lost the Bootcamp Windows partition boot entry from the MBR (Master Boot Record). This partition still exists and has the original contents but it is not bootable. I then rebooted directly into the Windows installer (skipping Boot Camp altogether lest it mess things up again 👿). Use defaults for other questions (like partition codes). Mar 7, 2024 · I do notice now that the gpt command shows "Suspicious MBR at sector 0" now - unsure if that actually was there earlier today. Now it just hang May 19, 2016 · Use Boot Camp Assistant to safely remove Windows and the Windows partition from your Mac, restoring your startup drive to a single Mac partition. 2013-2014 models support EFI/GPT, but, by default, run Boot Camp in MBR/BIOS mode. I need to install Windows 10 on this hybrid MBR setup instead of an EFI/GPT setup bec Sep 5, 2025 · To eliminate the error, you need to download a new ISO file and repeat the installation in Boot Camp. The partition created by the BCA gives an error in the Installer saying the selected disk has an MBR partition table, and that on EFI systems, Windows needs to be installed on a GPT disk. Now, I get a kernal panic roughly 75% of the way through the boot process, and can only start in safe mode. I currently have OS X 10. The only values that need modifications are the Boot flags and step 10. 8. The solution in this case is to clear the hybrid MBR data. 2). So in effect the BOOTCAMP partition you have created is already in the GPT table (as well as in MBR) and your proposed changes are not needed. 🙂 Anyway, thanks! May 15, 2012 · I cloned the entire drive over using Clonezilla. Error: 0x000036B7” May 28, 2024 · The first partition should cover EFI partition given in the GPT. You'll have to use gdisk (free command line utility, obtainable from github) and use it to remove the hybrid MBR part to make it a pure GPT disk. May 18, 2019 · Intel Mac uses UEFI for its bootstrap. Jan 29, 2018 · 現行Macの起動ディスクはGPTという方式でパーティション情報が管理されていますが、bootcamp環境ではMBRという方式が使用されます。 そのため、bootcampアシスタントはGPTでパーティションを切りなおしたあとMBRをそれにあわせて設定しています。 Feb 14, 2015 · I asked about the popup, because my Boot Camp Assistant also has the "Install or remove Windows 7 or later version" check box grayed out. Dec 2, 2020 · Windows 10 Bootcamp GPT error, iMac 2011 High Sierra, please help! Jan 11, 2018 · The selected disk is of the GPT partition style. 9K subscribers 841 Aug 15, 2015 · Boot Camp Assistant had successfully created the Windows install USB key, and I was able to boot into the Windows installer. Sep 23, 2020 · Bootcamp install issue - no bootable device found / gpt/mbr conversion May 9, 2016 · I have an 2011 macbook which has been updated to EFI 1. The drivers Nov 26, 2020 · The selected disk has an MBR partition table. Reminder: Windows MUST be GPT/GUID based, OpenCore will not boot legacy installs Note 2: Using BootCamp utilities from macOS will erase the EFI/BOOT/BOOTx64. Aug 21, 2023 · Problems and Solutions for installing Windows with OpenCore Legacy Patcher Just my experience trying to install Boot Camp on a Legacy Mac. the selected disk has an MBR partition table. Jun 1, 2019 · If you can not boot to macOS Recovery and can boot Windows, then you can download and use GPT fdisk to print the contents of the GPT and MBR partition tables. If I use EFI, like I selected before, it will want a GPT disk format. Aug 17, 2025 · Fix MBR2GPT disk layout validation failed, cannot find OS partition, non system disk, cannot install new boot files, EFI system partition errors in Windows 11/10. This is where you hold down the option at startup until the icons appear. I am not sure when this changed, but this no longer happens under High Sierra (macOS 10. Later if i boot the EFI disk via pressing May 10, 2020 · The main goal of this post is to confirm that Windows 10 can be installed "the Apple way" with modified Bootcamp assistant on the HFS+ drive formatted as GPT, or on APFS drive formatted as GPT using gdisk to convert partitions to Hybrid MBR knowing already the formatting process of the Bootcamp Assistant. I used Bootcamp to create Windows installation media on a USB drive, partitioned the second SSD, then tried installing Windows through Bootcamp but couldn't get it to install. I had installed in many years ago and it was really easy. It turned out that adding the Linux partition had changed pushed BOOTCAMP out of the list, and made "Linux HD" the fourth partition. Apr 16, 2019 · Cómo modificar el Asistente Boot Camp para instalar Windows 10 en mi equipo «obsoleto» Si tu Asistente de Boot Camp, en su primera opción dice Crear un disco de instalación de Windows 7 sólo te dejará instalar este sistema, así que para instalar Windows 10 deberás modificar el Asistente para saltarte este absurdo bloqueo. Accept all other defaults that Gdisk offers. You may want to back up your information first, because removing the partition erases all of the data it contains. Mac, Windows, Linux all recognize MBR and GPT disks. The only MBR that’s present in the usual Mac configuration is the so-called protective MBR that’s intended to prevent the GPT from getting clobbered by the older MBR-only tools. I have been running Windows 10 through a Mac Mini Bootcamp partition for the past 3 years. I removed it whe Dec 8, 2014 · The BCA partitioning process which converts your hard drive into a Hybrid MBR disk, creates this GPT error because OS X sees the Hybrid GPT/MBR disk as GPT whilst Windows 8/8. \PhysicalDrive0 from an "Administrator: Command Prompt" window. Everything worked fine, except that my BootCamp partition was in the middle of the drive. I can still boot Lion without any issues, but can no longer boot my Win7 partition. I wanted to select 'Drive 0 Partition 3: BOOTCAMP' but it said the following : "Windows cannot be installed to this disk. The conversion with Windows built in tool will delete everything on your disk including recovery partition. Apple's system installers will refuse to install to an MBR disk, although Apple's EFI can boot (Mac OS, Linux, Windows) from an MBR only disk. You have two choices, either you manually choose EFI Boot using Alt/Option key or use GPT Fdisk to create a Hybrid MBR. 1] Disable EFI Boot Sources This fix worked for May 22, 2021 · This sometimes happens when the targeted disk is formatted with an MBR partition. 1 on a partition of the drive. exe or disk management to convert GPT to MBR, but you need to delete this disk to make it shown as unallocated space. And OpenCore itself does not support MBR based installs so the utility is useless to us Do you have enough room? From within OSX, shrink the volume to have enough room to install Windows 10 on, something like 50GB should be plenty with spare (latest Windows can be upwards of 25GB or more!). Solution? Feb 6, 2019 · Bootcamp - Windows 10 Installation fails due to GPT/MBR partition format. When the Boot Camp sequence boots to the Windows installer, the first thing you do is choose the drive you're installing Windows to and do a quick erase, which will make that partition NTFS. It took a series of steps to get the Bootcamp partition boot entry back into the MBR and so I decided to document the procedure. On EFI systems, Windows can only installed on GPT disks. When I initiate Bootcamp assistant it seems to work fine. So, you may be able to the the BCA to partition the drive, then use the flash drive to install Windows. 13. Nov 20, 2012 · If so, you converted the disk from a legal GPT disk into a hybrid MBR disk, which OS X sees as GPT and Windows sees as MBR. The selected disk has an MBR partition table. I thought it finally had it figured out but now it leaves me with “Cannot create EFI system partition. exe Bootcamp will start installing all your drivers one by one so give it time. After installing Boot Camp tools (version 6) I could work with all the drivers installed, except for audio. #macbook #macbookpro #macbookair Top Macbook Accessories: https://amzn. Insert usb and press any key. By removing the GPT & keeping the MBR, you are effectively destroying the OS X partition, precisely as warned against in the FAQ. UEFI expects GPT partitioning. The disk I'm using is a new "Samsung 850 EVO Series 250 GB" SSD. Jul 16, 2018 · I was able to download that ISO file through Bootcamp, but when I tried to boot it up and open Windows to install, I ran into the same problem as with the ISO file I was originally using - "no bootable device" when booting from Windows, and "can't install onto an MBR disk" when booting from EFI. I have tried using bootcamp to run Windows 8. ' Jun 29, 2019 · Rebuild MBR to match the new GPT information thus resetting the Hybrid MBR. But for me when I try to boot the usb it says 'no bootable device. Jun 2, 2011 · Normally, when you run Boot Camp Assistant, the hard drive's GPT is tweaked as such that an old-style Master Boot Record (MBR) is inserted, creating a hybrid partition table that is amicable to both Mac OS and Windows. I use fdisk or gdisk to correct differences manually. Bootcamp sets up a hybrid MBR to support Windows 7. . Jul 4, 2013 · Windows cannot be installed on this disk. This has been refered to as a full protected MBR. The problem arises when you try to install Jan 5, 2018 · Disk utility and Boot Camp Assistant will make sure that the changes in GPT table will be reflected in a MBR copy. Feb 17, 2008 · Any new on that? i created a Win8 USB Stick using Bootcamp with OSX 10. On EFI systems, Windows can only be installed to GPT disks". I simply adjusted the MBR to have the last entry point to BOOTCAMP again, thus "skipping" the Linux Feb 4, 2016 · Enter an MBR hex code (default 07): Press Enter/Return Set the bootable flag? (Y/N): Y Test 1 - Does Bootcamp Volume show up in Finder? Test 2 - Can you see files in Bootcamp Volume? Test 3 - Can you select Bootcamp in System Preferences -> Startup Disk? Test 4 - If Test 3 is successful, select Bootcamp and Click Restart. OS X at this time used a protected MBR [basically a wrapper] to hide the Mac's GUID-formatting from Windows. Dec 13, 2017 · 5 Previous versons of OS X and macOS automatically converted pure GPT drives to hybrid GPT/MBR format when the 2nd, 3rd, and/or 4th GPT partitions were formatted "MS DOS (FAT)" by the Disk Utility application or the diskutil command. Windows says "No audio output device is installed" and Apr 15, 2016 · I've updated bootcamp to Windows 10 which should support GPT with protective MBR without any hybrid tricks. Clonezilla appears to misinterpret this. I've looked through countless forums and feel like i've tried everything. Once you have an empty area, remove the partition completely and leave it unallocated, then try to make a new volume in that area with the Windows installer. " Here's where it gets frustrating (AGAIN) when I make the disk MBR by formatting it as ex-fat or vice versa, it simply switches to say cannot install onto a disk of the MBR partition type. And it worked. " Apr 24, 2016 · How to convert MBR to GPT to work around Windows bootcamp install error Mar 2, 2017 · The error indicates that the Hybrid MBR is missing. While it is possible to install UEFI Windows 10 OS in pre 2012 iMacs, these installations are sometimes met with hardware level incompatibilities due mainly Same issue here on an Early 2013 rMBP. 5 days ago · It seems the way to fix this is to reformat my drive to GPT styled partitions? I’ve tried using the built in MBR2GPT on windows and just running into problem after problem. The message is telling you that the drive on which you're trying to install Windows is set up to use a MBR partition tables, but that it must be set up a GPT one instead. The selected disk has a mbr partition table, On EFI system window can only be installed to GPT disks. I have 6 partitions on disk0 so hybrid MBR is also inconsistent with GPT and it's somewhat dangerous. I did a lot of trouble One caveat: Although a lossless conversion from GPT to MBR is theoretically possible, program bugs, power losses at inopportune times, user error, and other things can wipe out your partition table when you work at this low level. May 5, 2021 · 6) Considered trying to go back into MacOS and reset the MBR/GPT table to make the Bootcamp disk bootable (as done before), but decided to wait since there is likely more to the problem than just that. My wife wanted to play a Windows game, so I decided to reinstall Windows 10 on her 2012 iMac, process works fine, but when I get to the installation drive, I get this error: "Windows cannot be installed to this disk. Apr 9, 2022 · I had Bootcamp with Windows installed before on this mac. Insert the DVD and connect the external drive, restart the iMac and then immediately hold down the option key. Sep 28, 2025 · Owners of slightly more recent Macs may benefit from the video linked above as well. Dec 4, 2016 · After you get the MBR vs GPT error, switch to OS X and run GPT Fdisk (gdisk) and see the second set of Gdisk steps in Re: El Capitan has deleted my bootcamp windows partition as a reference. If the disk is MBR only, it will lack an EFI System partition, and you won't be able to do firmware updates on your computer. Now when Win 8 installer have EFI boot mode, we actually don't need Bootcamp utility at all. 2nd drive an internal 2TB HDD which is formatted to exFat (this is used for storage so I can access data on both OS's) May you advise? Thanks! Mar 9, 2025 · Windows cannot be installed to this disk, The selected disk has an MBR partition table, On EFI systems, Windows can only be installed to GPT disks. m0vb9 uecjh hwmfq fflh a2s2 ncklh mzbveuo wnyctn ji4 skaf