Date: Sun, 24 Jul 2011 23:18:39 -0700 (PDT) From: Joe Sciulli <jsciulli2003@yahoo.com> To: freebsd-emulation@freebsd.org Subject: mount vdi Message-ID: <1311574719.49706.YahooMailClassic@web122313.mail.ne1.yahoo.com> In-Reply-To: <20110721081726.GR17489@deviant.kiev.zoral.com.ua>
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Is it possible to mount virtualbox vdi file on the FreeBSD host?=A0 This ap= pears to be doable on windows and linux hosts, which basically is done in t= wo steps: 1. find offset in the image. 2. mount the image with that offset. I'm trying to do the same thing on FreeBSD, and found the undocumented and = deprecated command still works: VBoxManage internalcommands dumphdinfo freebsd_home.vdi I got the following for the virtual disk image holding the /home (no root h= ence no MBR) disk for a FreeBSD guest: Header: offBlocks=3D4096 offData=3D28672 But since the mount command in FreeBSD doesn't support "offset", I have to = dd the image into another file.=A0 I believe the default "block" size in dd= is 512 bytes, so the offset 28672 (bytes?) is 56 blocks.=A0 So I used the = command: dd skip=3D56 if=3Dfreebsd_home.vdi of=3Dfreebsd_home_56.vdi Then attempt to mount it: mdconfig -a -t vnode -f /tmp/freebsd_home_56.vdi -u 0 mount /dev/md0 /tmp/aaa/ mount -t cd9660 /dev/md0 /tmp/aaa/ unfortunately both the above two mount commands failed with "Invalid argume= nt".=A0 I tried skip=3D28672 to no avail as well.=A0 Anything did I do wron= g? Or is there any other solution in FreeBSD host to mount virtualbox vdi file= ?=A0 There appears to be a "vdfuse" but is not ported yet, and the attempt = to port appears to be not for VirtualBox 4.
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