installation failure. downloaded iso file twice previous was 16.04. this time it was 16.04.01, but the similar problem during installation. very frustarting. Around 4 months ago i tried for around 15hrs. this atempt has already been to over 10 hrs. Tried to isntall from usb as wel as dvd. Tried mounting on usb with rufus and usb installer. This time i am tryoing to install on a USB drive only. Previous attampt failed on a blank internal ssd drive also. Very frustated.

[Iqminus50]

I am trying to install ubuntu on USB, that way therefore my laptop stays undisturbed with win8.1. I am not in a position to compromise since i have only one laptop.
downloaded iso file twice. previous was 16.04. this time it was 16.04.01, but the similar problem during installation.
very frustrating. Around 4 months ago i tried for around 15hrs using 16.04. this attempt has already been over 10 hrs. Tried to isntal from usb as well as dvd. Tried mounting on usb with rufus and usb installer. This time i am trying to install on a USB drive only. Previous attampt failed on a blank internal ssd drive also.
Failing all, please help me on how to create persistent use area on the usb stick.
Thanks

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubiquity 2.21.63.2
ProcVersionSignature: Ubuntu 4.4.0-31.50-generic 4.4.13
Uname: Linux 4.4.0-31-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CasperVersion: 1.376
Date: Wed Nov 23 23:21:08 2016
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/ubuntu.seed boot=casper quiet splash ---
LiveMediaBuild: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
ProcEnviron:
 LANGUAGE=en_AU.UTF-8
 PATH=(custom, no user)
 LANG=en_AU.UTF-8
 SHELL=/bin/bash
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

[dino99 (9d9)]

how to create persistent use area on the usb stick.