Copy iso Disk
DARREN BROWN
plug-discuss@lists.plug.phoenix.az.us
Mon, 11 Nov 2002 22:26:51 -0700
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The if=3D/dev/cdrom is the CD inside the CDROM containing the data I wish=
to copy.
Then what is of=3D/target/dir/file.iso?
If I understand, file.iso is the data that is copied to this directory.
If so, can I then copy the data to a CD burner? Like a USB burner? HP...=
.
Regards,
Darren
----- Original Message -----
From: Voltage Spike
Sent: Monday, November 11, 2002 5:34 PM
To: plug-discuss@lists.plug.phoenix.az.us
Subject: Re: Copy iso Disk
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On Friday, November 8, 2002, at 02:22 PM, Carl Parrish wrote:
> Okay I want to copy an ISO image. Can I do something like
> dd if=3D/dev/cdrom of=3D/target/dir/ iso9660
> Or would I be better off Coping the disk then using mkiso?
As Bill Jonas pointed out, this will not copy bootable CDs. Using =20
mkisofs will not result in "bit-perfect" copies, either(1). Your =20
method is the best one that I know of with the exception that you need =20
to provide a file:
dd if=3D/dev/cdrom of=3D/target/dir/file.iso
If you are copying a Linux installation CD this is _highly_ recommended =20
since it will retain the ability to boot and the MD5 hash (available =20
from the publisher) will still match with the new CD.
(1) The individual files will be the same, but their position on the =20
disk may be different. This is usually not a problem, but it can be =20
with certain copy restriction algorithms. You also lose the CD's =20
label/name with mkisofs unless you take extra steps to provide it.
- -- =20
Voltage Spike
,,,
(. .)
- --ooO-(_)-Ooo--
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<HTML><BODY STYLE=3D"font:10pt verdana; border:none;"><DIV>The if=3D/dev/=
cdrom is the CD inside the CDROM containing the data I wish to copy.</DIV=
> <DIV> </DIV> <DIV>Then what is of=3D/target/dir/file.iso?</DIV> <D=
IV>If I understand, file.iso is the data that is copied to this directory=
.</DIV> <DIV>If so, can I then copy the data to a CD burner? L=
ike a USB burner? HP....</DIV> <DIV> </DIV> <DIV> </DIV> <DIV>R=
egards,</DIV> <DIV>Darren</DIV> <DIV> </DIV> <BLOCKQUOTE style=3D"BO=
RDER-LEFT: #000000 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDIN=
G-LEFT: 5px; PADDING-RIGHT: 0px"> <DIV style=3D"FONT: 10pt Arial">----- O=
riginal Message -----</DIV> <DIV style=3D"BACKGROUND: #e4e4e4; COLOR: bla=
ck; FONT: 10pt Arial"><B>From:</B> Voltage Spike</DIV> <DIV style=3D"FONT=
: 10pt Arial"><B>Sent:</B> Monday, November 11, 2002 5:34 PM</DIV> <DIV s=
tyle=3D"FONT: 10pt Arial"><B>To:</B> plug-discuss@lists.plug.phoenix.az.u=
s</DIV> <DIV style=3D"FONT: 10pt Arial"><B>Subject:</B> Re: Copy iso Disk=
</DIV> <DIV> </DIV>-----BEGIN PGP SIGNED MESSAGE-----<BR>Hash: SHA1<=
BR><BR>On Friday, November 8, 2002, at 02:22 PM, Carl Parrish wrote:<BR><=
BR>> Okay I want to copy an ISO image. Can I do something like<BR>>=
dd if=3D/dev/cdrom of=3D/target/dir/ iso9660<BR>> Or would I be bette=
r off Coping the disk then using mkiso?<BR><BR>As Bill Jonas pointed out,=
this will not copy bootable CDs. Using <BR>mkisofs will not result=
in "bit-perfect" copies, either(1). Your <BR>method is the best on=
e that I know of with the exception that you need <BR>to provide a file:<=
BR><BR>dd if=3D/dev/cdrom of=3D/target/dir/file.iso<BR><BR>If you are cop=
ying a Linux installation CD this is _highly_ recommended <BR>since it wi=
ll retain the ability to boot and the MD5 hash (available <BR>from the pu=
blisher) will still match with the new CD.<BR><BR>(1) The individual file=
s will be the same, but their position on the <BR>disk may be different.&=
nbsp; This is usually not a problem, but it can be <BR>with certain copy =
restriction algorithms. You also lose the CD's <BR>label/name with =
mkisofs unless you take extra steps to provide it.<BR><BR>- -- <BR> =
&=
nbsp; &n=
bsp; &nb=
sp; &nbs=
p; Voltage Spike<BR=
> ,,,<BR> &nbs=
p; (. .)<BR>- --ooO-(_)-Ooo--<BR><BR>-----BEGIN PGP SIGNATURE-----<BR>Ver=
sion: GnuPG v1.0.7 (Darwin)<BR><BR>iD8DBQE90ExipNoctRtUIRQRAmNVAJ4iALixK6=
x4zDJnHRZr4vKolQvWmgCghJ6F<BR>hypEg/WP6nxRJOf6ODg5oyo=3D<BR>=3DqIIR<BR>--=
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=3D-=3D-=3D-<BR>PLUG-discuss mailing list - PLUG-discuss@lists.plug.phoen=
ix.az.us<BR>To subscribe, unsubscribe, or to change you mail settin=
gs:<BR>http://lists.PLUG.phoenix.az.us/mailman/listinfo/plug-discuss<BR><=
/BLOCKQUOTE></BODY></HTML>
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