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Johannes Beekhuizen
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 Posted: Sun Oct 19, 2008 7:04 pm Post subject: Problem: not booting from cd-rom |
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Hello,
My system [ASUS P5ND2SLI] refuses to boot from cd-rom.
The BIOS configuration looks ok.
The discs [I tried 2] give no problems on another computer.
I tried them in both the cd- and the dvd drive.
I boots perfect from a dvd.
I can read [copy] the disc without any problem.
I cleaned the disc lens.
What can I check before I try another cd-drive?
Regards,
Hans.
jdh dot beekhuizen at duinheks dot nl |
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Dances With Crows
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| Posted: Sun Oct 19, 2008 10:09 pm Post subject: Re: Problem: not booting from cd-rom |
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Johannes Beekhuizen staggered into the Black Sun and said:
| Quote: | My system [ASUS P5ND2SLI] refuses to boot from cd-rom. The BIOS
configuration looks ok. The discs [I tried 2] give no problems on
another computer.
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Is the CD-R* IDE or SATA? What about the DVD-R*? If any device is IDE,
which /dev/hd? device node does it show up as? How new is this
motherboard? Some really new boards treat IDE devices as second-class
citizens and may behave stupidly with them.
| Quote: | I tried them in both the cd- and the dvd drive. [It] boots perfectly
from a dvd. I can read [copy] the disc without any problem.
I cleaned the disc lens. What can I check before I try another
cd-drive?
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This shouldn't be happening. I wouldn't be insanely concerned about it
since drives that can't read DVDs are obsolete, though.
--
Jesus is the best radio producer in the beans. We need some saliva
and pickles to get mad. --MegaHAL, "The Best of MegaHAL"
My blog: http://crow202.org/wordpress/
Matt G|There is no Darkness in Eternity/But only Light too dim for us to see |
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Mark Hobley
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| Posted: Sun Oct 19, 2008 11:52 pm Post subject: Re: Problem: not booting from cd-rom |
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Johannes Beekhuizen <jbeekhui@duinheks.nl> wrote:
| Quote: | Hello,
My system [ASUS P5ND2SLI] refuses to boot from cd-rom.
What can I check before I try another cd-drive?
|
Yeah. I have seen this problem on several drives. Make sure that the
drive that you purchase boots with your disk, before you buy it. Not all
drives boot with all disks.
http://markhobley.yi.org/laboratory/mysteries/cdrom/index.html
Regards,
Mark.
--
Mark Hobley
Linux User: #370818 http://markhobley.yi.org/ |
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Mark Hobley
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| Posted: Mon Oct 20, 2008 12:27 am Post subject: Re: Problem: not booting from cd-rom |
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Johannes Beekhuizen <jbeekhui@duinheks.nl> wrote:
| Quote: | My system [ASUS P5ND2SLI] refuses to boot from cd-rom.
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Please let me know what model drive this is.
Mark.
--
Mark Hobley
Linux User: #370818 http://markhobley.yi.org/ |
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Johannes Beekhuizen
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| Posted: Mon Oct 20, 2008 1:27 am Post subject: Re: Problem: not booting from cd-rom |
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Hallo Dances with Crows,
Op zondag 19 oktober 2008 schreef Dances With Crows aan All:
| Quote: | My system [ASUS P5ND2SLI] refuses to boot from cd-rom.
DWC> Is the CD-R* IDE or SATA? What about the DVD-R*? If any device |
DWC> is IDE, which /dev/hd? device node does it show up as?
They're both IDE. The cd is /dev/hdc; the dvd is /dev/hdd. But
I just remembered the I had to change the udev rules, because
when I changed to SlackWare 12.1 I had problems accessing the
cd: it seemed not to exist. Wonder if that has something to
do with it?
DWC> How new is this motherboard? Some really new boards treat IDE
DWC> devices as second-class citizens and may behave stupidly with
DWC> them.
The motherboard will be about 3 or 3.5 years old. But it used
to work...
| Quote: | What can I check before I try another cd-drive?
DWC> This shouldn't be happening. I wouldn't be insanely concerned |
DWC> about it since drives that can't read DVDs are obsolete, though.
I noticed already that it's difficult to buy cd-drives nowadays.
Not that it makes much difference, as the dvd drives have become
quite cheap. I just want to save that money 
In the mean time I discovered that I have an old cd-player "on
the shelf". If that works maybe I can eliminate problems with
the drive.
Groeten,
Hans.
jdh punt beekhuizen bij duinheks punt nl |
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Johannes Beekhuizen
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| Posted: Mon Oct 20, 2008 1:37 am Post subject: Re: Problem: not booting from cd-rom |
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Hallo Mark,
Op zondag 19 oktober 2008 schreef Mark Hobley aan All:
| Quote: | My system [ASUS P5ND2SLI] refuses to boot from cd-rom.
What can I check before I try another cd-drive?
MH> Yeah. I have seen this problem on several drives. Make sure that |
MH> the drive that you purchase boots with your disk, before you buy
MH> it. Not all drives boot with all disks.
But this system *used*to* boot from cd. Not that I do so
very often, but that seems to rule out this problem.
MH> http://markhobley.yi.org/laboratory/mysteries/cdrom/index.html
I'll read the article though.
Groeten,
Hans.
jdh punt beekhuizen bij duinheks punt nl |
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Johannes Beekhuizen
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| Posted: Fri Oct 24, 2008 3:44 pm Post subject: Re: Problem: not booting from cd-rom |
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Hallo,
Op zondag 19 oktober 2008 schreef Johannes Beekhuizen aan Dances With Crows:
JB> In the mean time I discovered that I have an old cd-player "on
JB> the shelf". If that works maybe I can eliminate problems with
JB> the drive.
Last Monday I replaced the unwilling cd drive by the spare one
and checked all the connections. No luck. On Wednesday I put in
a new dvd drive and that did the trick. I still don't understand
why I could read the cd's but the drive refused to boot, but that
is not so important: I can boot again from cd if necessary.
I also replaced the other dvd drive, which failed to read cd's
since quite a long time.
Groeten,
Hans.
jdh punt beekhuizen bij duinheks punt nl |
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Mark Hobley
Guest
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| Posted: Sat Oct 25, 2008 12:16 am Post subject: Re: Problem: not booting from cd-rom |
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Johannes Beekhuizen <jbeekhui@duinheks.nl> wrote:
| Quote: | But this system *used*to* boot from cd. Not that I do so
very often, but that seems to rule out this problem.
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From the same cd, or did it used to boot from another cd? Ensure that
you are using the cd that used to boot.
If you have an old Microsoft Windows '95 disk, you can boot from that to
check that the drive can actually boot (you don't need to install, just
see if the drive boots).
Regards,
Mark.
--
Mark Hobley
Linux User: #370818 http://markhobley.yi.org/ |
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Mark Hobley
Guest
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| Posted: Sat Oct 25, 2008 12:23 am Post subject: Re: Problem: not booting from cd-rom |
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Johannes Beekhuizen <jbeekhui@duinheks.nl> wrote:
| Quote: | The motherboard will be about 3 or 3.5 years old. But it used
to work...
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Has the computer changed in any way? For example has the computer been
opened for service, or the drive which used to be master is now a slave,
etc?
Some systems can only boot if the drive is in a specific position, eg
primary slave (even if the bios parameters imply otherwise.)
If you have a spare machine that can boot, try swapping the cdrom
drive from another computer that you know can boot from the same disk,
and try booting each of the computers?
Has the problem moved to the other computer, (the cdrom drive has a
problem), or does this computer have a problem with the newly swapped
drive (the problem is with the computer or setup)?
Mark.
--
Mark Hobley
Linux User: #370818 http://markhobley.yi.org/ |
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Mark Hobley
Guest
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| Posted: Tue Oct 28, 2008 10:07 pm Post subject: Re: Problem: not booting from cd-rom |
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Johannes Beekhuizen <jbeekhui@duinheks.nl> wrote:
| Quote: | But this system *used*to* boot from cd. Not that I do so
very often, but that seems to rule out this problem.
|
Interestingly, I have just encountered a problem with one of my machines
not booting with an updated disk burned with a Debian based .iso image.
I know that the machine would boot with the old image, because I used
the cdrom drive to install the system. However with the newer disk, the
system ignores the bootable cdrom disk and jumps straight to loading
lilo from the hard drive. I have flagged that up for testing, so I will
probably look again at that at a future date. It is possible that the
drive has gone faulty, but I reckon its probably due to a differences between
the older and newer disk images.
Mark.
--
Mark Hobley
Linux User: #370818 http://markhobley.yi.org/ |
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Michael Black
Guest
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| Posted: Wed Oct 29, 2008 12:06 am Post subject: Re: Problem: not booting from cd-rom |
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On Tue, 28 Oct 2008, Mark Hobley wrote:
| Quote: | Johannes Beekhuizen <jbeekhui@duinheks.nl> wrote:
But this system *used*to* boot from cd. Not that I do so
very often, but that seems to rule out this problem.
Interestingly, I have just encountered a problem with one of my machines
not booting with an updated disk burned with a Debian based .iso image.
I know that the machine would boot with the old image, because I used
the cdrom drive to install the system. However with the newer disk, the
system ignores the bootable cdrom disk and jumps straight to loading
lilo from the hard drive. I have flagged that up for testing, so I will
probably look again at that at a future date. It is possible that the
drive has gone faulty, but I reckon its probably due to a differences between
the older and newer disk images.
This has certainly happened with Slackware. Up to a certain point, |
something was set in creating the ISO so it was useable on older hardware.
Then a new release came out, and that variable was changed to what it
should be, which is more compatible with newer hardware. Suddenly I
couldn't boot the DVD, and so did others and it was even documented.
So the trick was to use the smart boot manager, and there's no problem.
Michael |
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Jerry Peters
Guest
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| Posted: Wed Oct 29, 2008 1:38 am Post subject: Re: Problem: not booting from cd-rom |
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Mark Hobley <markhobley@hotpop.donottypethisbit.com> wrote:
| Quote: | Johannes Beekhuizen <jbeekhui@duinheks.nl> wrote:
But this system *used*to* boot from cd. Not that I do so
very often, but that seems to rule out this problem.
Interestingly, I have just encountered a problem with one of my machines
not booting with an updated disk burned with a Debian based .iso image.
I know that the machine would boot with the old image, because I used
the cdrom drive to install the system. However with the newer disk, the
system ignores the bootable cdrom disk and jumps straight to loading
lilo from the hard drive. I have flagged that up for testing, so I will
probably look again at that at a future date. It is possible that the
drive has gone faulty, but I reckon its probably due to a differences between
the older and newer disk images.
Mark.
I have one PC with a DVD-ROM drive that will not boot from one of the |
small diameter CDRW's but will boot from a full sized CDRW. Both CD's
have identical contents and were burnt with identical settings from a set
of scripts I use to build recovery CD's. I'm not sure if it's the size
the drive objects to or the brand of the medium. I haven't really
pursued the matter since I can get one of the recovery CD's to boot.
Jerry |
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Mark Hobley
Guest
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| Posted: Wed Oct 29, 2008 4:27 am Post subject: Re: Problem: not booting from cd-rom |
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Michael Black <et472@ncf.ca> wrote:
| Quote: | This has certainly happened with Slackware. Up to a certain point,
something was set in creating the ISO so it was useable on older hardware.
Then a new release came out, and that variable was changed to what it
should be, which is more compatible with newer hardware. Suddenly I
couldn't boot the DVD, and so did others and it was even documented.
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Oh right. I wonder what setting that was.
--
Mark Hobley
Linux User: #370818 http://markhobley.yi.org/ |
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Michael Black
Guest
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| Posted: Wed Oct 29, 2008 7:37 am Post subject: Re: Problem: not booting from cd-rom |
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On Tue, 28 Oct 2008, Mark Hobley wrote:
| Quote: | Michael Black <et472@ncf.ca> wrote:
This has certainly happened with Slackware. Up to a certain point,
something was set in creating the ISO so it was useable on older hardware.
Then a new release came out, and that variable was changed to what it
should be, which is more compatible with newer hardware. Suddenly I
couldn't boot the DVD, and so did others and it was even documented.
Oh right. I wonder what setting that was.
I was vague because I couldn't remember, and once I had the solution of |
using the smart boot manager, the rest wasn't important to me.
I checked, and the problem I was referring to (whether or not
it applies in this case) is mkisofs' -boot-load-size.
Slackware started out using "4", which made it load on more older
computers (because of the BIOS). Then it was bumped up to "32" in
the next release, which was more appropriate but did cause some
problems with booting and older computers.
Michael |
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Joerg Schilling
Guest
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| Posted: Wed Oct 29, 2008 4:28 pm Post subject: Re: Problem: not booting from cd-rom |
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In article <Pine.LNX.4.64.0810282337400.22644@darkstar.example.net>,
Michael Black <et472@ncf.ca> wrote:
| Quote: | I was vague because I couldn't remember, and once I had the solution of
using the smart boot manager, the rest wasn't important to me.
I checked, and the problem I was referring to (whether or not
it applies in this case) is mkisofs' -boot-load-size.
Slackware started out using "4", which made it load on more older
computers (because of the BIOS). Then it was bumped up to "32" in
the next release, which was more appropriate but did cause some
problems with booting and older computers.
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Most "modern" boot code has been designed for -boot-load-size 4 which
is one 2048 byte sector.
This however only works in case these 2048 bytes contain code to load the
rest of the boot from the medium.
If you have problems you might also like to check whether you use a real
mkisofs or a modified version based on very old software.
See: http://cdrecord.berlios.de/private/linux-dist.html
--
EMail:joerg@schily.isdn.cs.tu-berlin.de (home) Jörg Schilling D-13353 Berlin
js@cs.tu-berlin.de (uni)
schilling@fokus.fraunhofer.de (work) Blog: http://schily.blogspot.com/
URL: http://cdrecord.berlios.de/private/ ftp://ftp.berlios.de/pub/schily |
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