Ubuntu

Make Startup CD

Asked by Iqbal

Hi,
I downloaded iso image of ubuntu 9.10. Checked its hash, it was correct. Extracted it in a folder. Then burned all the files in a CD with Brasero Disk Burner.

I tried to boot from CD, but system does not boot from CD. While burning, Brasero had no option to make the cd bootable. I think the cd isn't bootable. How can I make this CD bootable using ubuntu?

When I use Disk Utilities in ubuntu, it also does not show an option to make it bootable.

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Vu Do Quynh (vu-do-quynh) said : 		#1

Hi,

There is a difference between burning several files to a blank CD and burning an iso file to a CD.

If you use Ubuntu, the easiest thing is to locate the iso file (after checking its integrity with a md5sum check), then right-click on it and select "Burn to disc...".

Or, you open Brasero and select "Burn an iso image file" (or something like that), then you go to select your iso file.

Hope that helps

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Iain Brown Douglas (iain-browndouglas) said : 		#2

You have got BIOS set to look for boot from CD first?

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Iqbal (naqvi-iqbal2001) said : 		#3

Hi,
Your answer seems working, I would try it.
But my question is, I have CD with ubuntu files. It is not bootable. I want to make it bootable. Is there a command or utility which could make it bootable.

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Iain Brown Douglas (iain-browndouglas) said : 		#4

Iqbal, I don't think there is anything you could do to the CD to make it bootable! It is either correctly made or it is wrong.
Tell me the result of looking in BIOS.

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Vu Do Quynh (vu-do-quynh) said : 		#5

Hi,

If you have already burned files on a CD, I do not think it is possible to make that CD bootable because when you start to write/burn a blank CD, the Master boot record of the CD will be created. And as a CD is usually read-only (excepted for multisession CDs), you can't modify the initial settings.

If you want to make a CD bootable, you need to do it at the moment of its creation. You may search for information on making bootable CDs under Linux on the web like these (a little bit outdated maybe?)

http://www.linux.org/docs/ldp/howto/Bootdisk-HOWTO/cd-roms.html
http://tldp.org/LDP/LG/issue85/sipos.html

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