I want to write an existing ISO file to a CD using C. I am using an
array of 256 bytes to read characters from the ISO file and trying to
write it to the block file /dev/sr0. But I am getting the error
message "No disk space present", even though I have checked that the
CD is a blank one. Can anybody suggest why this is not working?
I would be grateful if somebody could offer some advice on this matter.
Thanks for reading this!.
Arani
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Arani Bhattacharya wrote:
> On Fri, Mar 5, 2010 at 4:01 PM, G T Smith
> <grahamsmith(a)gandalfsemporium.homelinux.com> wrote:
> Per Jessen wrote:
>>>> Arani Bhattacharya wrote:
>>>>
>>>>> I want to write an existing ISO file to a CD using C. I am using an
>>>>> array of 256 bytes to read characters from the ISO file and trying to
>>>>> write it to the block file /dev/sr0. But I am getting the error
>>>>> message "No disk space present", even though I have checked that the
>>>>> CD is a blank one. Can anybody suggest why this is not working?
>>>>>
>>>>> I would be grateful if somebody could offer some advice on this
>>>>> matter.
>>>> AFAIK, you need to use a special IO interface or library for burning a
>>>> CD. Look up existing applications for burning CDs, there are various
>>>> tools out there. I'm sure I've come across a library for that kind of
>>>> thing in the past.
>>>>
>>>>
>>>> /Per Jessen, Zürich
>>>>
> Yes, plus a little research in CD colour book formats, CD/DVD layouts,
> and the ISO 9660 standard. There is a bit more to an ISO image than raw
> data, and IIRC there are restrictions on what you can write where on a
> CD/DVD, and your image has to be written to a writable area if you do
> not want to increase your coaster collection.
>
>
>
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>>
>>
> Thanks for your help. I have gone through the ISO 9660 standard. About
> writing to a writable area, could you please show me some resource
> (such as URL or book) where I may learn more from it? Most of the
> resources that I have seen (such as tldp) are quite dated.
CDs are an old technology (c.1982) ... the standards used have not
changed much in last decade or so ...
http://www.usbyte.com/common/compact_disk.htm
and
http://fy.chalmers.se/~appro/linux/DVD+RW/tools/
might be a useful starting points. There are differences between DVD and
CD structures, the former tend to use a simplified variant of the latter...
BTW Please respond to the list. Many people will ignore off list
responses ... and others may be in a position to respond quicker..
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