Remove 2.8 and dual boot 3.4 with Ubuntu

[phil66]

Code:

Ray-Kudu-Pro:~$ sudo os-prober
[sudo] password for ray:
/dev/sda3:Linux Lite 3.4 (16.04):Ubuntu:linux
Ray-Kudu-Pro:~$ cat /boot/grub/grub.cfg | grep "menuentry '"
menuentry 'Ubuntu' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-simple-5dbc3e00-edb2-4b6c-a2b8-bc024e5000e1' {
    menuentry 'Ubuntu, with Linux 4.4.0-83-generic' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-4.4.0-83-generic-advanced-5dbc3e00-edb2-4b6c-a2b8-bc024e5000e1' {
    menuentry 'Ubuntu, with Linux 4.4.0-83-generic (upstart)' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-4.4.0-83-generic-init-upstart-5dbc3e00-edb2-4b6c-a2b8-bc024e5000e1' {
    menuentry 'Ubuntu, with Linux 4.4.0-83-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-4.4.0-83-generic-recovery-5dbc3e00-edb2-4b6c-a2b8-bc024e5000e1' {
    menuentry 'Ubuntu, with Linux 4.4.0-81-generic' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-4.4.0-81-generic-advanced-5dbc3e00-edb2-4b6c-a2b8-bc024e5000e1' {
    menuentry 'Ubuntu, with Linux 4.4.0-81-generic (upstart)' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-4.4.0-81-generic-init-upstart-5dbc3e00-edb2-4b6c-a2b8-bc024e5000e1' {
    menuentry 'Ubuntu, with Linux 4.4.0-81-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-4.4.0-81-generic-recovery-5dbc3e00-edb2-4b6c-a2b8-bc024e5000e1' {
    menuentry 'Ubuntu, with Linux 4.4.0-79-generic' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-4.4.0-79-generic-advanced-5dbc3e00-edb2-4b6c-a2b8-bc024e5000e1' {
    menuentry 'Ubuntu, with Linux 4.4.0-79-generic (upstart)' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-4.4.0-79-generic-init-upstart-5dbc3e00-edb2-4b6c-a2b8-bc024e5000e1' {
    menuentry 'Ubuntu, with Linux 4.4.0-79-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-4.4.0-79-generic-recovery-5dbc3e00-edb2-4b6c-a2b8-bc024e5000e1' {
    menuentry 'Ubuntu, with Linux 4.4.0-78-generic' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-4.4.0-78-generic-advanced-5dbc3e00-edb2-4b6c-a2b8-bc024e5000e1' {
    menuentry 'Ubuntu, with Linux 4.4.0-78-generic (upstart)' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-4.4.0-78-generic-init-upstart-5dbc3e00-edb2-4b6c-a2b8-bc024e5000e1' {
    menuentry 'Ubuntu, with Linux 4.4.0-78-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-4.4.0-78-generic-recovery-5dbc3e00-edb2-4b6c-a2b8-bc024e5000e1' {
menuentry 'Memory test (memtest86+)' {
menuentry 'Memory test (memtest86+, serial console 115200)' {
menuentry 'Linux Lite 2.8 (14.04) (on /dev/sda3)' --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-simple-2c94c91e-503b-40c8-99a1-7fbf06d54273' {