Having done all the steps to get Ubuntu in USB. Starting from USB, I have Ubuntu running properly BUT I cannot open Windows files because
Windows is hibernated, refused to mount. Failed to mount '/dev/sda4': Operation not permitted
The NTFS partition is in an unsafe state. Please resume and shutdown Windows fully (no hibernation or fast restarting), or mount the volume read-only with the 'ro' mount option.
You have two options:
1- Reboot your Ubuntu and open windows, then turn off fast boot. Turn off windows 10 fast boot.
2- Reboot your Ubuntu and open windows, then restart your windows and open Ubuntu. You will find that problem is solved because restarting close all partitions.
Note : If you choose option 2 you will need to do it every time you want to use Ubuntu.
Disable hibernation and Fast startup. Boot the Windows operating system.
Open command prompt as administrator and execute : powercfg /h off.
Open Windows Control Panel -> Power Settings and uncheck Fast startup.
In case it is not visible, enable show hidden settings.
Shutdown the machine completely, do NOT reboot.
Now you are able to access the Windows partitions.
Windows 10 does not seem to have the option mentioned in other answers (at least I could not find it). Simply Hold the shift key when you tell Windows to shut down. works like a charm!
The best solutions: 1. Ubuntu cannot open Windows files: Fully shut down Windows10 holding down the Shift key and clicking Shut-down option. 2. Ubuntu Start-up too long (5' to 10'): Before closing Ubuntu (for next time you will open it) open Terminal and type the command:
dmesg > /tmp/dmesg.txt; gedit /tmp/dmesg.txt
This works only once so, my suggestion, is to do it every time that you close Ubuntu.
