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From: BoyBlue on 17 Jan 2009 16:33
No.
Software able to use an ISO image directly obviously has to have built-in
functions that enable it to open, read, and, up to a point, make use of the
functionalities found on the ISO.

But if the app trying to install from the CD (or DVD, as is the case here)
rigoroulsy checks whether it's being launched from a CD-DVD player, it will
most likely fail since it obviously won't find the markers it's looking for.

This is a typical demonstration of the saying that clains that "The proof is
in the pudding": Trying to install Windows 7 directly from the ISO does NOT
work, whereas mounting the ISO in a virtual drive WORKS flawlessly.

You can keep on looking for a technical explanation if you want, but you're
likely to only waste a lot of your time. This is not a bug nor a deficiency.
It is programmed behaviour by the makers of the Windows 7installer program
(err.... I think....;>).

From: Bill Grant on 17 Jan 2009 17:37


"BoyBlue" <BoyBlue(a)discussions.microsoft.com> wrote in message
news:DF67BAB4-695B-4AC9-9F91-2B4A6C566BF7(a)microsoft.com...
> No.
> Software able to use an ISO image directly obviously has to have built-in
> functions that enable it to open, read, and, up to a point, make use of
> the
> functionalities found on the ISO.
>
> But if the app trying to install from the CD (or DVD, as is the case here)
> rigoroulsy checks whether it's being launched from a CD-DVD player, it
> will
> most likely fail since it obviously won't find the markers it's looking
> for.
>
> This is a typical demonstration of the saying that clains that "The proof
> is
> in the pudding": Trying to install Windows 7 directly from the ISO does
> NOT
> work, whereas mounting the ISO in a virtual drive WORKS flawlessly.
>
> You can keep on looking for a technical explanation if you want, but
> you're
> likely to only waste a lot of your time. This is not a bug nor a
> deficiency.
> It is programmed behaviour by the makers of the Windows 7installer program
> (err.... I think....;>).
>

Sorry to say this, but that is mainly rubbish. An ISO is an image file
and, to use it, a program must have the ability to handle that. All of that
is correct.

VPC, Virtual Server and Hyper-V all have this ability. You can use a
..iso file as a virtual CD/DVD, just as you use a .vfd as a virtual floppy
disk. In VPC you can simply drag an iso file on to the cd drive icon at the
bottom of the virtual machine window, just as you can drag a .vfd file on to
the floppy drive icon.

If this does not work in your case, then it is a local problem on your
system. It is certainly not the general rule. I have installed Win7 beta on
both VPC and Hyper-V from the downloaded .iso. I always use .iso files to
install an OS in a virtual machine. It is faster and more reliable than
loading from a CD/DVD.

From: Steve Jain [MVP] on 17 Jan 2009 19:33
On Sat, 17 Jan 2009 13:33:00 -0800, BoyBlue
<BoyBlue(a)discussions.microsoft.com> wrote:

>No.
>Software able to use an ISO image directly obviously has to have built-in
>functions that enable it to open, read, and, up to a point, make use of the
>functionalities found on the ISO.
>
>But if the app trying to install from the CD (or DVD, as is the case here)
>rigoroulsy checks whether it's being launched from a CD-DVD player, it will
>most likely fail since it obviously won't find the markers it's looking for.
>
>This is a typical demonstration of the saying that clains that "The proof is
>in the pudding": Trying to install Windows 7 directly from the ISO does NOT
>work, whereas mounting the ISO in a virtual drive WORKS flawlessly.
>
>You can keep on looking for a technical explanation if you want, but you're
>likely to only waste a lot of your time. This is not a bug nor a deficiency.
>It is programmed behaviour by the makers of the Windows 7installer program
>(err.... I think....;>).

You're incorrect here. I've installed Windows 7 directly from the ISO
mounted in VPC and VMWare's "built-in" virtual DVD drives.
Others here have as well.

--
Cheers,
Steve Jain, Virtual Machine MVP
http://vpc.essjae.com/
From: Mark Rae [MVP] on 17 Jan 2009 21:53
"BoyBlue" <BoyBlue(a)discussions.microsoft.com> wrote in message
news:DF67BAB4-695B-4AC9-9F91-2B4A6C566BF7(a)microsoft.com...

> Trying to install Windows 7 directly from the ISO does NOT work

Or, put another way, it works perfectly - I've done it several times now...


--
Mark Rae
ASP.NET MVP
http://www.markrae.net

From: -=ed on 18 Jan 2009 08:26
Experimenting, I upped the priority of VPC from normal to high normal and
then to high.

In high, I got decomp to rather quickly go as far 34% before getting the
same error message. The VHD is 64GB, so I don't understand what is causing
the files to be missing at any given time in the decompression.

This confuses me, as VPC should have one core all to itself, so I can't
understand how it could be so priority sensitive with a lightly loaded
machine.

ZAlarm and PCDoctor show no infections, so I don't know what could be
causing this situation.

Any thoughts or suggestions? It may certainly be something peculiar to my
machine, so any ideas on what it might be?
--
..
-=ed
..



"-=ed" wrote:

> dell Inspiron 530, quad 2.6ghz, 3gb, XP SP3 32bit, VPC 2007 sp1 XP guest,
> networked
> -------------------------------------------------------------------------------------
>
> When I try to install Windows 7 demo, I get the error message:
>
> Error 0X80070570 Windows cannot install required files.
> The filemay be corrupt or missing.
> Make sure all files required for installation are available and restart the
> installation.
>
> I connected to the ISO and ran the install. It stalls in phase 2 after it
> says it has copied all the files, half-way thru decompression stage. I have
> run the installation several times.
>
> I have downloaded the distrib twice and have gotten the same results with
> both copies.
>
> VPC2007sp1 is running on the machine correctly. I stopped the VMachine
> from running during the install.
>
> Any idea what I am doing wrong?
>
> Thanks,
>
> ed
> --
> .
> -=ed
> .
>
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