hi luggerz some of u might laugh on this but.... have a prob, i tried writing a RH installation cd on a blank cd, but the new cd is'nt bootable.... now how do i make those CDs bootable?? to write CDs i was using windows and the HP application 'coz the writer is not mine and the system that has the writer is not mine, so have to bare up. plz comment Gurpreet
i tried writing a RH installation cd on a blank cd, but the new cd is'nt bootable.... now how do i make those CDs bootable??
did you use drag-n-drop to add files/folders?? Did you use HP MyCD?? Did you use "Copy CD" option from HP MyCD??
HP MyCD is hopeless.... Try using Nero/Adaptec... Even then, there could be problems, unless you're trying to make an exact copy of the CD....
Otherwise follow a long procedure...
In Linux, you can create an ISO Image of a CD using dd as
$ dd if=/dev/cdrom of=/path-to-iso-file/filename.iso
Then use this ISO image to burn a CD. This ISO image will have all the properties of the original CD including the volume ID (i.e volume label).
Hi, Just diverting the discussion a bit. Can someone tell me what difference it makes in burning an iso image and just merely copying files from a CD to another one? How does it affect the CD properties like whether it is bootable? - Nikhil. --- Kunal Gangakhedkar kgangakhedkar@hotpop.com wrote:
i tried writing a RH installation cd on a blank
cd,
but the new cd is'nt bootable.... now how do i make those CDs bootable??
did you use drag-n-drop to add files/folders?? Did you use HP MyCD?? Did you use "Copy CD" option from HP MyCD??
HP MyCD is hopeless.... Try using Nero/Adaptec... Even then, there could be problems, unless you're trying to make an exact copy of the CD....
Otherwise follow a long procedure...
In Linux, you can create an ISO Image of a CD using dd as
$ dd if=/dev/cdrom of=/path-to-iso-file/filename.iso
Then use this ISO image to burn a CD. This ISO image will have all the properties of the original CD including the volume ID (i.e volume label).
-- Kunal Gangakhedkar
MCA Student @ VJTI
kunal@vjtimca.net kgangakhedkar@softhome.net kgangakhedkar@hotpop.com
The monitor is plugged into the serial port
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Nikhil Kale nixunix@yahoo.com wrote:
Just diverting the discussion a bit. Can someone tell me what difference it makes in burning an iso image and just merely copying files from a CD to another one? How does it affect the CD properties like whether it is bootable?
Same way as the difference between copying files from one hard disk to another and imaging a hard drive onto another. The boot records get copied when you image the whole hard disk. You cannot simply copy and paste the boot records as you do with files.
Nilesh.
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On Tue, 2002-09-17 at 13:24, Nilesh Chaudhari wrote:
Nikhil Kale nixunix@yahoo.com wrote:
Just diverting the discussion a bit. Can someone tell me what difference it makes in burning an iso image and just merely copying files from a CD to another one? How does it affect the CD properties like whether it is bootable?
Same way as the difference between copying files from one hard disk to another and imaging a hard drive onto another. The boot records get copied when you image the whole hard disk. You cannot simply copy and paste the boot records as you do with files.
Nilesh.
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Hi,
I also has the same problem with a ISO downloaded from one of the mirror i guess gd.tuwein ... the ISO itself wasnt bootable so i scrapped that iso and downloaded the one located @ db.ilug-bom.org.in and this ISO works fine ........
It doesnt matter which software you choose while writing ISO images, Easy CD, Nero or cdrecord all of them will write the image in the same fashion, so its not the fault of the CD writing software its the fault of ISO Image creator....
So those who have got a non-bootable ISO Images get another one frm alternative mirrors.
Hi, Just diverting the discussion a bit. Can someone tell me what difference it makes in burning an iso image and just merely copying files from a CD to another one? How does it affect the CD properties like whether it is bootable?
Well, first of all, the filesystem on a CD-ROM disc is ISO9660 format. It is not the same as a computer filesystem. It was originally designed in the Red Book specification for Audio CDs with extensions or modifications defined in other specification docs like orange book / yellow book.
Because of the incompatibility of the ISO9660 filesystem with a normal computer filesystem, it becomes difficult to capture all the properties of the CD on a computer filesystem. Hence you have special utils which let you browse through the ISO filesystem like ISOBuster on Windows.
Fortunately, the mount command on *NIX has an ISO filesystem driver which allows you to mount the ISO filesystem in the regular filesystem. This, then, behaves as though it is part ot the computer filesystem. But an Audio CD still cannot be mounted, because it does not contain computer data as such - it contains music data.
Due to historical reasons or widely used formats, they retained the ISO9660 filesystem even for computer CD-ROMs. But, again, as the technology progressed, they found the basic ISO9660 filesystem inadequate. So, they came up with modifications in the basic ISO filesystem such as different modes to write CDs, Rock-Ridge extensions, Joliet Extensions(Microsoft's contribution for LFN Support), CD-I extensions using Mode-2 XA format. All these extensions are given in the later colour books.
These extensions allow you to create bootable CDs, but the base filesystem is still ISO9660 with 2048KB block size - which I said is incompatible with a computer filesystem. Hence to retain all the characteristics of the original CD, you need to dump it either with dd on *NIX or some such util on Windows.
Most CD-Writing softwares can create such images. but each one has got special format of its own. The safest bet is ISO9660 which is supported by almost all the CD-Writing softwares. BTW, ISO9660 filesystem is very rigid.
After the introduction of ReWritable CDs, there was a need for a filesystem which could be modified on the fly. This is not allowed by ISO9660. Hence, there was another varient developed for RW discs called as UDF or Universal Disc Format. UDF allows writing CDs on the fly by drag-n-drop mechanism on Windows. It needs special mounting software though. This method of writing CDs is called Packet Writing.
I still haven't found any such software for Linux as yet.
-
Gurpreet Singh -
Kunal Gangakhedkar -
Mitul Limbani -
Nikhil Kale -
Nilesh Chaudhari