root@ziomario-desktop:~/Scrivania/qemu-x86# sudo rm -rf chroot-stretch-i386_/*

root@ziomario-desktop:~/Scrivania/qemu-x86# sudo debootstrap --foreign --arch i386 stretch ./chroot-stretch-i386/ http://ftp.us.debian.org/debian

W: Cannot check Release signature; keyring file not available /usr/share/keyrings/debian-archive-keyring.gpg

I: Retrieving InRelease
I: Retrieving Release
I: Retrieving Packages
I: Validating Packages
I: Resolving dependencies of required packages...
I: Resolving dependencies of base packages...
I: Found additional required dependencies: libaudit-common libaudit1 libbz2-1.0 libcap-ng0 libdb5.3 libdebconfclient0 libgcrypt20 libgpg-error0 liblz4-1 libncursesw5 libsemanage-common libsemanage1 libsystemd0 libudev1 libustr-1.0-1
I: Found additional base dependencies: dmsetup gnupg-agent libapparmor1 libassuan0 libbsd0 libcap2 libcryptsetup4 libdevmapper1.02.1 libdns-export162 libelf1 libfastjson4 libffi6 libgmp10 libgnutls30 libhogweed4 libidn11 libidn2-0 libip4tc0 libip6tc0 libiptc0 libisc-export160 libksba8 liblocale-gettext-perl liblognorm5 libmnl0 libncurses5 libnetfilter-conntrack3 libnettle6 libnfnetlink0 libnpth0 libp11-kit0 libpsl5 libseccomp2 libsqlite3-0 libtasn1-6 libtext-charwidth-perl libtext-iconv-perl libtext-wrapi18n-perl libunistring0 libxtables12 pinentry-curses xxd
I: Checking component main on http://ftp.us.debian.org/debian...
I: Retrieving libacl1 2.2.52-3+b1
.....
I: Extracting zlib1g...

root@ziomario-desktop:~/Scrivania/qemu-x86# sudo chroot ./chroot-stretch-i386/ /debootstrap/debootstrap --second-stage

chroot: impossibile eseguire il comando "/debootstrap/debootstrap": No such file or directory