Cannot install any software on Fedora

Hi,

I cannot install anything on Fedora Live-CD. I wanted to install ddrescue in the memory (without installing Fedora on Hard Drive, just to use ddrescue once). But it looks like nothing happens. It does not show error, just blinking rectangle in terminal so I have to stop it by Ctrl+C.

[liveuser@localhost ~]$ sudo dnf install ddrescue ^CTerminated. [liveuser@localhost ~]$ sudo dnf install ddrescue ^CTerminated. [liveuser@localhost ~]$ sudo yum install ddrescue Yum command has been deprecated, redirecting to '/usr/bin/dnf install ddrescue'. See 'man dnf' and 'man yum2dnf' for more information. To transfer transaction metadata from yum to DNF, run: 'dnf install python-dnf-plugins-extras-migrate && dnf-2 migrate' ^CTerminated. [liveuser@localhost ~]$

Alternatives to ddrescue don't work for me:

[liveuser@localhost ~]$ sudo dd if=/dev/urandom of=/dev/sda conv=noerror,sync dd: writing to /dev/sda: Input/output error

So it looks like noerror only ignores errors in the input stream.

And I cannot use:

ddrescue --force /dev/urandom /dev/sda

because 'ddrescue' is not installed by default on LiveCD (which I use from pendrive).

How to temporarily install ddrescue in LiveCD session?

Cheers!

PS After about five minutes:

[liveuser@localhost ~]$ sudo dnf install ddrescue Error: Failed to synchronize cache for repo 'updates' from 'https://mirrors.fedoraproject.org/metalink?repo=updates-released-f22&arch=x86_64': Cannot download repomd.xml: Curl error (56): Failure when receiving data from the peer for ftp://ftp.mirrorservice.org/sites/dl...ata/repomd.xml [response reading failed]

Try

$: sudo dnf clean metadata

before trying to install ddrescue again.

I cannot install anything on Fedora Live-CD

and you will NOT be able
it is a live CD!!!!!


i take it you do not know HOW cd's and dvd's work

back in 1998 it was common for people not to know how the newish cd-rw's worked
but cd-r has around since 1990

also fedora dose not use and never WILL use ( as default) " sudo"

fedora defaults to using "su " and "su -"

it dose NOT use "sudo"

Originally Posted by John VV and you will NOT be able it is a live CD!!!!! i take it you do not know HOW cd's and dvd's work back in 1998 it was common for people not to know how the newish cd-rw's worked but cd-r has around since 1990 also fedora dose not use and never WILL use ( as default) " sudo" fedora defaults to using "su " and "su -" it dose NOT use "sudo"

Odd. Sudo works perfectly well on Fedora 22 for me.

I also took the OP's post to mean that since he's using a USB drive ("a pendrive"), the new app would be temporarily loaded into the ramdisk to run (as he says in the first line of his post) and possibly writing to an archive on the USB drive. Which is perfectly possible.

Originally Posted by John VV and you will NOT be able it is a live CD

Rubbish.

Thanks for your all answers!

Originally Posted by Beau Nash Try $: sudo dnf clean metadata before trying to install ddrescue again.

I think that could be very useful, but on already installed system. In case of LiveCD everything is fresh so no metadata would be cleaned. It did not help in this case.

Originally Posted by John VV and you will NOT be able it is a live CD!!!!!

According to Fedora LiveCD documentation here (https://fedoraproject.org/wiki/FedoraLiveCD) it should be possible:

A booted Live CD uses a temporary, in-memory, read-write rootfs, so it's possible to install software for use while the Live CD is running.

It also indicates that it should be written in-memory. I know that application that can install Ubuntu LiveCD on pendrive from Windows asks how much space on pendrive will be used to persist data between running LiveCD sessions. I don't know about Fedora LiveCD on pendrive. Does it use all available space if session persistence is turned on (how to turn it on)? Or isn't this feature available and everything is installed directly in RAM?

But anyway, installing software from Fedora installed on hard drive works well. But the same command run from Fedora LiveCD fails (as mentioned in my first post).

Similar thing was reported on Bugzilla for RedHat (https://bugzilla.redhat.com/show_bug.cgi?id=1219283) but unfortunately this bug report does not help me much.

How can I fix this problem with installing things to RAM on Fedora LiveCD?

Any advises welcome!