Hello, I am trying to create a virtualbox image from my stretch system.

But I hve two problems :)

I took your example from the DiskImage property, but in the end, I got this

/srv/diskimages/soleil.img.chroot no services started ... ok /srv/diskimages/soleil.img.chroot has Operating System (Debian Linux Unstable) X86_32 ... ok /srv/diskimages/soleil.img.chroot apt installed linux-image-i686 ... ok /srv/diskimages/soleil.img.chroot grub package installed ... ok /srv/diskimages/soleil.img.chroot root has insecure password ... done /srv/diskimages/soleil.img.chroot account for soleil ... ok /srv/diskimages/soleil.img.chroot soleil has insecure password ... done /srv/diskimages/soleil.img.chroot user soleil in group audio ... ok /srv/diskimages/soleil.img.chroot user soleil in group cdrom ... ok /srv/diskimages/soleil.img.chroot user soleil in group dip ... ok /srv/diskimages/soleil.img.chroot user soleil in group floppy ... ok /srv/diskimages/soleil.img.chroot user soleil in group video ... ok /srv/diskimages/soleil.img.chroot user soleil in group plugdev ... ok /srv/diskimages/soleil.img.chroot user soleil in group netdev ... ok /srv/diskimages/soleil.img.chroot user soleil is in standard desktop groups ... ok /srv/diskimages/soleil.img.chroot cache cleaned ... ok 0 0% 0.00kB/s 0:00:00 (xfr#0, to-chk=0/3) 930 0% 1.77kB/s 0:00:00 (xfr#3, to-chk=0/11069)
chroot: impossible d'exécuter la commande « update-initramfs »: No such file or directory loop deleted : /dev/loop0

I will try to add the pacakge which contain update-initramfs and report back

the second problem is thaht virtualbox is no more part of stretch. So it is not possible to create a virtualbox image.