# Ubuntu – Resize Windows partition from USB boot disk

dual-bootpartitioningsystem-installation

When I try to install Ubuntu from a USB Boot pen drive, there is an option to manually manage the partitions. Right now my HDD has one Windows 10 partition that used 100% of the device's storage (even though it only uses 5% of its capacity).

If I resize the Windows partition from the USB Boot live install, could I damage the Windows 10 partition?

Then reboot from a live USB or DVD drive and use gparted to create the partitions you want for Ubuntu (use the unallocated drive space).