5/10/2021 0 Comments No Bootable Device Mac Fix
Can I just use the external optical drive with Windows 7 DVD to start installation I might not prefer buying a new USB drive because it functions properly in normal use.However, when the Mac mini automatically rebooted, it showed the message No bootable device, insert boot disk and press enter.I tried to switch off the mac mini and hold down the altoption button when I turned on it again, but no any menu appeared (only the same error message was displayed).I also did some research on internet and found some experts indicated that the USB drive is using MBR (for old BIOS) rather than GPT, and UEFI only recognizes GPT, so it isnt bootable.
No Bootable Device Fix Windows 7 DVD ToIs that exactly the problem The USB drive was formatted by Boot Camp Assistant actually, why would this happen Now I dont know how to fix this problem. ![]() Boot Camp and the attached drivers manually from my USB flash drive into my Windows 7. I still had to use Startup Manager to boot into Windows every time until I installed Boot Camp driver. I might not be confident to try again without your suggestions and comments. ![]() Mac models prior to Late 2013 models will use MBR for the destination disk. If you see a No bootable device error, either you are using a USB3 flash drive or your ISODVD source for Windows is corrupt. In some rare cases, the rightmost USB port in the back of the Mini when facing the Mini works, but others may not. This usually requires an SMC Reset). If the issue was MBR v GPT, the Windows installer would need to start properly, and after you picked the designated partition, the MBR v GPT error would be shown by the Windows Installer. I also checked the USB drive on other Windows PC and found the files can be read properly. If it is really corrupted, how can I solve the problem At least I want to know how I can get back to the OS X. In some cases, switching to a different brand also seems to address the issue. The results show that the USB version is 2.0, and data reading is normal. Does CommandOptR boot into Internet Recovery Reference - OS X: About OS X Recovery - Apple Support. After I selected the startup disk again from file menu in the OS X Recovery System, I can boot into OS X now. ![]() Bootcamp created a blank FAT32 partition for me to install Windows, but my mac cannot boot from the USB drive. You Mini supports booting from either an external Optical drive or a USB drive that BCA creates. It may be an issue with you USB being a USB3 not a USB2 device or the brand of the device. I specifically bought SanDisk Cruzer USB2 flash drives for this purpose. Apple rewrote the Bootcamp 5.1 linked article in this image, but used to explicitly document what models would support both options.
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