ocs-lvm2-start: command not found

Have You tried accessing the binary with the full path?

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 Debian possible default full paths are:

/usr/sbin/ocs-lvm2-start - from package: clonezilla

You may install the required package with command apt-get install {package}
Error in other languages:
ocs-lvm2-start: bevel nie gevind nie
ocs-lvm2-start: comandă negăsită
ocs-lvm2-start: comando não encontrado
ocs-lvm2-start: commande introuvable
ocs-lvm2-start: command not found
ocs-lvm2-start: käsku ei ole
ocs-lvm2-start: không tìm thấy lệnh
ocs-lvm2-start: komanda nerasta
ocs-lvm2-start: Kommando nicht gefunden.
ocs-lvm2-start: kommandot finns inte
ocs-lvm2-start: komut yok
ocs-lvm2-start: nie znaleziono polecenia
ocs-lvm2-start: níor aimsíodh an t-ordú
ocs-lvm2-start: no se encontró la orden
ocs-lvm2-start: no s'ha trobat l'ordre
ocs-lvm2-start: opdracht niet gevonden
ocs-lvm2-start: parancs nem található
ocs-lvm2-start: perintah tidak ditemukan
ocs-lvm2-start: príkaz nenájdený
ocs-lvm2-start: příkaz nenalezen
ocs-lvm2-start: команда не найдена
ocs-lvm2-start: командата не е открита
ocs-lvm2-start: 命令找不到
ocs-lvm2-start: コマンドが見つかりません