lubuntu-desktop team mailing list archive

[Phillip Whiteside <phillw@xxxxxxxxxx>]

Hi Bob,

you can use md5sum from the command line to check the downloaded iso. If
you're a bit rusty on the command
http://forum.phillw.net/viewtopic.php?f=18&t=94 has the 10.04 version, just
change the file name.

To check the CD you'd need to know the size of the iso file (I haven't
downloaded it yet) and divide it by 2048, that would then be the figure for
count in the dd check

For the 10.04 release, the filesize is 546285568 and 546285568 / 2048 =
266741 so the command is.

dd if=/dev/cdrom bs=2048 count=266741 | md5sum

It is all covered in detail at
https://help.ubuntu.com/community/HowToMD5SUM The
reason for using the block size of 2048 is that it makes the checking of the
cd much faster than using a block-size of one (try it some time !!), that
document also explains why you cannot just do md5sum /dev/cdrom.


<https://help.ubuntu.com/community/HowToMD5SUM>
Regards,

Phill.

On Mon, Jul 5, 2010 at 12:41 PM, Bob Trevithick <bob.trevithick@xxxxxxxxx>wrote:

> Hi Phill,
>
> The ISO I'm using is the one Julien pointed us to in this list.  The
> Maverick beta:
>
> Torrent:
> http://people.ubuntu.com/~gilir/lubuntu-maverick-alpha2.iso.torrent
> Download:
> http://people.ubuntu.com/~gilir/lubuntu-maverick-alpha2.iso
> Md5sum:
> http://people.ubuntu.com/~gilir/md5sum.txt
>
> Isn't that the one we're all working with at this point?  If not, then
> I'm more confused than I realized. :)
>
> Regards,
> Bob
>
> On Sun, Jul 4, 2010 at 10:51 PM, Phillip Whiteside <phillw@xxxxxxxxxx>
> wrote:
> > Hi Bob,
> > does the iso that you are using pass the md5?
> > If you're using the https://wiki.ubuntu.com/Lubuntu#DownloadLubuntu then I
> > can ask as to how the iso burns to a usb with checking the md5.
> > Regards,
> > Phill.
> >
> > On Mon, Jul 5, 2010 at 2:49 AM, Bob Trevithick <bob.trevithick@xxxxxxxxx
> >
> > wrote:
> >>
> >> Okay, I'll try to wrap my head around the whole problem and see if I
> >> can write it up coherently.. after a bit of sleep. :)
> >>
> >> In the meantime, with the USB install, I have the same issues I noted
> >> in my opening post.. and looking at the USB stick I notice that the
> >> boot.cat file still has the wrong md5sum (if that's relevant.)  So, my
> >> initial post still stands if any of those things are of interest at
> >> the moment.
> >>
> >> Tomorrow I'll see precisely what it takes to overcome the dim display
> >> problem.  And I have to sort out wireless and a few other things.  Let
> >> me know, please, what would be most useful to you folks at this stage.
> >>
> >> Night,
> >> Bob
> >>
> >> On Sun, Jul 4, 2010 at 9:33 PM, Phillip Whiteside <phillw@xxxxxxxxxx>
> >> wrote:
> >> > Hi Bob,
> >> > If the CD is not burned at 4X speed, it can cause horrors. In 9.10 I
> >> > could
> >> > burn at that rate, in 10.04 I cannot. As a part of these 'funnies'
> that
> >> > happen, one of the tech guys told me that he could not burn at 4X in
> >> > 9.10
> >> > but can do in 10.04 .....
> >> > I have learned to 'cheat' and use CD-RW's or DVD-RW's which keeps the
> >> > burn
> >> > speed down.
> >> >
> >> > Oh, and I've used brassero etc., it seems to be a kernel issue but one
> >> > that
> >> > is really hard to nail down.
> >> > Regards,
> >> > Phill.
> >> > On Mon, Jul 5, 2010 at 2:13 AM, Bob Trevithick
> >> > <bob.trevithick@xxxxxxxxx>
> >> > wrote:
> >> >>
> >> >> Sure, I can write up a version for Maverick, as soon as I understand
> >> >> what's actually happening with the whole process.  I mean, I took
> >> >> Andy's advice and made a bootable USB stick instead (much faster than
> >> >> the CD.. glad I learned about that) but I still don't know why the CD
> >> >> burn process is causing errors, etc.
> >> >>
> >> >> On Sun, Jul 4, 2010 at 8:27 PM, Phillip Whiteside <phillw@xxxxxxxxxx
> >
> >> >> wrote:
> >> >> > Those instructions are solely for the 10.04 disk, if you are using
> a
> >> >> > different installation method then the check sum will be different.
> >> >> > If you pop over to the
> >> >> > thread http://forum.phillw.net/viewtopic.php?f=18&t=94 that gives
> the
> >> >> > 10.04
> >> >> > release, I would need to update it for the release levels for the
> >> >> > alphas, or
> >> >> > I could give you the instructions as to how to write them :p
> >> >> > Possibly the md5 | cdrom command may be easier for people, as it
> only
> >> >> > requires the md5 sum to check against.
> >> >> > Regards,
> >> >> > Phill.
> >> >> >
> >> >> > On Mon, Jul 5, 2010 at 12:56 AM, Bob Trevithick
> >> >> > <bob.trevithick@xxxxxxxxx>
> >> >> > wrote:
> >> >> >>
> >> >> >> Ah, well, hmm.  I don't get the correct md5sum according to this
> >> >> >> method either, Phill.
> >> >> >>
> >> >> >> bob@ub32:~$ dd if=/dev/cdrom bs=2048 count=266741 | md5sum
> >> >> >> 0e9fac900c8288b243e875d9b1b65479  -
> >> >> >> 266741+0 records in
> >> >> >> 266741+0 records out
> >> >> >> 546285568 bytes (546 MB) copied, 112.087 s, 4.9 MB/s
> >> >> >>
> >> >> >> So, I tried yet another approach and burned one with Nautilus as
> per
> >> >> >> the instructions.  For the first time, I got an actual error
> during
> >> >> >> the burn.  It didn't tell me what was wrong, but at least it
> alerted
> >> >> >> me to the burning error.
> >> >> >>
> >> >> >> Okay, I've tried to burn this on three different machines, using
> >> >> >> three
> >> >> >> different burning applications, and two different types of blank
> >> >> >> CDs.
> >> >> >> Maybe I'm not cut out for this kind of work. ;-)
> >> >> >>
> >> >> >> I'll download the 32-bit alternate CD, do a command-line install,
> >> >> >> and
> >> >> >> then apt-get the lubuntu-desktop package.  That should give me the
> >> >> >> same thing I'm trying to do here, right?
> >> >> >>
> >> >> >> Thanks!
> >> >> >>
> >> >> >> Regards,
> >> >> >> Bob
> >> >> >>
> >> >> >> On Sun, Jul 4, 2010 at 7:32 PM, Phillip Whiteside
> >> >> >> <phillw@xxxxxxxxxx>
> >> >> >> wrote:
> >> >> >> > dd if=/dev/cdrom bs=2048 count=266741 | md5sum
> >> >> >>
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