I am trying to make a bootable USB with the dd command since Boot Camp does not work. If I execute this command:
sudo dd if=Win10.iso of=/dev/disk1 bs=1m
I get a disk formatted as Universal Disk Format with a GUID partition scheme making it unbootable. The way I changed it to Master Boot Record (FDisk) partition scheme was to erase the failed USB contents, change it to FDisk, and run the dd command with disk1s1 instead of disk1 (disk1s1 was the identifier of the only partition on the USB).
What that has done was made an unmounted partition called disk1s1, formatted in FAT and with the FDisk partition scheme, but it is unmountable and I cannot boot from it. When I try mounting it, nothing happens, and the terminal command output is Volume on disk1s1 failed to mount
. I cannot repair disk and Verify disk says Invalid BS_jmpBoot in boot block: 000000
As far as I can remember, Ubuntu's bootable USB showed similar behavior with the unmountable disk, but it was detectable by rEFInd.
UPDATE:
The error message I get in VirtualBox is:
VD: error VERR_NOT_SUPPORTED opening image file '/Users/username/RawWinDisk.vmdk' (VERR_NOT_SUPPORTED).
VD: error VERR_NOT_SUPPORTED opening image file '/Users/username/RawWinDisk.vmdk' (VERR_NOT_SUPPORTED).
Failed to open image '/Users/username/RawWinDisk.vmdk' in read-write mode (VERR_NOT_SUPPORTED).
Failed to attach driver below us! Not supported. (VERR_NOT_SUPPORTED).
AHCI: Failed to attach drive to Port0 (VERR_NOT_SUPPORTED).
I am using OS X 10.9.5 (Mavericks), and I have a 13-inch, Mid 2012 MBP
Best Answer
Let me know if anything goes wrong! I have tried to update everything for the latest version of VirtualBox, but I may have messed up somewhere...
The method I use relies on VirtualBox for its operation. Follow these steps:
diskutil list
. From the list of disks, make a note of the disk identifier in the last column that belongs to the partition you created for Windows. We will need this in the next step.sudo chown $USER /dev/disk#s#
. Replace disk#s# with the identifier from earlier. Enter your password and push return. Also runsudo chown $USER /dev/disk#s1
. Use the same identifier, but replace the last number with a 1. Also runsudo chown $USER /dev/disk#
using the first half of your identifier (minus the s# part).diskutil unmount /dev/disk#s#
using your identifier.VBoxManage internalcommands createrawvmdk -filename ~/RawWinDisk.vmdk -rawdisk /dev/disk# -partitions 1,#
. Replace "disk#" with the appropriate first half of the identifier from earlier, and replace the second # sign with the last number in your identifier.diskutil unmount /dev/disk#s#
, using your identifier.Make sure you update your BootCamp with Apple Software Update once you have BootCamp installed on the Windows side. These are technically Windows 8.1 drivers, which should work well enough for you to at least connect to the internet and get the latest version.