(solved) could not boot the dvd created using mylivecd

[ravi_npatty]

Dear All,

  I was using mylivecd successfully till Nov-2010. After that I gave a long gap. (I gave long gap only for backing up my system, but I was regularly upgrading my system during this period). When I tried to remaster my system using mylivecd, image was created, but I could not boot after writing that to a disc (I could/did not find the reason for failure at this stage). There was no error reported after writing the disc.

  Then I searched this forum and saw that the script uses xz compression by default and xz needs kernel 2.6.38, so I upgraded the kernel to the latest available (kernel-2.6.38.8-pclos1.bfs). I tried to remaster using xz, but no success. I tried using gzip, again no success. (At this stage I noticed the error in booting by using no boot splash option. Error is failed to mount livecd).

I had unmounted all the partitions except root during all the remasters. I have sufficient free space in my root partition.  Running df gives the following,
[myusername@localhost ~]$ df
Filesystem            Size  Used Avail Use% Mounted on
/dev/sda9              50G  9.6G   38G  21% /

Every time I get iso file successfully, but could not boot using it.

Since I wasted about 5 discs in this process, I tried using unetbootin. From pendrive also, the image refuses to boot quoting the same error (unable to mount livecd).

After that I tried to boot using the iso in virtualbox. To my surprise, it was successful this time.

My cd/dvd drive is working properly. It is successfully writing and booting the original iso file downloaded from pclinuxos.com.

I don't know where I am making mistake. Please somebody help me.

[AS]

Hi,

What have you used to boot in virtualbox ? the ISO image file or a pass-through CD/DVD unit ?
If virtualbox was successful using the ISO file, then very probably you are experiencing a burning problem on the DVD media ...

AS

[ravi_npatty]

I used the iso file in virtualbox.

Since I am able to write and boot downloded iso file, I think my cd/dvd drive is OK. But it should be working with pendrive (unetbootin), I guess. Please somebody guide me whether I can depend on unetbootin or not.

[ravi_npatty]

If virtualbox was successful using the ISO file, then very probably you are experiencing a burning problem on the DVD media ...
AS

Yes you are right. I thought my drive is OK since it is loading downloaded CD. I tried my older remaster dvds which were working. My drive failed to detect many of them. I tried to test the recent disc, which I was thinking not working in my friend's computer. There it was working without any problem.

UNetBootIn actually mislead me. I thought that I can use unetbootin to boot my remasters. But it is not working even with my older remasters.
I mark this as solved, since it is my drive problem.