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Re: MD5/Check Cd passes, install dies



On 3/23/06, Kevin H. Hobbs <kevin hobbs 1 ohiou edu> wrote:
> On Thu, 2006-03-23 at 08:25 -0500, Mark Haney wrote:
> > I was all ready to run with upgrading my FC4 boxes to FC5 last night at
> > home after doing several at work.  I burned the i386 DVD (which wasn't
> > used here at work since we only have 64-bit) and took it home.  K3b
> > passed the checksum when burning, the installer Disc Test passed the
> > DVD, but when starting the actual upgrade process it got to the first
> > package (gtk+ or something) and errored out saying the package was
> > corrupt or the disc was bad.  Has anyone seen this on FC5 other than myself?
> >
> > --
>
> k3b calculates an md5sum on images when and makes a happy little check
> next to the sum when it's done.  This doesn't really mean anything
> because any old junk will have an md5sum.  k3b does have a verify burned
> cd button that compares the CD to the ISO, but again this doesn't mean
> anything since you could have just burned a good copy of junk data.
>
> A file is distributed with the ISOs called SHA1SUM that contains
> checksums of the ISOs. You can check all the files at once with :
>
> sha1sum --check SHA1SUM
>
> However the checksums in SHA1SUM could be garbage or forged so that file
> is gpg signed. You can check it with :
>
> gpg --verify SHA1SUM
>
>

Assuming the drive that you used to install FC5 is not the one that
you used to burn the discs. Here are things you can do:

1) burn the discs at a slower speed  (e.g. 4X instead of 8X),

2) use a different brand of media, or

3) use DVD+R in place of DVD-R.


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