Linux setup from usb

Ubuntu Documentation

Outline

The general procedure to install Ubuntu (or Ubuntu flavour, Kubuntu, Lubuntu, Xubuntu, . ) from a USB flash drive is:

Get the correct Ubuntu installation file, ‘the iso file’, via this link or Ubuntu flavour via this link. Download the iso file into your running computer (for example into the directory Downloads in the internal drive, not into the USB flash drive that you want to make into a USB boot drive).

Check with md5sum (or another checksum tool) that the download was good.

Put Ubuntu onto your USB flash drive alias ‘stick’ alias ‘pendrive’ alias ‘thumb’. Tools for this purpose are described in this help page.

Configure your computer to boot from USB flash drive and boot from it.

Try Ubuntu (Kubuntu, Lubuntu, Xubuntu, . ) before installing it.

Install Ubuntu to your internal drive (hard disk drive or solid state drive or external drive).

See also: Installation/FromUSBStickQuick for beginners starting from Windows.

Introduction

Ubuntu can be installed from a USB flash drive. This may be necessary for most new portable computers without DVD drives and is handy for others because a USB flash drive is so convenient. Also, you can configure Ubuntu on the USB flash drive to save changes you make, unlike a read-only CD/DVD disk.

Booting from a USB flash drive created with usb-creator alias Startup Disk Creator and mkusb will behave just as if you had booted from the install CD. It will show the language selection and then the install menu, from which you can install Ubuntu onto the computer’s hard drive or launch the LiveCD environment. Other utilities, e.g. UNetbootin, may create slightly different boot drives or if on UEFI might not work at all with Debian iso files due to a bug

Note: This article uses the term «USB flash drive» alongside USB stick, USB drive, USB device, USB pendrive and thumb drive.

Prerequisites

To create a USB installation device, you will need:

a 4 GB USB flash device/drive/stick. If the iso file is smaller than 2 GB, it is possible to use a 2 GB USB device, at least with some of the methods. Files on this USB device will be erased, so backup the files you want to keep before making the device bootable. Some of the tools require that this USB device is properly formatted and mounted while other tools will overwrite whatever is on the target device. Please follow the instructions for each tool.

an Ubuntu flavour ISO file downloaded from an official web page, ubuntu.com/download or http://releases.ubuntu.com, stored in your running computer (for example in the directory Downloads in the internal drive, not in the USB flash drive that you want to make into a USB boot drive).

Check with md5sum (or another checksum tool) that the download was good. In Linux there is the tool ‘md5sum’. In Windows you can do it with Rufus: click on the circle with a tick mark (more about Rufus here.)

Dummy headlines

After a major remake of this help page the following headlines are kept here because they may be linked to from other web sites. Several other headlines further down in the page are also kept for this reason.

Notes about speed

Notes about size

Notes about bootability

The flash hardware

There is a detailed description at the sub-page /pre

Creating a bootable Ubuntu USB flash drive from Windows

There are various methods available for Windows to create a bootable Ubuntu USB flash drive.

NEVER try to use one of your hard disk drives or partitions in this process unless you really know what you are doing, as data will get erased.

Rufus

Rufus is the tool in Windows that is recommended officially by Ubuntu. A tutorial is available from here.

balenaEtcher

Pendrivelinux’s Universal USB Installer

UNetbootin

Win32 Disk Imager

There is a detailed description at /fromWindows including Rufus, balena Etcher, Universal USB Installer, Unetbootin and Win32 Disk Imager.

Creating a bootable Ubuntu USB flash drive from Ubuntu

Install and run Startup Disk Creator alias usb-creator

The Ubuntu Startup Disk Creator is dedicated to creating USB boot drives for Ubuntu and Ubuntu family flavours (Kubuntu, Lubuntu . Xubuntu).

Use another tool (e.g. ‘UNetbootin’ or ‘mkusb’), if you want to create a USB boot drive with another Linux distro (alias Linux operating system).

You can find usb-creator-gtk by typing «Startup Disk Creator» (Ubuntu Desktop) or usb-creator-kde in K-Menu—>Applications—>System—>Startup Disk Creator (Kubuntu). If it is not there, then you can install it using the Ubuntu Software Center.

• Insert and mount the USB drive. Inserting the USB drive should auto-mount it.
• Start the Startup Disk Creator
• In the top pane of the Startup Disk Creator, pick the .iso file that you downloaded.
• If the .iso file isn’t listed, click «Other» to locate and select the .iso file that you downloaded.
• In the bottom pane of the Startup Disk Creator, pick the target device, the USB flash drive. If more than one choice, please check carefully, until you are sure that you will be writing to the correct device.
• After checking that you are pointing to the correct target device, the USB flash drive, you can start the action.

You must enter a password because this is a risky operation. Use the password of the current user ID (the same as for login and running tasks with 'sudo'. Password is not required when installing from a ‘live’ system (booted from a DVD disk or another USB flash drive).

The Startup Disk Creator clones the iso file, which means that you need neither erase nor format the target drive. It will be completely overwritten anyway by the cloning process. The Startup Disk Creator looks like this in Ubuntu 18.04 LTS:

Notes

NEVER try to use one of your hard disk drives or SSDs or partitions in this process unless you really know what you are doing, as data will get erased.

There are bugs that affect the Ubuntu Startup Disk Creator, when you run it in old Ubuntu versions in BIOS mode and try to create USB boot drives with other versions. In the Ubuntu Startup Disk Creator version 0.3.2 in Ubuntu 16.04 LTS, these bugs are no longer a problem, so you can install any version of the Ubuntu flavours from 16.04 LTS and newer versions.

UNetbootin

Download UNetbootin

UNetbootin works in and with most Linux distros.

It is an extracting tool (not a cloning tool).

It can make a persistence file up to 4GB in size to save data and defaults.

mkusb — dd image of iso file to USB device safely

If you want to clone from a general image file to a drive, you can use mkusb. It lets you clone to any drive that is not busy, also an internal drive, and there are very obvious warnings to prevent mistakes.

mkusb can also

• run in Debian and many linux distros that are similar to Ubuntu and Debian,
• clone from iso files of most Linux distros to create USB boot drives,
• create persistent live drives of the Ubuntu family and Debian, using all available drive space for persistence and/or data storage,
• restore a USB boot drive to a standard storage device.

There is a detailed description at /fromUbuntu including the Startup Disk Creator, UNetbootin and mkusb.

Creating a bootable Ubuntu USB flash drive from Mac OSX

There is a good wiki page about booting with UEFI, and a good tutorial thread, UEFI Installing — Tips.

Test if running in UEFI mode

You may want to test if your Ubuntu flavour is running in [U]EFI mode. An installed system and a live system too is using the directory /sys/firmware/efi, so you can run the following command line,

The following command line is more robust and also easier to understand, so you may prefer it (if you copy & paste and are not bothered by typing a long command line),

Источник

Ubuntu Documentation

Booting the Computer from USB

Remove all unneeded USB items, but keep the network cable attached.

Boot menu

Instead of editing BIOS settings, you can choose a boot device from the boot menu. Press the function key to enter the boot menu when your computer is booting. Typically, the boot screen displays which key you need to press. It maybe one of F12, F10, F9.

Hotkey

Insert the bootable USB flash drive that you just created in your target computer and restart it. Most newer computers can boot from a USB flash drive. If your computer does not automatically do so, you might need to edit the BIOS settings.

Restart your computer, and watch for a message telling you which key, hotkey to press to enter the BIOS setup.

• It will usually be one of F1, F2, F9, F10, DEL, Enter or ESC.
• The hotkey should be described in the user manual provided by the manufacturer of the computer (a printed or electronic document).

You can also search your hardware on boot-keys.org.

Press this hotkey continuously or tap repeatedly (different between computers) while your computer is booting to edit your BIOS settings. (On HP Mini Netbooks, the correct key is usually F9.)

Edit the BIOS settings

Select ‘hard disk/USB-HDD0’

Note: with some motherboards you have to select ‘hard disk/USB-HDD0’ to choose the USB flash disk. It may work like this because the system sees the USB drive ‘a mass storage device’ as a hard disk drive, and it should be at the top of the boot order list.

So you need to edit the Boot Order. Depending on your computer, and how your USB key was formatted, you should see an entry for «removable drive» or «USB media». Move this to the top of the list to make the computer attempt to boot from the USB device before booting from the hard disk.

Normally you would enter into the BIOS/UEFI menus directly at boot as described above, but if you are running Windows, you can also get there according to this link.

Chainloading

The 40_custom method

In the particular case, that you have linux and grub installed there is also the 40_custom method. Some pendrives boot from grub even if they won’t boot from the computer’s own BIOS USB boot menu entry. See the following link for a background about grub Scripts: /etc/grub.d/

Add the following text to the file 40_custom (notice that it is important to keep the first lines, that come with the file)

and run the command

Then you will get a grub menu option to boot from a second drive (hd1), which could be a USB pendrive. If another drive is hd1, you can edit the line to (hd2) etc.

If there is no grub menu, press the left shift key during boot, and it should appear.

This chainloading method does not work in UEFI mode.

The Chainloader

This method is developed into a method to boot the computer with one USB drive that is a good booter, and chainload to another USB drive, where the operating system resides. See this link Howto help USB boot drives

PLoP Boot Manager

• For old computers that cannot boot from USB. Some computers can see the USB flash drive and may have the option to boot from USB but cannot actually do so. All hope is not lost.

Requirements

• Windows running on the computer
• USB flash drive, ready to boot (shown below)

PLoP Boot Manager — Your alternative USB boot method, https://www.plop.at/en/bootmanager/index.html

Just follow the instructions on the PLop website.

A detailed guide to make Plop Boot Manager work from GRUB by installing it on hard drive is available here — http://mgw.dumatics.com/how-to-boot-from-usb-when-bios-does-not-have-the-option/

Flow chart for trouble-shooting

There is a flow chart for trouble-shooting and corresponding lists of possible causes of problems to boot from USB at the following link,

Installation/FromUSBStick/bootUSB (последним исправлял пользователь nio-wiklund 2020-07-29 13:21:38)

The material on this wiki is available under a free license, see Copyright / License for details
You can contribute to this wiki, see Wiki Guide for details

Источник

Linux setup from usb

With a bootable Ubuntu USB stick, you can:

• Install or upgrade Ubuntu
• Test out the Ubuntu desktop experience without touching your PC configuration
• Boot into Ubuntu on a borrowed machine or from an internet cafe
• Use tools installed by default on the USB stick to repair or fix a broken configuration

Creating a bootable Ubuntu USB stick from Microsoft Windows is very simple and we’re going to cover the process in the next few steps.

Alternatively, we also have tutorials to help you create a bootable USB stick from both Ubuntu and Apple macOS.

2. Requirements

• A 4GB or larger USB stick/flash drive
• Microsoft Windows XP or later
• Rufus, a free and open source USB stick writing tool
• An Ubuntu ISO file. See Get Ubuntu for download links

Take note of where your browser saves downloads: this is normally a directory called ‘Downloads’ on your Windows PC. Don’t download the ISO image directly to the USB stick! If using Windows XP or Vista, download version 2.18 of Rufus.

3. USB selection

Perform the following to configure your USB device in Rufus:

1. Launch Rufus
2. Insert your USB stick
3. Rufus will update to set the device within the Device field
4. If the Device selected is incorrect (perhaps you have multiple USB storage devices), select the correct one from the device field’s drop-down menu

You can avoid the hassle of selecting from a list of USB devices by ensuring no other devices are connected.

4. Boot selection and Partition scheme

Now choose the Boot selection. Choices will be Non bootable and FreeDOS. Since you are creating a bootable Ubuntu device select FreeDOS.

The default selections for Partition scheme (MBR) and Target system (BIOS (or UEFI-CSM)) are appropriate (and are the only options available).

5. Select the Ubuntu ISO file

To select the Ubuntu ISO file you downloaded previously, click the SELECT to the right of “Boot selection”. If this is the only ISO file present in the Downloads folder you will only see one file listed.

Select the appropriate ISO file and click on Open.

6. Write the ISO

The Volume label will be updated to reflect the ISO selected.

Leave all other parameters with their default values and click START to initiate the write process.

7. Additional downloads

You may be alerted that Rufus requires additional files to complete writing the ISO. If this dialog box appears, select Yes to continue.

8. Write warnings

You will then be alerted that Rufus has detected that the Ubuntu ISO is an ISOHybrid image. This means the same image file can be used as the source for both a DVD and a USB stick without requiring conversion.

Keep Write in ISO Image mode selected and click on OK to continue.

Rufus will also warn you that all data on your selected USB device is about to be destroyed. This is a good moment to double check you’ve selected the correct device before clicking OK when you’re confident you have.

If your USB stick contains multiple partitions Rufus will warn you in a separate pane that these will also be destroyed.

9. Writing the ISO

The ISO will now be written to your USB stick, and the progress bar in Rufus will give you some indication of where you are in the process. With a reasonably modern machine, this should take around 10 minutes. Total elapsed time is shown in the lower right corner of the Rufus window.

10. Installation complete

When Rufus has finished writing the USB device, the Status bar will be green filled and the word READY will appear in the center. Select CLOSE to complete the write process.

Congratulations! You now have Ubuntu on a USB stick, bootable and ready to go.

If you want to install Ubuntu, take a look at our install Ubuntu desktop tutorial.

Источник