Hi:
I wonder if anyone else has seen the following strange problem that I’m
having with a CD made using mkisofs.
a. The ISO image is made with the following command:
mkisofs -aflLTvR -o boot1.iso -b boot.image -V boot1 ./boot1
b. All but one of the files transfers off the resulting CD fine.
c .There is one file that sometimes transfers and sometimes doesn’t. When it
doesn’t transfer, it reports an Input/Output error and leaves me with a
truncated file that is almost up to the required size (typically 0x74000
instead of 0x79000).
Whether it transfers successfully or not seems to be dependent on what other
“cp” commands preceded the “cp” for that file. If I loop through the entire
CD and ask for every file on the disk to be copied, that one file transfers
just fine. However, if I do a standalone copy or one preceded by only a few
other copies off the CD, it fails.
d. The problem occurs on 2 different platforms with different CD drives.
e. The problem does not occur under Windows - the file transfers singly or
in a batch with no problem
f. I’ve taken note of the caveat in the documentation for Iso9660fsys and
have tried using the “-s” switch and to follow with a separate “mount” but
that doesn’t change anything.
This is really strange - anyone seen anything like it?
Thanks
Lionel
Discovered that the problem occurs when Adaptec Easy Creator 4 is used to
create the CD. If I switch to using CDRWIN from www.goldenhawk.com , the
problem goes away (same ISO image file). Anyone understand what may be going
on here ?
Thanks
Lionel
“Lionel Johnson” <ljohnson@nospamsterling1.com> wrote in message
news:akn0kv$fkk$1@inn.qnx.com…
Hi:
I wonder if anyone else has seen the following strange problem that I’m
having with a CD made using mkisofs.
a. The ISO image is made with the following command:
mkisofs -aflLTvR -o boot1.iso -b boot.image -V boot1 ./boot1
b. All but one of the files transfers off the resulting CD fine.
c .There is one file that sometimes transfers and sometimes doesn’t. When
it
doesn’t transfer, it reports an Input/Output error and leaves me with a
truncated file that is almost up to the required size (typically 0x74000
instead of 0x79000).
Whether it transfers successfully or not seems to be dependent on what
other
“cp” commands preceded the “cp” for that file. If I loop through the
entire
CD and ask for every file on the disk to be copied, that one file
transfers
just fine. However, if I do a standalone copy or one preceded by only a
few
other copies off the CD, it fails.
d. The problem occurs on 2 different platforms with different CD drives.
e. The problem does not occur under Windows - the file transfers singly or
in a batch with no problem
f. I’ve taken note of the caveat in the documentation for Iso9660fsys and
have tried using the “-s” switch and to follow with a separate “mount” but
that doesn’t change anything.
This is really strange - anyone seen anything like it?
Thanks
Lionel
What I learned using Adaptec/Roxio Easy Creator:
I learned that if I record with ‘Track-at-Once’ each time a track is
finished, the
recording laser stops. Then recording laser starts up again to write
the next track. This creates small gaps in the CD. These gaps cause
problems if a disc is to be mastered. The qnx mkisofs tool is used for
premastering iso9660 filesystems to create the CD image.
Therefore, I chose to record with ‘Disc-at-once’ since all tracks are
recorded without
stopping the laser. And ‘magic’ all worked OK. No file input/output
errors.
Lionel Johnson wrote:
Discovered that the problem occurs when Adaptec Easy Creator 4 is used to
create the CD. If I switch to using CDRWIN from > www.goldenhawk.com > , the
problem goes away (same ISO image file). Anyone understand what may be going
on here ?
Thanks
Lionel
“Lionel Johnson” <ljohnson@nospamsterling1.com> wrote in message
news:akn0kv$fkk$> 1@inn.qnx.com> …
Hi:
I wonder if anyone else has seen the following strange problem that I’m
having with a CD made using mkisofs.
a. The ISO image is made with the following command:
mkisofs -aflLTvR -o boot1.iso -b boot.image -V boot1 ./boot1
b. All but one of the files transfers off the resulting CD fine.
c .There is one file that sometimes transfers and sometimes doesn’t. When
it
doesn’t transfer, it reports an Input/Output error and leaves me with a
truncated file that is almost up to the required size (typically 0x74000
instead of 0x79000).
Whether it transfers successfully or not seems to be dependent on what
other
“cp” commands preceded the “cp” for that file. If I loop through the
entire
CD and ask for every file on the disk to be copied, that one file
transfers
just fine. However, if I do a standalone copy or one preceded by only a
few
other copies off the CD, it fails.
d. The problem occurs on 2 different platforms with different CD drives.
e. The problem does not occur under Windows - the file transfers singly or
in a batch with no problem
f. I’ve taken note of the caveat in the documentation for Iso9660fsys and
have tried using the “-s” switch and to follow with a separate “mount” but
that doesn’t change anything.
This is really strange - anyone seen anything like it?
Thanks
Lionel
What I learned using Adaptec/Roxio Easy Creator:
I learned that if I record with ‘Track-at-Once’ each time a track is
finished, the
recording laser stops. Then recording laser starts up again to write
the next track. This creates small gaps in the CD. These gaps cause
problems if a disc is to be mastered. The qnx mkisofs tool is used for
premastering iso9660 filesystems to create the CD image.
Therefore, I chose to record with ‘Disc-at-once’ since all tracks are
recorded without
stopping the laser. And ‘magic’ all worked OK. No file input/output
errors.
Lionel Johnson wrote:
Discovered that the problem occurs when Adaptec Easy Creator 4 is used to
create the CD. If I switch to using CDRWIN from > www.goldenhawk.com > , the
problem goes away (same ISO image file). Anyone understand what may be going
on here ?
Thanks
Lionel
“Lionel Johnson” <ljohnson@nospamsterling1.com> wrote in message
news:akn0kv$fkk$> 1@inn.qnx.com> …
Hi:
I wonder if anyone else has seen the following strange problem that I’m
having with a CD made using mkisofs.
a. The ISO image is made with the following command:
mkisofs -aflLTvR -o boot1.iso -b boot.image -V boot1 ./boot1
b. All but one of the files transfers off the resulting CD fine.
c .There is one file that sometimes transfers and sometimes doesn’t. When
it
doesn’t transfer, it reports an Input/Output error and leaves me with a
truncated file that is almost up to the required size (typically 0x74000
instead of 0x79000).
Whether it transfers successfully or not seems to be dependent on what
other
“cp” commands preceded the “cp” for that file. If I loop through the
entire
CD and ask for every file on the disk to be copied, that one file
transfers
just fine. However, if I do a standalone copy or one preceded by only a
few
other copies off the CD, it fails.
d. The problem occurs on 2 different platforms with different CD drives.
e. The problem does not occur under Windows - the file transfers singly or
in a batch with no problem
f. I’ve taken note of the caveat in the documentation for Iso9660fsys and
have tried using the “-s” switch and to follow with a separate “mount” but
that doesn’t change anything.
This is really strange - anyone seen anything like it?
Thanks
Lionel
Delia:
Thanks for following up with the info. We’ve actually switched to using
CDRWIN as described in my original posting and all is going well. If I get
the chance (and find a machine that still has Easy Creator functional), I’ll
try what you suggest. I can’t remember whether we used “Track at Once” or
“Disk at Once”, although I have the impression that we tried every possible
combination of settings.
Thanks
Lionel
“Delia Leal” <Delia.Leal@sri.com> wrote in message
news:3DFF9824.2E5D6ACC@sri.com…
What I learned using Adaptec/Roxio Easy Creator:
I learned that if I record with ‘Track-at-Once’ each time a track is
finished, the
recording laser stops. Then recording laser starts up again to write
the next track. This creates small gaps in the CD. These gaps cause
problems if a disc is to be mastered. The qnx mkisofs tool is used for
premastering iso9660 filesystems to create the CD image.
Therefore, I chose to record with ‘Disc-at-once’ since all tracks are
recorded without
stopping the laser. And ‘magic’ all worked OK. No file input/output
errors.
Lionel Johnson wrote:
Discovered that the problem occurs when Adaptec Easy Creator 4 is used
to
create the CD. If I switch to using CDRWIN from > www.goldenhawk.com > , the
problem goes away (same ISO image file). Anyone understand what may be
going
on here ?
Thanks
Lionel
“Lionel Johnson” <ljohnson@nospamsterling1.com> wrote in message
news:akn0kv$fkk$> 1@inn.qnx.com> …
Hi:
I wonder if anyone else has seen the following strange problem that
I’m
having with a CD made using mkisofs.
a. The ISO image is made with the following command:
mkisofs -aflLTvR -o boot1.iso -b boot.image -V boot1 ./boot1
b. All but one of the files transfers off the resulting CD fine.
c .There is one file that sometimes transfers and sometimes doesn’t.
When
it
doesn’t transfer, it reports an Input/Output error and leaves me with
a
truncated file that is almost up to the required size (typically
0x74000
instead of 0x79000).
Whether it transfers successfully or not seems to be dependent on what
other
“cp” commands preceded the “cp” for that file. If I loop through the
entire
CD and ask for every file on the disk to be copied, that one file
transfers
just fine. However, if I do a standalone copy or one preceded by only
a
few
other copies off the CD, it fails.
d. The problem occurs on 2 different platforms with different CD
drives.
e. The problem does not occur under Windows - the file transfers
singly or
in a batch with no problem
f. I’ve taken note of the caveat in the documentation for Iso9660fsys
and
have tried using the “-s” switch and to follow with a separate “mount”
but
that doesn’t change anything.
This is really strange - anyone seen anything like it?
Thanks
Lionel