I have an ISO file I want to use to install Windows 7 in VirtualBox. The problem is this file is not bootable. Is there any command line tool to make a non-bootable ISO file bootable?
The ISO file is a Windows 7 installation CD/DVD. I created a new virtual machine and attached the ISO file to the corresponding virtual CD/DVD reader device. I'm pretty sure I'm doing this step right because it worked just fine with another ISO file I have.
When I run the machine with this ISO file attached I see the "no bootable medium found" error.
I suspect the cause of the problem is that the ISO file I'm interested in is not bootable. When I run the
file UNIX command to see the type of the file, this is the output:
file windows7.iso windows7.iso: ISO 9660 CD-ROM filesystem data 'CDROM'
However, if I run the same command agains the "good" ISO file it says "(bootable)":
file W7X64.OEM.ESD.en-US.Oct2016.iso W7X64.OEM.ESD.en-US.Oct2016.iso: ISO 9660 CD-ROM filesystem data 'W7X64.OEM.ESD.EN-US.OCT2016' (bootable)