devdump: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On CentOS possible default full paths are:

/usr/bin/devdump - from package: wodim

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/bin/devdump - from package: genisoimage

You may install the required package with command apt-get install {package}

Error in other languages:
devdump: bevel nie gevind nie
devdump: comandă negăsită
devdump: comando não encontrado
devdump: commande introuvable
devdump: command not found
devdump: käsku ei ole
devdump: không tìm thấy lệnh
devdump: komanda nerasta
devdump: Kommando nicht gefunden.
devdump: kommandot finns inte
devdump: komut yok
devdump: nie znaleziono polecenia
devdump: níor aimsíodh an t-ordú
devdump: no se encontró la orden
devdump: no s'ha trobat l'ordre
devdump: opdracht niet gevonden
devdump: parancs nem található
devdump: perintah tidak ditemukan
devdump: príkaz nenájdený
devdump: příkaz nenalezen
devdump: команда не найдена
devdump: командата не е открита
devdump: 命令找不到
devdump: コマンドが見つかりません