Bootcamp Windows 10 Installation - No boo…

Bootcamp Windows 10 Installation - No bootable device -- insert boot disk and press any key Hello everyone, I have an 13" macbook pro mid 2012 which runs MacOS Catalina. I wanted to dual boot my 750GB hard drive (not SSD) to run Bootcamp Windows 10 Pro and MacOS. I went through the Bootcamp assistant, and it all went smoothly. It installed the ISO image onto my HP V210W 16GB flash drive, along with the support files. Then, the computer restarted. I have installed Bootcamp on my macbook Pro before so I know what should have come up. The Windows 10 Setup screen should have showed up on the macbook pro Screen after restarting. HOWEVER, when the macbook pro restarts, it shows the normal white screen, and then it shows a black screen that says "No bootable device -- insert boot disk and press any key". I am not sure why this happened. So next I try to circumvent this issue by restarting, holding Alt/Option, and it brings up the boot order page. The options are "Macintosh HD", "Windows", and "EFI". I select the Windows option. It brings me back to my original problem with the black screen and the "no bootable device" message. Next, I try to instead start up with the EFI option. This successfully enters the Windows setup, but when I progress through all of the steps, at the step where I select which partition to install Windows on, it tells me that "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." 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. If I use EFI, like I selected before, it will want a GPT disk format. So now I am officially stuck. I have no clue what to do, and I have researched everywhere on this problem. I do not have anything but the keyboard, mouse, and USB flash drive connected to the macbook pro. I tried with different USB 2 flash drives but no use. If anyone could help me with this, that would be great. Thanks.

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No bootable device - bootcamp Windows 10 Hello everyone, I've seen the problem in the discussions but the answers don't seem to help me. I'll quickly explain: MBP mid '12, 512 HDD and 8 RAM on macOS Catalina and I try to install Windows 10 64bit through Boot Camp assistent. I went through the Boot Camp assistant, and it all went smoothly. It installed the ISO image onto my Buffalo HDD 2TB and again on my Toshiba 500GB. Then, the computer restarted. When the MBP restarts, it shows the normal white screen, and then it shows a black screen that says "No bootable device -- insert boot disk and press any key". I am not sure why this happened. So next I try to circumvent this issue by restarting, holding Alt/Option, and it brings up the boot order page. The options are "Macintosh HD", "Windows", and "EFI". I select the Windows option. It brings me back to my original problem with the black screen and the "no bootable device" message. Next, I try to instead start up with the EFI option. This successfully enters the Windows setup, but when I progress through all of the steps, at the step where I select which partition to install Windows on, it tells me that "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." 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. If I use EFI, like I selected before, it will want a GPT disk format. I read somewhere this problem is due using a USB3 instead of USB2 but I'm 99% sure I only have USB2's. (I was told to check the speed = 480 Mb/s) Any ideas? (might it be Windows 32bit vs 64bit?) Thanks in advance

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Installing Windows 10 on mid-2012 MBP I'm trying to install Windows 10 on my MacBook using Bootcamp. I've followed several tutorials including the Apple tutorial, but I'm running into issues. I have a brand new Crucial 500gb SSD running a fresh new version of Catalina. I've downloaded the Windows 10 ISO file from Microsoft. I am using a 32gb PNY USB 2.0 flash drive. I start up Bootcamp, it writes the files to the flash drive from the ISO, downloads Apple support software, and partitions the drive. I did a 60/40 partition split, between the MacOS and Windows. I click continue, I have to put in my password a few times, the process completes, and the MacBook automatically restarts to a black screen saying "No bootable device -- insert boot disk and press any key". I press a few key and nothing happens, so I restart the MacBook and hold ALT which brings me to the boot screen, to choose which drive I want. There are 3 available options, MacBook, Windows, and EFI Boot. If I select Windows, it takes me back to the black screen saying "no bootable device". If I select EFI Boot, it brings me to a Windows installation screen! Sounds good- I choose Windows 10 Home, I agree to the license agreement, I choose English and US keyboard, and then it takes me to a screen that lays out 3 partitions, and asks "where do I want to install windows? " I select the partition labeled BOOTCAMP, however that partition along with the other 2 all say "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." One tutorial said to format the BOOTCAMP partition within this window, however when I do that it still doesn't change anything. So I can't go any further than this screen. I've tried restoring everything back to normal, and going through the whole process again, same results every time. I'm going to try again with a Kingston 16gb 3.0 flash drive and see if that makes any difference. Any thoughts?

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Bootcamp Windows 10 Installation - No bootable device -- insert boot disk and press any key

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