Re: corrupted x32 Fedora 14 DVD

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Mon, 2010-11-08 at 21:48 +0300, perfectday@xxxxxxx wrote:
> i've downloaded Fedora 14 DVD for x32 a few times and the iso always
> corrupted. When i check the iso before installing Fedora it says:
> "The image which was just tested has errors. This could be due to a
> corrupt download or a bad disc. If applicable, please clean the disc
> and try again. If this test continues to fail you should not continue
> the install." and i can't to install.

I suspect you downloaded it fine, but the burn was bad.  This is the
usual case, often remedied by two things:  Buying better discs, and
burning at a slower speed.

Did you test the downloaded file, before you burnt it?  That's part of
what the checksum is for:  (a) Verify that you've downloaded the same
image file that Fedora project has built, and not someone's trojaned
alternative version of it.  And (b) Verify that what you've downloaded
hasn't got corrupted when you downloaded and saved it.

  See:  https://fedoraproject.org/en/verify  

On that page, the links for the different versions are the checksum
files for those versions.  i.e. The first i386 link is the checksum for
checking the i386 install/rescue DVD.  Then, as the page briefly
details, with inadequate explanation, you check that the checksum is
fine, then you check your downloaded install ISO file against the
checksum.

But it can also be that the install routine's "disc test" failed.  For
several years there's been an ongoing debate about how bad that test is,
yet the default test never gets fixed up to something better.

So, in summary:

     1. Download your ISO (just try with what you've already got,
        first).
     2. Check the ISO is okay.  If not, re-download.
     3. Burn on good discs, not at a gazillion times speed.
     4. Boot the install, and take the disc test results with a pinch of
        salt.

If you've never really had a problem with burning dud discs before, I
wouldn't expect burning the install disc to be any different.  If you
have had quite a few bad discs, then I'd try and resolve that problem,
properly, rather than cross your fingers and hope for the best.  

Cheap discs are cheap for a reason.  Certain brands are better than
others (I've only ever had one bad batch of Verbatim discs).  I've seen
some brands which people have believed, for unknown reasons (probably
recommendations by unscrupulous shopkeepers), were a good brand, when
they certainly are not (e.g. "Laser" brand).  Certain brands are more
compatible with some drives, than others.  Certain types of discs are
better with certain drives.  e.g. DVD+R discs can, technically, be
superior to DVD-R discs, but it's also going to depend on the drive.

The same issues with /some/ discs applies for /some/ drives...  There
are crap drives.  Drives do wear out, some quicker than others.  Muck
getting into the drive doesn't help (dust, smoke, aerosol sprays).  Most
of those cleaner discs which have a brush stuck onto them (that will
whack into the lens as the disc spins around) will cause more problems
than they cure.

-- 
[tim@localhost ~]$ uname -r
2.6.27.25-78.2.56.fc9.i686

Don't send private replies to my address, the mailbox is ignored.  I
read messages from the public lists.



-- 
users mailing list
users@xxxxxxxxxxxxxxxxxxxxxxx
To unsubscribe or change subscription options:
https://admin.fedoraproject.org/mailman/listinfo/users
Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines


[Index of Archives]     [Current Fedora Users]     [Fedora Desktop]     [Fedora SELinux]     [Yosemite News]     [Yosemite Photos]     [KDE Users]     [Fedora Tools]     [Fedora Docs]

  Powered by Linux