FC6 upgrade from FC4 trouble accessing rpms/dvd

[David Timms]

pd520 at york.ac.uk wrote:
> I did try to upgrade a FC4 to FC6 but anaconda failed. I am uisng the 
> Rescude CD and then the fedora6.iso
Why didn't you boot the f6 dvd directly ?

> The DVD has been checked.
Is that using media check ?

> I can 
> eventually access to the fc6.rpm files but anaconda fails. At one poin 
> the /tmp/cdrom is mounted on /mnt/source but then the DVD is dismounted. 
> anaconda complains on 
> ///mnt/source/Fedora/RPMS/firefox-1.5.7-7.fc6.i386.rpm, 
What was the message exactly ?

> I guess that it 
> is just because it is the first file to update.
I doubt firefox would be first - from memory, I think it does underlying 
requirements first - eg libs etc.

Checking the virtual terminals on ctrl-alt-3, 4 might provide some error 
messages {that we can translate} ?

I wouldn't be surprised if a combination of dvd drive, disc, age and 
temperature are causing issues during extended reading of the dvd.

A different way to check the DVD is on the machine you are trying to 
upgrade:
- boot the old fc4
- dd if=/dev/dvd of=/tmp/f6-dvd.iso
- sha1sum  f6-dvd.iso
compare that to the published checksums for that disc.
This does do sequential reads, rather than the random reads that the 
installer would do.

My preferred way is to use the hard drive upgrade method {this gets 
around even needing a working dvd disc/drive at all}:
- ensure you have a partition that can hold the dvd.iso file {that isn't 
lvm nor raid}.
- put the dvd.iso file in the root of that partition
- mount and copy the dvd/images/pxeboot/ vmlinuz and initrd.img to /boot/
- create a new /boot/grub/grub.conf boot entry for:
title Fedora 6 upgrade
         kernel /vmlinuz
         initrd /initrd.img
- Reboot, selecting that entry.
- choose method-hard drive
- select the correct partition by name/number, path=/
 From there it should be a normal upgrade.

DaveT.