fedora 20 to 21

[Sam Varshavchik]

Patrick Dupre writes:

> Hello,
>
> I wish to update a fedora 20 installation to 21 by using a DVD.
> Is it possible?

Yes.

> Actually, I burn a DVD bootable server fedora 21, but I did not find
> the option update.
> When I go to installation
> then System, I can select my hard drive and manually partitioning
> I can see the installed system (/ /boot and swap)
> I can install fedora 21 but not on the same partition (I can reuse /boot)
> I have to install it on a new /
> I cannot have a mounting point / on the old fedora /
> This seems to indicate that I cannot upgrade from this DVD.
> How do you update a fedora 20 without network?

Boot Fedora 20, first. The existing Fedora 20 server must be up to date with  
the latest packages installed, including the "fedup" package.

Run the fedup command and use the --device option.

See  
https://fedoraproject.org/wiki/FedUp#How_Can_I_Upgrade_My_System_with_FedUp.3F
for more information.

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