Windows installs Ubuntu desktop operating system to mobile hard drive and error resolution

Tools used: U disk one (usb3.0, you understand), mobile hard disk (I This is the notebook taken out of the mechanical hard drive mounted on the box)

First step: Download the Ubuntu system ISO image file

Download the Ubuntu system ISO image file, as I am a novice, download the desktop version is OK. : Https://www.ubuntu.com/download

Find the desktop version, download it is almost this thing: Ubuntu-16.04.3-desktop-amd64.iso

Step two: Make boot disk with u disk

Download the "USB Installer" tool and make it. : Http://www.pendrivelinux.com/downloads/Universal-USB-Installer/Universal-USB-Installer.exe

After downloading, do not install, run directly. In the STEP1 below this interface choose your image package version, STEP2 choose your downloaded ISO file, STEP3 choose your USB stick, others remain the default. Click the Create button and wait for it to finish.

　　

Step three: Set PC startup preferences to USB drive boot.

Each computer is different, there is not much to say. I am Lenovo notebook, set up the USB stick boot can not enter, you need to press F12 when starting to manually select the startup item, select USB boot or the last one.

Fourth step: Go to Ubuntu Preview desktop and install.

After setting up the USB flash drive or selecting the startup item, you can go to Ubuntu Preview Desktop. Then click on the desktop Installer installation, because to install to the mobile hard disk, so you can not select "with your Windows exist", "Clean and reinstall" (almost this name), to select "Other options (custom partition Table)", and then select the mobile hard disk, the lower left corner of the "+" sign , create a new partition.

1. First establish the primary partition: Fill in the size of the XXXMB (the size of their own decision, because this partition is all your files to use the space so as to set larger), "New Partition Type" SELECT "Primary Partition", "for" option to choose the default EXT4 log file system, "mount point" Select the first, that is, "/".
2. Then set up the swap partition, in the "for" option to swap space, generally less than 2048.
3. In addition to the/root directory and the swap partition, there are other partitions, see the table below (in addition, the format I use EXT3,EXT4 is Ext3 's improved version):

Catalogue	Recommended Size	format	Description
/	10g-20g	Ext4	root directory
Swap	<2048m	Swap	Swap space
/boot	Around 200M	Ext4	The Linux kernel and the files required for the boot system program, such as the Vmlinuz initrd.img files, are located in this directory. In general, the GRUB or LILO system Boot Manager is also located in this directory; Start crashing into the file storage location, such as Kernels,initrd,grub
/tmp	Around 5G	Ext4	System temporary files, general system restarts will not be saved. (need to establish server?) ）
/home	Try to be bigger.	Ext4	User working directory, personal profile, such as personal environment variables; All accounts are assigned a working directory.

4. At this point, the following "Installation Boot boot device" selected as your mobile hard disk (some friends did not change the boot device caused by unplug the mobile hard drive will not be able to boot) Click "Install Now", no problem, step by step can be completed installation.

Error Resolution:

• During the installation, the "Unable to unload the Isodevice partition" error occurs, or the "Scanning system disk" is stuck at the end.

Before installing, uninstall the already mounted ISO file, use the shortcut key: Ctrl+alt+t bring up the command line, enter the command: sudo umount-l/isodevice Enter, note the space and the letter "L" is not "I".

• Partition prompt: "The partition assigned to//DEV/SDB starts at XXXX Byte, using the disk's minimum alignment, which can cause very poor performance ..."

Using the Partition Assistant tool such as Diskgenius, back to the original system to repartition and format the hard disk, that is, 4k alignment.

Windows installs Ubuntu desktop operating system to mobile hard drive and error resolution