Current disk structure only have dev/sd1 with full disk space how can I resize it to get some unallocated space for installing another os?
1 Answer
You can not resize partition in use, so since you boot from it - you need another bootable media.
- Make backup of important documents/files, resize operation may fail and you'll loose everything
- Charge to 100% if you have battery
- Make a bootable USB with Ubuntu. One of possible ways
- Boot from it, choose try without installing in boot menu
- Run gparted and change size of existing partition, decide how much you need for new os. This operation takes time, and must not be canceled/braked
Install new OS, then boot into Ubuntu and run
update-grub
. New os will appear in grub menu after thatIf you have booting problems, boot USB Ubuntu, install and run Boot-Repair. Click "Recommended Repair"