Date: Sat, 2 Oct 2010 14:10:41 +0300 From: Thanassis Tsiodras <ttsiodras@gmail.com> To: freebsd-emulation@FreeBSD.org Subject: VirtualBox can't boot a Linux residing in the same hard disk - operation not permitted Message-ID: <AANLkTikFn3dbkWXPFj0-zGQzhJD=W7sUFTUj1Mu8P_WK@mail.gmail.com>
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Hi, everyone.
I have a disk where I have installed both Linux and FreeBSD, under
different partitions. From FreeBSD, I wanted to use VirtualBox to boot
my Linux, which resides in a different partition of the same disk. I
installed the latest Virtualbox from ports (3.2.8, r64453), and I
tried to create a raw-access device:
bash$ sudo VBoxManage internalcommands createrawvmdk -filename
~/.VirtualBox/WholeDisk.vmdk -rawdisk /dev/ad11
but unfortunately, I got...
ERROR: VMDK: could not open raw disk file '/dev/ad11'
and truss revealed that:
bash$ sudo truss VBoxManage internalcommands createrawvmdk -filename
~/.VirtualBox/WholeDisk.vmdk -rawdisk /dev/ad11 2>&1 | grep ad11
open("/dev/ad11",O_RDONLY,0600) = 8 (0x8)
open("/dev/ad11",O_RDWR,0600) ERR#1 'Operation
not permitted'
So it seems that VBoxManage attempted to get read-only access to the
device, succeeded, then attempted to get RW access, and failed.
I tried this under a root login too (i.e. not via sudo), just in case. No go.
Security wise, I am at:
bash$ sysctl kern.securelevel
kern.securelevel: -1
Any ideas on what to try?
Note that the reverse works: Linux has no problem giving VBoxManage
raw access to the disk, even though the ext4 partition resides in the
same disk.
--
What I gave, I have; what I spent, I had; what I kept, I lost. -Old Epitaph
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