05-20-2017, 05:22 PM
GParted screenshot showed that the LL you were booted into was on /dev/sda8, so that is the one whose grub boot loader is controlling boot of computer now. Therefore deleting the LL on sda6 is the correct move.
Both LL's, an NTFS partition and the Swap partition are all contained within the same "extended" partition -- /dev/sda4. As you found out, you can't manipulate one partition within it unless all are unmounted. You can't unmount a partition that is in use, so system won't allow you to unmount your root partition from the running system (/dev/sda8).
Instead, do as supergamer said and boot from your live LL install USB/DVD and run GParted from that. The Swap partition will get automatically mounted when you boot your live LL USB and that will need to be unmounted before you can delete the sda6 partition. In GParted, right-click the Swap partition and choose "swapoff" first; then you'll be able to delete sda6.
When you're done, reboot computer into the remaining LL install. (You'll still see a menu entry for the other LL, but it won't boot anything anymore.) Once booted, open a terminal and enter this command to update grub:
Next time you boot up the menu entry for second LL will be gone.
P.s. Doesn't matter anymore because GParted screenshot showed what I was looking for, but just for your information the first command above that I had you enter did not return proper info because you forgot to include the "-" in it. You typed lsblk af when it should have been lsblk -af.
Both LL's, an NTFS partition and the Swap partition are all contained within the same "extended" partition -- /dev/sda4. As you found out, you can't manipulate one partition within it unless all are unmounted. You can't unmount a partition that is in use, so system won't allow you to unmount your root partition from the running system (/dev/sda8).
Instead, do as supergamer said and boot from your live LL install USB/DVD and run GParted from that. The Swap partition will get automatically mounted when you boot your live LL USB and that will need to be unmounted before you can delete the sda6 partition. In GParted, right-click the Swap partition and choose "swapoff" first; then you'll be able to delete sda6.
When you're done, reboot computer into the remaining LL install. (You'll still see a menu entry for the other LL, but it won't boot anything anymore.) Once booted, open a terminal and enter this command to update grub:
Code:
sudo update-grubNext time you boot up the menu entry for second LL will be gone.
P.s. Doesn't matter anymore because GParted screenshot showed what I was looking for, but just for your information the first command above that I had you enter did not return proper info because you forgot to include the "-" in it. You typed lsblk af when it should have been lsblk -af.
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