Opening dmg files

Shane Ambler FreeBSD at ShaneWare.Biz
Wed Nov 18 13:30:27 UTC 2015

On 18/11/2015 10:19, R Skinner wrote:
> On 18/11/2015 00:25, Shane Ambler wrote:
>> On 17/11/2015 21:39, R Skinner wrote:
>>> I'm checking out downloading the video files for the FreeBSD kernel
>>> course offered by McKusik, and I downloaded an encrypted file which I
>>> was able to decrypt, but I still can't actually play it. I don't believe
>>> I would have downloaded 650Mb of nothing, so how do I play it?
>>> The format is .dmg which is apparently a mac cd format, but I can't view
>>> the files in it, and mplayer and others don't recognise it either.
>> It has been a few years but I recall .dmg being like an .iso but with
>> hfs+ structure. Try using it as a file backed mdconfig device and mount
>> using sysutils/hfsutils
>> sysutils/hfsexplorer is a java app that claims to read most dmg images.
>> You could also contact McKusik and suggest a bsd friendly version.
> In theory, this struck me as a great idea - I installed hfsexplorer and
> tried opening the file. UNKNOWN type!
> I would suggest that this should work in most cases, so for anyone
> looking for an answer on standard dmg mac files: this is probably it.
> I just have no idea what this file is supposed to be. In his
> instructions it says it should play in a software dvd player or just
> burn to dvd, but so far none of that has worked. I'll admit I don't burn

If it is a DVD master containing .vob files - maybe mount_udf from an
mdconfig device.

> dvd's lately as there doesn't seem much point - I'm always trying to rip
> them to the hdd anyway, and I don't even know where I could buy them
> these days any more. The dvd burners I do have collect dust, and my new
> systems don't even have them... its like sd and the cloud is the future
> maan!
> The irony of it is that this course is meant to promote FreeBSD and its
> development, and yet I can't seem to use the file on it! I think I will
> have to try contacting him, but I'm not sure thats on the site...


FreeBSD - the place to B...Software Developing

Shane Ambler

More information about the freebsd-questions mailing list