Re: [expert] Bad CD?

[Mike Leone]

> Michael Leone wrote:
> >
> > I've made many Linucx CDs of various distros using ISO images under
> > Windows, using NT and Win2K, and Adaptec EasyCD Creator and Nero, and
> > never had a failed CD. YMMV.
> > (I've made Mandrake, RedHat, Debian, OpenBSD, Corel, others)
>
> How do you check that a just-burned CD is correct?  With Linux it's

I install Linux from the CD just burned - I've installed all the OSes listed
above from CDs I've burned myself, from ISO images downloaded off the 'net.
Haven't had a problem with any file on any of them yet.






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Re: [expert] Bad CD?

[Randy Kramer]

Ron Stodden wrote:
> How do you check that a just-burned CD is correct?  With Linux it's
> easy, just compare md5sum  with md5sum 
> with md5sum /dev/cdrom.  QED.
> 
> There is a Windows port of md5sum but all it will sumcheck is a
> single file, NOT a device.
> 
> Neither will sumcheck recursively a directory structure, which is a
> serious oversight, IMHO.

Ah, but it will check the iso file.  What I do is download the iso, then
check the md5sum.  If OK, I burn it.  So far (keeping fingers crossed),
my burns seem to be either successful (the majority by far) or produce
an error message.  

And, if you are downloading a Linux distro to make your first Linux
installation, it is hard to do in Linux.

And, if you are paranoid, after burning a distro in Windows and
installing Linux, you can then check the md5 of the CD under Linux. 
(The one time I tried this, it didn't work.  I suspect it was because
(as I found out later), the CD must be unmounted to use md5sum
/dev/cdrom, and I think Linux (Mandrake 7.2) has afs or automount
installed by default (or I installed it without thinking about it).)

Randy Kramer



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Re: [expert] Bad CD?

[Ron Stodden]

Michael Leone wrote:
> 
> I've made many Linucx CDs of various distros using ISO images under
> Windows, using NT and Win2K, and Adaptec EasyCD Creator and Nero, and
> never had a failed CD. YMMV.
> (I've made Mandrake, RedHat, Debian, OpenBSD, Corel, others)

How do you check that a just-burned CD is correct?  With Linux it's
easy, just compare md5sum  with md5sum 
with md5sum /dev/cdrom.  QED.

There is a Windows port of md5sum but all it will sumcheck is a
single file, NOT a device.

Neither will sumcheck recursively a directory structure, which is a
serious oversight, IMHO.

-- 
Ron. [au]



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Re: [expert] Bad CD?

[Michael Leone]

It occurred to me that perhaps some were taking my use of CAPITALS as
shouting down at someone, rather than my intended use of strong
emphasis. My apologies if I came off as a shouting loudmouth.

I still stand by my beliefs that you should use whatever OS is best to
accomplish what you want or need to do, and if that means mixing
different OSes in the course of a day (or session - I use Win4Lin all
the time), then so be it.

Again, my apologies.
 
-- 

--
Michael J. Leone  Registered Linux user #201348 
ICQ: 50453890 AIM: MikeLeone

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Re: [expert] Bad CD?

[Michael Leone]

On Sat, 2001-08-25 at 20:58, civileme wrote:
> On Saturday 25 August 2001 14:06, Michael Leone wrote:
> > Ron Stodden <[EMAIL PROTECTED]> wrote:
> > >My advice is correct, not wrong, as you claim.  It is prudent and
> > >good practice, NOT to mix the two operating systems, either in
> > >practice or conceptually, surely?
> >
> > No.
> >
> > I use whatever OS I NEED to, or WANT to, to accomplish what I want/ned.
> >
> > In my case, I prefer using Windows to burn CDs using Adaptec EasyCD
> > Creator (not v5), since I find it easier than Linux equivalents. (not
> > always, but usually)
> > Similarily, I NEED to do electronic banking in Windows, since there is
> > no equivalent in Linux. (GnuCash does NOT do electronic banking or
> > online bill paying)
> 
> Whoa there, Tex.  You are in control of your own life.  You _choose_ to use 
> electronic banking, and windows use or the use of some proprietary software like
> Provendk is a consequence of that.  
> 
> No one holds a gun to your head, and you do not _need_ to do electronic 
> banking at all.  Countless thousands survived somehow even before it was invented.-)

No, I NEED to use Windows, if I WANT to do electronic banking, since
using Linux isn't an option, since there is no Linux program that does
what I NEED it to do, to accomplish my WANTS. That's what I said, altho
perhaps in a slightly less clear manner.

Isn't that why computers and OSes exist - to allow you to do what you
WANT or NEED to do?

> So it all comes down to a question of choices, which is fine.  But Ron is correct in 
>one 
> thing: Windows sucks at verifying linux CDs and can and will give you false or
> misleading information, because it was never programmed for the task.  Just a fact 
>that
> may influence your choices, offered in good spirits.

I've made many Linucx CDs of various distros using ISO images under
Windows, using NT and Win2K, and Adaptec EasyCD Creator and Nero, and
never had a failed CD. YMMV.
(I've made Mandrake, RedHat, Debian, OpenBSD, Corel, others)

 
-- 

--
Michael J. Leone  Registered Linux user #201348 
ICQ: 50453890 AIM: MikeLeone

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Re: [expert] Bad CD?

[civileme]

On Saturday 25 August 2001 14:06, Michael Leone wrote:
> Ron Stodden <[EMAIL PROTECTED]> wrote:
> >My advice is correct, not wrong, as you claim.  It is prudent and
> >good practice, NOT to mix the two operating systems, either in
> >practice or conceptually, surely?
>
> No.
>
> I use whatever OS I NEED to, or WANT to, to accomplish what I want/ned.
>
> In my case, I prefer using Windows to burn CDs using Adaptec EasyCD
> Creator (not v5), since I find it easier than Linux equivalents. (not
> always, but usually)
> Similarily, I NEED to do electronic banking in Windows, since there is
> no equivalent in Linux. (GnuCash does NOT do electronic banking or
> online bill paying)

Whoa there, Tex.  You are in control of your own life.  You _choose_ to use 
electronic banking, and windows use or the use of some proprietary software like
Provendk is a consequence of that.  

No one holds a gun to your head, and you do not _need_ to do electronic 
banking at all.  Countless thousands survived somehow even before it was invented.-)

So it all comes down to a question of choices, which is fine.  But Ron is correct in 
one 
thing: Windows sucks at verifying linux CDs and can and will give you false or
misleading information, because it was never programmed for the task.  Just a fact that
may influence your choices, offered in good spirits.

Civileme





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Re: [expert] Bad CD?

[Michael Leone]

Ron Stodden <[EMAIL PROTECTED]> wrote:

>My advice is correct, not wrong, as you claim.  It is prudent and
>good practice, NOT to mix the two operating systems, either in
>practice or conceptually, surely? 

No.

I use whatever OS I NEED to, or WANT to, to accomplish what I want/ned. 

In my case, I prefer using Windows to burn CDs using Adaptec EasyCD
Creator (not v5), since I find it easier than Linux equivalents. (not
always, but usually)
Similarily, I NEED to do electronic banking in Windows, since there is
no equivalent in Linux. (GnuCash does NOT do electronic banking or
online bill paying)

-- 

--
Michael J. Leone  Registered Linux user #201348 
ICQ: 50453890 AIM: MikeLeone

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PGP public key:


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RE: [expert] Bad CD?

[Jose M. Sanchez]

-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of
Ron Stodden
Sent: Saturday, August 25, 2001 2:23 AM
To: Mandrake Expert
Subject: Re: [expert] Bad CD?


"Jose M. Sanchez" wrote:
> 
> Eh, wrong.
> 
> ISO images themselves are in a "raw" format, which is only concerned 
> with the sectors of the CD, not the actual data structure. (unless you

> "open" the image in winblows, which he is not doing...)

Ho, hum.  I'm well aware, as you should have gathered from my reference
to mkisofs.

My advice is correct, not wrong, as you claim. 

It is prudent and good practice, NOT to mix the two operating systems,
either in
practice or conceptually, surely?  

---

No. Mixing the OS's is irrelevant. 

An ISO image can be burned in ANY OS without problems. You indicated the
contrary.

EZ-CD creator and other programs have no trouble dealing with Rockridge,
etc. as long as the user is not attempting to master the CD.

In this case the user is better off dealing with something that they
know, instead of dealing with the nuances of working with Linux to burn
CDs.

-JMS






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Re: [expert] Bad CD?

[Ron Stodden]

"Jose M. Sanchez" wrote:
> 
> Eh, wrong.
> 
> ISO images themselves are in a "raw" format, which is only concerned
> with the sectors of the CD, not the actual data structure. (unless you
> "open" the image in winblows, which he is not doing...)

Ho, hum.  I'm well aware, as you should have gathered from my
reference to mkisofs.

My advice is correct, not wrong, as you claim.  It is prudent and
good practice, NOT to mix the two operating systems, either in
practice or conceptually, surely?   Particularly when, as in this
case, the complainer appears inextricably confused, choosing a
difficult and dangerous methodology when a very simple one exists.

-- 
Ron. [au]



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RE: [expert] Bad CD?

[Alan N.]

I used Nero 5.0 under win2000 to burn mine. No problems.

Don't think you can make that blanket statement.


-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
Ron Stodden
Sent: Saturday, August 25, 2001 12:42 AM
To: Mandrake Expert
Subject: Re: [expert] Bad CD?


Felix Miata wrote:
> 
> On the 8.1 CD #1 I burned second, I used windoze and EZ-CD Creator at
> speed 2X. That 'md5sum /dev/sr0' matches. Then I tried it one the 8.1 CD
> #1 I burned first using cdrecord speed=2 (which burned at speed=1), and
> the process displayed the following:
...
> I tried again on the 8.1 B1 #2 CD, which I also made using windoze at
> 2X, and I got a much longer list of SCSI errors, and no md5sum. Next I
> tried md5sum an old beat up store bought Winderz95 CD. That also gave a
> bunch of SCSI errors, but ending with an md5sum value. I tried one more
> with a pristine store bought Corel Office CD, and that gave an md5sum
> value and zero SCSI errors.
> 

Please DON'T use Windows software on any Mandrake install CDs.   
Windows knows nothing about the Rock Ridge extensions to ISO9660 that
Linux uses, nor about the long name technique (mkisofs -U -
untranslated file names, a violation of ISO 9660) that should be used
on Linux disks.

Use cdrecord to create CDs from ISO image files.   Example, as
superuser, to a CD-RW blank:

cdrecord -v dev=0,0,0 speed=4 blank=fast
MandrakeLinux-8.1-Raklet-beta1-CD1.i586.iso

-- 
Ron. [au]





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RE: [expert] Bad CD?

[Jose M. Sanchez]

Eh, wrong.

ISO images themselves are in a "raw" format, which is only concerned
with the sectors of the CD, not the actual data structure. (unless you
"open" the image in winblows, which he is not doing...)

An ISO image burned under Linux or Windows -MUST- be no different in the
end result. 

I do this all the time with Rockridge, Winblows, Mac and other
formats...

RockRidge enters the picture at a higher level. I.E when you are
creating the ISO image itself. 
Then all the limitations you have stated apply.

-JMS



-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of
Ron Stodden
Sent: Saturday, August 25, 2001 12:42 AM
To: Mandrake Expert
Subject: Re: [expert] Bad CD?


Felix Miata wrote:
> 
> On the 8.1 CD #1 I burned second, I used windoze and EZ-CD Creator at 
> speed 2X. That 'md5sum /dev/sr0' matches. Then I tried it one the 8.1 
> CD #1 I burned first using cdrecord speed=2 (which burned at speed=1),

> and the process displayed the following:
...
> I tried again on the 8.1 B1 #2 CD, which I also made using windoze at 
> 2X, and I got a much longer list of SCSI errors, and no md5sum. Next I

> tried md5sum an old beat up store bought Winderz95 CD. That also gave 
> a bunch of SCSI errors, but ending with an md5sum value. I tried one 
> more with a pristine store bought Corel Office CD, and that gave an 
> md5sum value and zero SCSI errors.
> 

Please DON'T use Windows software on any Mandrake install CDs.   
Windows knows nothing about the Rock Ridge extensions to ISO9660 that
Linux uses, nor about the long name technique (mkisofs -U - untranslated
file names, a violation of ISO 9660) that should be used on Linux disks.

Use cdrecord to create CDs from ISO image files.   Example, as
superuser, to a CD-RW blank:

cdrecord -v dev=0,0,0 speed=4 blank=fast
MandrakeLinux-8.1-Raklet-beta1-CD1.i586.iso

-- 
Ron. [au]





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Re: [expert] Bad CD?

[Ron Stodden]

Felix Miata wrote:
> 
> On the 8.1 CD #1 I burned second, I used windoze and EZ-CD Creator at
> speed 2X. That 'md5sum /dev/sr0' matches. Then I tried it one the 8.1 CD
> #1 I burned first using cdrecord speed=2 (which burned at speed=1), and
> the process displayed the following:
...
> I tried again on the 8.1 B1 #2 CD, which I also made using windoze at
> 2X, and I got a much longer list of SCSI errors, and no md5sum. Next I
> tried md5sum an old beat up store bought Winderz95 CD. That also gave a
> bunch of SCSI errors, but ending with an md5sum value. I tried one more
> with a pristine store bought Corel Office CD, and that gave an md5sum
> value and zero SCSI errors.
> 

Please DON'T use Windows software on any Mandrake install CDs.   
Windows knows nothing about the Rock Ridge extensions to ISO9660 that
Linux uses, nor about the long name technique (mkisofs -U -
untranslated file names, a violation of ISO 9660) that should be used
on Linux disks.

Use cdrecord to create CDs from ISO image files.   Example, as
superuser, to a CD-RW blank:

cdrecord -v dev=0,0,0 speed=4 blank=fast
MandrakeLinux-8.1-Raklet-beta1-CD1.i586.iso

-- 
Ron. [au]



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Re: [expert] Bad CD?

[Alex Yung]

You can verify your newly burned CD by

   md5sum /dev/scd0

Compare this value with your ISO file.

DM wrote:

> i get trouble reading CDs that i have written using
> speed=4 so, for my ISOs, i stick to speed=2.
>
> one way to verify is to try to use the same install CD
> on a another machine and see if you get the same error
> on the same part of the install process.
>
> --- Felix Miata <[EMAIL PROTECTED]> wrote:
> > I just figured out the trouble I've been having
> > installing Mandrake 8
> > most likely has to do with a defective CD. I
> > downloaded the ISO's and
> > burned with my Yamaha 8824S and cdrecord with
> > speed=4 after verifying
> > the download with md5sum. Even so, during attempted
> > installation there
> > are always error messages on at least one of the
> > XFree86 RPM's, server
> > 4.0.3 being the culprit in the current attempt.
> >
> > I put the CD into my RedHat 6.2 box and tried to
> > verify the RPM, but a
> > version mismatch nixes that. I tried copying the RPM
> > to HD using OS/2,
> > with no problem, but that doesn't really prove
> > anything except that the
> > file on the CD is readable.
> >
> > How do I figure out for sure if the CD is really
> > bad?




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Re: [expert] Bad CD?

[DM]

i get trouble reading CDs that i have written using
speed=4 so, for my ISOs, i stick to speed=2. 

one way to verify is to try to use the same install CD
on a another machine and see if you get the same error
on the same part of the install process. 


--- Felix Miata <[EMAIL PROTECTED]> wrote:
> I just figured out the trouble I've been having
> installing Mandrake 8
> most likely has to do with a defective CD. I
> downloaded the ISO's and
> burned with my Yamaha 8824S and cdrecord with
> speed=4 after verifying
> the download with md5sum. Even so, during attempted
> installation there
> are always error messages on at least one of the
> XFree86 RPM's, server
> 4.0.3 being the culprit in the current attempt.
> 
> I put the CD into my RedHat 6.2 box and tried to
> verify the RPM, but a
> version mismatch nixes that. I tried copying the RPM
> to HD using OS/2,
> with no problem, but that doesn't really prove
> anything except that the
> file on the CD is readable.
> 
> How do I figure out for sure if the CD is really
> bad?
> -- 
> "Our Constitution was made only for a moral and
> religious people. It is
> wholly inadequate to the government of any other."
>
> President John Adams
> 
> Felix Miata  *** 
> http://mrmazda.members.atlantic.net/
> 
> 
> > Want to buy your Pack or Services from
MandrakeSoft?
> 
> Go to http://.mandrakestore.com
> 


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[expert] Bad CD?

[Felix Miata]

I just figured out the trouble I've been having installing Mandrake 8
most likely has to do with a defective CD. I downloaded the ISO's and
burned with my Yamaha 8824S and cdrecord with speed=4 after verifying
the download with md5sum. Even so, during attempted installation there
are always error messages on at least one of the XFree86 RPM's, server
4.0.3 being the culprit in the current attempt.

I put the CD into my RedHat 6.2 box and tried to verify the RPM, but a
version mismatch nixes that. I tried copying the RPM to HD using OS/2,
with no problem, but that doesn't really prove anything except that the
file on the CD is readable.

How do I figure out for sure if the CD is really bad?
-- 
"Our Constitution was made only for a moral and religious people. It is
wholly inadequate to the government of any other."
President John Adams

Felix Miata  ***  http://mrmazda.members.atlantic.net/




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