marybuntu@marybuntu-NV59C:~$ mount
/dev/sda1 on / type ext4 (rw,errors=remount-ro)
proc on /proc type proc (rw,noexec,nosuid,nodev)
sysfs on /sys type sysfs (rw,noexec,nosuid,nodev)
none on /sys/fs/cgroup type tmpfs (rw)
none on /sys/fs/fuse/connections type fusectl (rw)
none on /sys/kernel/debug type debugfs (rw)
none on /sys/kernel/security type securityfs (rw)
udev on /dev type devtmpfs (rw,mode=0755)
devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620)
tmpfs on /run type tmpfs (rw,noexec,nosuid,size=10%,mode=0755)
none on /run/lock type tmpfs (rw,noexec,nosuid,nodev,size=5242880)
none on /run/shm type tmpfs (rw,nosuid,nodev)
none on /run/user type tmpfs (rw,noexec,nosuid,nodev,size=104857600,mode=0755)
none on /sys/fs/pstore type pstore (rw)
systemd on /sys/fs/cgroup/systemd type cgroup (rw,noexec,nosuid,nodev,none,name=systemd)
gvfsd-fuse on /run/user/1000/gvfs type fuse.gvfsd-fuse (rw,nosuid,nodev,user=marybuntu)
marybuntu@marybuntu-NV59C:~$ sudo mount /dev/sdb1 /mnt
[sudo] password for marybuntu: 
marybuntu@marybuntu-NV59C:~$ sudo cp -Rp /home /mnt
cp: error reading ‘/home/marybuntu/.config/google-chrome/Safe Browsing Download’: Input/output error
cp: failed to extend ‘/mnt/home/marybuntu/.config/google-chrome/Safe Browsing Download’: Input/output error
cp: error reading ‘/home/marybuntu/.config/google-chrome/Default/Local Extension Settings/cfhdojbkjhnklbpkdaibdccddilifddb/lost/003805.ldb’: Input/output error
cp: failed to extend ‘/mnt/home/marybuntu/.config/google-chrome/Default/Local Extension Settings/cfhdojbkjhnklbpkdaibdccddilifddb/lost/003805.ldb’: Input/output error
cp: error reading ‘/home/marybuntu/.config/google-chrome/Default/Local Extension Settings/cfhdojbkjhnklbpkdaibdccddilifddb/003829.ldb’: Input/output error
cp: failed to extend ‘/mnt/home/marybuntu/.config/google-chrome/Default/Local Extension Settings/cfhdojbkjhnklbpkdaibdccddilifddb/003829.ldb’: Input/output error