Executing a script with chroot; permission denied

I want a script to execute a few commands in chroot. So, like this answer proposed scripting chroot, how to? I added the following part in my script, creating a .sh file with the commands I want it to execute.

cat <<EOF >/mnt/grubscript.sh
#!/bin/bash
cp /proc/mounts /etc/mtab
grub-install /dev/vdb
grub-install --recheck /dev/vdb
EOF
chroot /mnt ./grubscript.sh

This generates the following error:

chroot: failed to run command ‘./script.sh’: Permission denied

I tried chmod 777 and chmod +x but that doesn't work. The file has been created right, and cannot be executed manually from chroot as well.

1 Answer

The inquirer solved it by changing

chroot /mnt ./grubscript.sh

to:

chroot /mnt /bin/bash grubscript.sh