5

I am trying to install Windows 10 on a partition with this Virtualbox method, where I create a vmdk link to the partition and use it as the drive, run the installer and then reboot.

This worked fine on a device running Mavericks, but on one with El Capitan does not work, and prints out a VERR_ACCESS_DENIED

VBoxManage internalcommands createrawvmdk -filename ~/RawWinDisk.vmdk -rawdisk /dev/disk0 -partitions 1,4

This is supposed to make the vmdk file. I did do a chown to /dev/disk0, disk0s1 and disk0s4. I also tried a chmod -R 777 on them to see if it helped, but it still did not work. Running command as sudo does not work either.

  • 1
    guessing you hit SIP. Did you try with it off? – Tetsujin Nov 27 '15 at 21:43
  • @Tetsujin Please explain what SIP is. I didn't yet meet up with such term – TheBro21 Nov 27 '15 at 21:44
  • System Integrity Protection - see apple.stackexchange.com/questions/208478/… – Tetsujin Nov 27 '15 at 21:45
  • I'm trying to reproduce this on 5.0.10 r104061 - I don't seem to be wrapping my brain around why the Mac raw devices are being used by the guest OS. – bmike Nov 27 '15 at 21:48
  • 1
    Ah, glad it helped - putting together a [rather short] answer :) – Tetsujin Nov 28 '15 at 14:19
4

I think you may be hitting El Capitan's System Integrity Protection [SIP] which is preventing access..

Borrowed from How do I disable System Integrity Protection (SIP) AKA "rootless" on OS X 10.11, El Capitan? ...

Apple's documentation covers disabling SIP, About System Integrity Protection on your Mac.

An article on lifehacker.com lists these steps:

  1. Reboot your Mac into Recovery Mode by restarting your computer and holding down Command+R until the Apple logo appears on your screen.
  2. Click Utilities > Terminal.
  3. In the Terminal window, type in csrutil disable and press Enter.
  4. Restart your Mac.
1

in case this helps anyone, I have been booting my bootcamp partition via vbox since probably OSX Lion. when SIP came along, I had to adjust my vbox run script to do the chmod's as described elsewhere, but today I had to re-create my pointer VMDK (VBoxManage internalcommands createrawvmdk...) because my drive numbering changed (/dev/diskN) and I could not without temporarily disabling SIP... no chmod'ing would make a difference. After creating the new VMDK, I reenabled SIP, and am back to chmod'ing before virtual startup/after each host reboot. HIH

0

Try:

sudo chown $(USER) /dev/disk0s4
sudo chmod 660  /dev/disk0s4
chmod 600 ~/RawWinDisk.vmdk

after each MacOS restart I need again chown /dev/disk0s4 to start Windows VM normally.

Your Answer

By clicking "Post Your Answer", you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.