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Old 06-20-2009, 11:56 PM   #16
joseph2020
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Registered: Mar 2009
Location: USA
Distribution: Ubuntu 12.04
Posts: 235

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someone Awesome:
Quote:
this might be a silly suggestion but you could download the iso from ubuntu's website
micxz,
Quote:
Someone Awesome has got a point here get a fresh iso
Not a silly suggestion at all except that my laptop (with wifi/hi-speed connection) is broken, and my desktop at home (now using) can only use 56k dialup connectivity...693 MB at (almost)56k dialup speeds?...The last time I looked it was 17 hours at best....worst case over 30 (true time somewhere between those) for the Ubuntu DL. no can do. I sincerely appreciate your efforts, and am still open to any suggestions or ideas.
 
Old 06-21-2009, 12:04 AM   #17
joseph2020
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Distribution: Ubuntu 12.04
Posts: 235

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Thanks again

Last edited by joseph2020; 06-21-2009 at 12:12 AM. Reason: repost fault
 
Old 06-21-2009, 01:01 AM   #18
micxz
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how about a thumb drive
 
Old 06-21-2009, 02:09 PM   #19
azc
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Registered: Dec 2005
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Joseph,

First, the ISO you made from the CD is most likely not too big. Try this:
Code:
$ ls -alh filename.iso
And I'll bet that it's under 700MB.

Now you may want to verify that the CD and ISO file match the official MD5SUM.
Just go to an Ubuntu mirror, for example the MD5SUMs for Ubuntu-8.10:

http://mirrors.cat.pdx.edu/ubuntu-releases/8.10/MD5SUMS

To check the CD MD5SUM, use the following:
Code:
$ dd if=/dev/scd0 | head -c `stat --format=%s filename.iso` | md5sum
(Replace '/dev/scd0' with your particular device.)

And to check the MD5SUM of the ISO file is simply:
Code:
$ md5sum filename.iso
Assuming everything looks OK, try a test CD burn. For example, on my Ubuntu-8.04.2 I would try this on a CD-R:
Code:
$ wodim -dummy -v -dao -eject speed=16 driveropts=burnfree dev=/dev/scd1 -data filename.iso
Note: To check your driver options, use:
Code:
$ wodim dev=/dev/scd1 driveropts=help -checkdrive
(...)
Driver options:
burnfree        Prepare writer to use BURN-Free technology
noburnfree      Disable using BURN-Free technology
forcespeed      Tell the drive to force speed even for low quality media
$
(Adjust the speed and device to your machine, of course)

If you are using CD-RW's, and there was previously data, then it may have been automatically mounted and will need to be unmounted before it can be blanked and recorded. For example:
Code:
$ df -h
Filesystem            Size  Used Avail Use% Mounted on
(...)
/dev/scd1             698M  698M     0 100% /media/cdrom1
$ 

$ sudo umount /media/cdrom1

$ wodim -v -eject -speed=2 blank=fast dev=/dev/scd1
Now, if things seemed to go fairly well, try the wodim command without the '-dummy' option.

And if it seems to burn OK, you can verify the MD5SUM of the new CD as mentioned above.

Hang in there - this stuff is confusing at first, but you'll get the hang of it.
 
Old 06-21-2009, 04:30 PM   #20
joseph2020
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Registered: Mar 2009
Location: USA
Distribution: Ubuntu 12.04
Posts: 235

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azc, THANK YOU!! I think you got it! here are preliminary results:
Code:
joe@joelinux:~$ ls -alh ubuntu81.iso
-rw-r--r-- 1 joe joe 694M 2009-06-19 21:33 ubuntu81.iso
joe@joelinux:~$
I will try all your idea later when I come back from doing some chores. Thanks again
 
Old 06-23-2009, 11:29 PM   #21
joseph2020
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Registered: Mar 2009
Location: USA
Distribution: Ubuntu 12.04
Posts: 235

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time to move on

Even though it seemed like it was working, after 10 minutes of supposed writing the cd turned out blank (twice). I have had enough of this.

I appreciate all your efforts for those of you who tried to help. This will be my last post on this topic.
 
  


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