#Mac no bootable device fix mac os x

b) In the macOS Utilities window, select Disk Utility, then click Continue. How To: Create a Bootable Install USB Drive of Mac OS X 10.11 El Capitan How To: Create a Bootable Install DVD or USB Drive of OS X 10. 1) after turning on the Mac pressing x-button which should force booting into the OS X partition. Release them when the Apple logo appears. I came home & restarted my computer again holding the option key, selected the Windows CD & the same error comes up! I can't imagine having 2 bad copies of Windows 7. To fix the No Bootable Device error, you can try repairing the Boot Camp partitionsteps are as follows: a) Turn on your Mac, then immediately press and hold Command + R keys. So I went to the place I bought it & they gave me another copy. So then I talked to an Apple Senior Tech & he told me the Windows disc had to be damaged or no good. I click on the Windows CD & it goes to another black screen, but now up in the upper left hand corner it says CDBOOT: Couldn't find BOOTMGR. Select your Mac OS X partition/hard disk. Go into the System Prefs, look for Startup disk. Then you click on your Macintosh HD/whatever you name it. Hi guys, when I try to instal windows i get no bootable device error, i could retourn to mac ant all that stuff, but I have a Bootcapf partition totally empty, I can make the disk an unique one again, but I still have my prob. The screen comes up with the choice to pic MacHD or the Windows CD. Press down the alt/option key AS SOON AS THE SCREEN LIGHTS, until a hard disk logo appears. Press F5 to run onboard diagnostics. So then I read on further in the bootcamp instructions & it said if I had problems restart the computer holing the option key, which I did. No bootable device strike F1 to retry boot, F2 for setup utility. But it comes up with a black screen with a flashing prompt up in the upper left corner.

Then I chose the partition size, put in my Windows 7 disc, it partitioned & rebooted, and I thought it was supposed to boot up to the Windows installation.

#Mac no bootable device fix software

I downloaded the support software to a USB flash drive using bootcamp, and that all went fine. I'm downloading Windows 7 Professional from a disc.