[gentoo-user] readcd -clone and iso9660 ?

[gentoo-user] readcd -clone and iso9660 ?

[capsel]

I made a copy of 6 cdroms with
readcd -clone f=iso -noerror retries=1
and only two of them I can
mount -t udf,iso9660 ./iso /mnt/cdrom -o loop

These two are a copy of a "protected" game CD and others are images of
solaris CDs.

I can mount solaris' CDs with
mount -t iso9660 /dev/cdrom /mnt/cdrom
but I can't mount images of them.

Is there any way to bypass problem with solaris CDs or is there any
tool to convert images made by readcd -clone to iso image?

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Re: [gentoo-user] readcd -clone and iso9660 ?

[Neil Bothwick]

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On Wed, 14 Dec 2005 16:13:59 +0100, capsel wrote:

> Is there any way to bypass problem with solaris CDs or is there any
> tool to convert images made by readcd -clone to iso image?

Have you tried creating the images directly, instead of using readcd

cat /dev/cdrom >image.iso


-- 
Neil Bothwick

"What I need is a list of specific unknown problems we will encounter."

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Re: [gentoo-user] readcd -clone and iso9660 ?

[capsel]

2005/12/14, Neil Bothwick <neil@digimed.co.uk>:
> On Wed, 14 Dec 2005 16:13:59 +0100, capsel wrote:
>
> > Is there any way to bypass problem with solaris CDs or is there any
> > tool to convert images made by readcd -clone to iso image?
>
> Have you tried creating the images directly, instead of using readcd
>
> cat /dev/cdrom >image.iso
>
Yes, it works, cp /dev/cdrom image.iso too. But some CDs have errors
(scratches) that cp/cat can't handle.
Why readcd makes once iso and once "not iso" compatible image files?

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Re: [gentoo-user] readcd -clone and iso9660 ?

[Michael Kjorling]

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On 2005-12-14 17:45 +0100, capsel@gmail.com wrote:
> Yes, it works, cp /dev/cdrom image.iso too. But some CDs have errors
> (scratches) that cp/cat can't handle.

Tried dd with `conv=noerror'?

-- 
Michael Kjörling, michael@kjorling.com - http://michael.kjorling.com/
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Re: [gentoo-user] readcd -clone and iso9660 ?

[capsel]

2005/12/14, Michael Kjorling <michael@kjorling.com>:
> On 2005-12-14 17:45 +0100, capsel@gmail.com wrote:
> > Yes, it works, cp /dev/cdrom image.iso too. But some CDs have errors
> > (scratches) that cp/cat can't handle.
>
> Tried dd with `conv=noerror'?

Not yet, but I just noticed that without -clone option image is iso
compatible (at least for solaris cd1) so maybe dd conv=noerror would
work.

And I still wish to mount "cloned" image like with daemon-tools on windows...
Is there any solution to this? (except not mounting them)

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dd isos (was: Re: [gentoo-user] readcd -clone and iso9660 ?)

[Boyd Stephen Smith Jr.]

On Wednesday 14 December 2005 12:05 pm, Michael Kjorling wrote:
> On 2005-12-14 17:45 +0100, capsel@gmail.com wrote:
> > Yes, it works, cp /dev/cdrom image.iso too. But some CDs have
> > errors (scratches) that cp/cat can't handle.
>
> Tried dd with `conv=noerror'?

I've read that dd actually has problems reading from cdroms and isos 
produced with something like dd if=/dev/cdrom of=my.iso conv=noerror 
would be invalid.  Can anyone confirm / deny, preferably with some sort 
of reference or test.

-- 
Boyd Stephen Smith Jr.
bss03@volumehost.com
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Re: dd isos (was: Re: [gentoo-user] readcd -clone and iso9660 ?)

[Neil Bothwick]

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On Wed, 14 Dec 2005 12:36:50 -0500, Boyd Stephen Smith Jr. wrote:


> I've read that dd actually has problems reading from cdroms and isos 
> produced with something like dd if=/dev/cdrom of=my.iso conv=noerror 
> would be invalid.  Can anyone confirm / deny, preferably with some sort 
> of reference or test.

I've never tried with conv=noerror, but dd has worked fine for me on
several occasions when extracting ISO images from data CDs and DVDs.

I don't use it any more because it is slow, cp and cat give the same
result and are faster.


-- 
Neil Bothwick

ERROR #0915: MONITOR NOT PRESENT. CLICK ON OK TO CONTINUE.

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[gentoo-user] Re: dd isos

[Harald Arnesen]

Neil Bothwick <neil@digimed.co.uk> writes:

> On Wed, 14 Dec 2005 12:36:50 -0500, Boyd Stephen Smith Jr. wrote:
>
>
>> I've read that dd actually has problems reading from cdroms and isos 
>> produced with something like dd if=/dev/cdrom of=my.iso conv=noerror 
>> would be invalid.  Can anyone confirm / deny, preferably with some sort 
>> of reference or test.
>
> I've never tried with conv=noerror, but dd has worked fine for me on
> several occasions when extracting ISO images from data CDs and DVDs.
>
> I don't use it any more because it is slow, cp and cat give the same
> result and are faster.

dd is not slower than cp/cat if you increase the block size from the
default 512 bytes.
-- 
Hilsen Harald.

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Re: [gentoo-user] Re: dd isos

[Neil Bothwick]

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On Thu, 15 Dec 2005 11:29:55 +0100, Harald Arnesen wrote:

> > I don't use it any more because it is slow, cp and cat give the same
> > result and are faster.
> 
> dd is not slower than cp/cat if you increase the block size from the
> default 512 bytes.

Increasing the block size does make it /almost/ as fast as cat, but then
it takes longer to type the command :)


-- 
Neil Bothwick

I am Barney of Borg: I love you. You love me. We're a happy Borg.

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Re: [gentoo-user] Re: dd isos

[Hani Duwaik]

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On 12/15/05, Neil Bothwick <neil@digimed.co.uk> wrote:
>
> On Thu, 15 Dec 2005 11:29:55 +0100, Harald Arnesen wrote:
>
> > > I don't use it any more because it is slow, cp and cat give the same
> > > result and are faster.
> >
> > dd is not slower than cp/cat if you increase the block size from the
> > default 512 bytes.
>
> Aside from speeding things up, what effect does increasing the block size
have (does it in any way alter the resulting ISO?)?

Just wondering...

-Hani


--
"If, of the many truths, you select only one and follow it blindly, it will
become a falsehood, and you a fanatic."

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Re: [gentoo-user] Re: dd isos

[Uwe Thiem]

On 15 December 2005 23:56, Hani Duwaik wrote:
> On 12/15/05, Neil Bothwick <neil@digimed.co.uk> wrote:
> > On Thu, 15 Dec 2005 11:29:55 +0100, Harald Arnesen wrote:
> > > > I don't use it any more because it is slow, cp and cat give the same
> > > > result and are faster.
> > >
> > > dd is not slower than cp/cat if you increase the block size from the
> > > default 512 bytes.
> >
> > Aside from speeding things up, what effect does increasing the block size
>
> have (does it in any way alter the resulting ISO?)?

Nope.

Uwe


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