MacOS – VirtualBox VERR_ACCESS_DENIED

macosvirtualbox

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.

Best Answer

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:

Reboot your Mac into Recovery Mode by restarting your computer and holding down Command+R until the Apple logo appears on your screen.

Click Utilities > Terminal.

In the Terminal window, type in csrutil disable and press Enter.

Restart your Mac.

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MacOS – Problem with startup `rc.local` script

I was using those commands for VirtualBox in rc.local, and I ran into the same problem. I don't if this is the right way to do this, but it works for me.

I created /Library/LaunchDaemons/local.localhost.startup.plist containing the code below. It runs the rc.local script once at start up.

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>Label</key>             <string>local.localhost.startup</string>
    <key>Disabled</key>          <false/>
    <key>RunAtLoad</key>         <true/>
    <key>KeepAlive</key>         <false/>
    <key>LaunchOnlyOnce</key>    <true/>
    <key>ProgramArguments</key>
        <array>
            <string>/etc/rc.local</string>
        </array>
</dict>
</plist>

MacOS – I’m not able to re-size a HD Partition to utilize all its free space, how can I fix this

The Recovery Partition is created during OS X installation.

Normally that partition is hidden unless you are using the Debug mode in Disk Utility to show all partitions.

In other words, it should not be showing in your system as it is.

Turn off the show all partitions (in Debug menu), and check.

If it is still there back it up (for safety) then delete it.

Just in case you delete the original Recovery partition, you can get it back using the Internet recovery, or from reinstalling the OS X.

The way it should look like (notice the EFI and Recovery are grayed out but still showing on the side, since I have the Debug show all partition ON).

partitions

Best Answer

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MacOS – Problem with startup `rc.local` script

MacOS – I’m not able to re-size a HD Partition to utilize all its free space, how can I fix this

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