Re: [expert] Boot CD (was Bit-for-bit CD's)
duane voth wrote: > > To make a bit for bit copy of a CD it is probably easier to extract > the CD image directly to a file (avoid mkisofs all together): > >dd if=/dev/cdrom of=image.iso > > then cdrecord image.iso directly. You can test to see if your dd > worked correctly with: > >mount image.iso -r -t iso9660 -o loop /mnt/iso > > This lets you browse (but not change) the image before you burn a CD. If all you want is to test the CD copy just mount both original and copy, then: md5sum /dev/cdrom(the original) md5sum /dev/scd0(the copy) Both must produce exactly the sam md5sum. If they do not: md5sum image.iso will show you whether the read (dd) or write (cdrecord) was the problem. -- Regards, Ron. [AU]
Re: [expert] Boot CD (was Bit-for-bit CD's)
Ronald L. Chichester wrote: > "Ronald L. Chichester" wrote: > > Okay folks, I figured out how to make a regular cd using mkisofs and > cdrecord (still couldn't get any of the GUI routines to work correctly, > but the command line routines are still available and still work). > > In any case, the last trick that I need is to get the install disk to > act as a boot disk. Is there some special incantation with cdrecord > that I need in order to make the install disk bootable? I DID read the > man page for cdrecord, but it wasn't terribly enlightening. I presume > that the image that needs to be booted is /boot/vmlinuz in the install > CD. Question that I have (aside from making it a boot CD) is how to get > it to boot that image. It will be a mkisofs issue. On the original cd (and now also your copy) will be a *floppy* image file that contains the boot code. It's weird, CDs mimic booting from a floppy! I've made boot CDs using the following mkisofs command (after placing the boot floppy image in /tmp): mkisofs -v -U -R -b /tmp/fd144.img -c / You will want to modify this to suit your env. Note that the floppy image has to be *part of* (i.e. a file within) the filesystem you are writing to the CD! - To make a bit for bit copy of a CD it is probably easier to extract the CD image directly to a file (avoid mkisofs all together): dd if=/dev/cdrom of=image.iso then cdrecord image.iso directly. You can test to see if your dd worked correctly with: mount image.iso -r -t iso9660 -o loop /mnt/iso This lets you browse (but not change) the image before you burn a CD. duane
Re: [expert] Boot CD (was Bit-for-bit CD's)
On Monday 01 January 2001 12:23, you wrote: > Are you sure, I believe it depends on your BIOS first > and foremost, if you can set it to boot in a priority > of cd-rom, floppy,HD. > > Al > > --- Tom Berkley <[EMAIL PROTECTED]> wrote: > > You need a cdrom that is bootable. I have never been > > able to boot with an > > ide cdrom drive, however, my plextor cdrom drives on > > my scsi bus are > > bootable. I am in fact reminded often when I leave a > > linux cd in either > > cdrom drive and reboot my system. > > > > Tom Berkley You need a bootable CD and set your Bios to boot the CD Drive first. I have an IDE Disk drive and it works great. Jerry -- Gerald Williams Words Matter! Bangkok, Thailand
Re: [expert] Boot CD (was Bit-for-bit CD's)
Thanks a gob. Went to bios, put the ide cdrom above the hard drive in the boot sequence and voila, linux cd booted! First new thing that I've learned this year! Omen for the year. Yee haa. Wish the same for all. Tom Berkley Brian Hartman wrote: > It's a BIOS issue. ide cd-rom's can be bootable, too (mine is), but your > bios needs to be set for it. You need to have a bios that supports bootup > from cdrom and you need to set the boot sequence so that the cdrom is looked > for first to boot from, rather than the hard drive. > > On Monday 01 January 2001 12:23 am, you wrote: > > Are you sure, I believe it depends on your BIOS first > > and foremost, if you can set it to boot in a priority > > of cd-rom, floppy,HD. > > > > Al > > > > --- Tom Berkley <[EMAIL PROTECTED]> wrote: > > > You need a cdrom that is bootable. I have never been > > > able to boot with an > > > ide cdrom drive, however, my plextor cdrom drives on > > > my scsi bus are > > > bootable. I am in fact reminded often when I leave a > > > linux cd in either > > > cdrom drive and reboot my system. > > > > > > Tom Berkley > > > > > -- > Brian Hartman, MLS > [EMAIL PROTECTED]
Re: [expert] Boot CD (was Bit-for-bit CD's)
It's a BIOS issue. ide cd-rom's can be bootable, too (mine is), but your bios needs to be set for it. You need to have a bios that supports bootup from cdrom and you need to set the boot sequence so that the cdrom is looked for first to boot from, rather than the hard drive. On Monday 01 January 2001 12:23 am, you wrote: > Are you sure, I believe it depends on your BIOS first > and foremost, if you can set it to boot in a priority > of cd-rom, floppy,HD. > > Al > > --- Tom Berkley <[EMAIL PROTECTED]> wrote: > > You need a cdrom that is bootable. I have never been > > able to boot with an > > ide cdrom drive, however, my plextor cdrom drives on > > my scsi bus are > > bootable. I am in fact reminded often when I leave a > > linux cd in either > > cdrom drive and reboot my system. > > > > Tom Berkley > > -- Brian Hartman, MLS [EMAIL PROTECTED]
Re: [expert] Boot CD (was Bit-for-bit CD's)
Are you sure, I believe it depends on your BIOS first and foremost, if you can set it to boot in a priority of cd-rom, floppy,HD. Al --- Tom Berkley <[EMAIL PROTECTED]> wrote: > You need a cdrom that is bootable. I have never been > able to boot with an > ide cdrom drive, however, my plextor cdrom drives on > my scsi bus are > bootable. I am in fact reminded often when I leave a > linux cd in either > cdrom drive and reboot my system. > > Tom Berkley > > > "Ronald L. Chichester" wrote: > > > "Ronald L. Chichester" wrote: > > > > Okay folks, I figured out how to make a regular cd > using mkisofs and > > cdrecord (still couldn't get any of the GUI > routines to work correctly, > > but the command line routines are still available > and still work). > > > > In any case, the last trick that I need is to get > the install disk to > > act as a boot disk. Is there some special > incantation with cdrecord > > that I need in order to make the install disk > bootable? I DID read the > > man page for cdrecord, but it wasn't terribly > enlightening. I presume > > that the image that needs to be booted is > /boot/vmlinuz in the install > > CD. Question that I have (aside from making it a > boot CD) is how to get > > it to boot that image. > > > > Thanks in advance, > > > > Ron > > ./. > > > > > > > > If I wanted to make a bit-for-bit copy of my > (free) Mandrake 7.2 CD's > > > (install + extension), what would be the best > program to use? Note, I > > > have an IDE CD (which would read the source) and > a SCSI CD-R. I've > > > tried CDRecord, but it can't seem to find my IDE > CD. > > > > > > Thanks in advance, > > > > > > Ron > > > ./. > > __ Do You Yahoo!? Yahoo! Photos - Share your holiday photos online! http://photos.yahoo.com/
Re: [expert] Boot CD (was Bit-for-bit CD's)
You need a cdrom that is bootable. I have never been able to boot with an ide cdrom drive, however, my plextor cdrom drives on my scsi bus are bootable. I am in fact reminded often when I leave a linux cd in either cdrom drive and reboot my system. Tom Berkley "Ronald L. Chichester" wrote: > "Ronald L. Chichester" wrote: > > Okay folks, I figured out how to make a regular cd using mkisofs and > cdrecord (still couldn't get any of the GUI routines to work correctly, > but the command line routines are still available and still work). > > In any case, the last trick that I need is to get the install disk to > act as a boot disk. Is there some special incantation with cdrecord > that I need in order to make the install disk bootable? I DID read the > man page for cdrecord, but it wasn't terribly enlightening. I presume > that the image that needs to be booted is /boot/vmlinuz in the install > CD. Question that I have (aside from making it a boot CD) is how to get > it to boot that image. > > Thanks in advance, > > Ron > ./. > > > > > If I wanted to make a bit-for-bit copy of my (free) Mandrake 7.2 CD's > > (install + extension), what would be the best program to use? Note, I > > have an IDE CD (which would read the source) and a SCSI CD-R. I've > > tried CDRecord, but it can't seem to find my IDE CD. > > > > Thanks in advance, > > > > Ron > > ./.
Re: [expert] Boot CD (was Bit-for-bit CD's)
"Ronald L. Chichester" wrote: Okay folks, I figured out how to make a regular cd using mkisofs and cdrecord (still couldn't get any of the GUI routines to work correctly, but the command line routines are still available and still work). In any case, the last trick that I need is to get the install disk to act as a boot disk. Is there some special incantation with cdrecord that I need in order to make the install disk bootable? I DID read the man page for cdrecord, but it wasn't terribly enlightening. I presume that the image that needs to be booted is /boot/vmlinuz in the install CD. Question that I have (aside from making it a boot CD) is how to get it to boot that image. Thanks in advance, Ron ./. > > If I wanted to make a bit-for-bit copy of my (free) Mandrake 7.2 CD's > (install + extension), what would be the best program to use? Note, I > have an IDE CD (which would read the source) and a SCSI CD-R. I've > tried CDRecord, but it can't seem to find my IDE CD. > > Thanks in advance, > > Ron > ./.
