Live Installation to External Device
With a live installation of an operating system, it can be run directly from an external device:
- bypassing the existing, internal operating system on one's computer
- without altering the configuration of the existing, internal operating system on one's computer (unless one deliberately chooses to do so in order to fix a broken system configuration)
With a live installation of an operating system, it can be run directly from an external device such as:
- SD flash memory card
- USB flash memory drive
- solid-state drive (SSD)
- hard disk drive (HDD)
- optical disc drive (see LiveDVD)
1. How to create a live installation to external device
- acquire the disk image file (with file extension .img or .iso) of the desired operating system, such as a recent Puppy Linux release (read Appendix 2)
- then, write the disk image file (with file extension .img or .iso) to an external device
2a. How to write (burn) a disk image file to external device (except optical disc drive)
- From within GNU/Linux (select one of the following)
- dd command
- ensure the target device is disconnected, or remove all removable USB devices, from the computer
- next, list all known disk devices connected to the computer, via the command-line interface:
lsblk -al
- next, connect the target device to the computer via an USB port
- next, determine the correct device name (sdX) of the target device by invoking the lsblk command again, and comparing both outputs:
lsblk -al
- then, write (burn) the disk image file (with file extension .img or .iso) to external device, via the command-line interface
- WARNING the dd command will overwrite all existing data on the target device X, where X represents the device letter for your target device - USE ENTIRELY AT YOUR OWN RISK:
time sudo dd bs=4M conv=notrunc,fdatasync oflag=direct status=progress if=<DISK IMAGE FILE> of=/dev/sdX
- From within Android:
- ensure an external device is connected to the smartphone/tablet, via the USB port
- then, use the following free software program:
- From within Microsoft Windows:
- ensure an external device is connected to the computer, usually via a USB port
- then, use either one of the following free software programs:
- Rufus (the latest version of Rufus requires Windows 8 or later; last supported version for Windows 7 is version 3.22)
2b. How to write (burn) a disk image file to external device (optical disc drive only)
- go to LiveDVD
3. How to run GNU/Linux from the external device
- ensure the external device is connected to the computer, usually via a USB port
- next, ensure that the U.E.F.I./B.I.O.S. firmware (low-level software that starts just prior to the operating system doing so) settings is configured to follow the desired boot sequence (read Appendix 3)
- next, ensure that the computer is put in a power-off state
- next, power-on the computer
Appendix
https://easyos.org/install/how-to-install-easyos-on-a-new-ssd.htmlhttps://www.system-rescue.org/Installing-SystemRescue-on-a-USB-memory-stick/
https://www.happyassassin.net/posts/2014/01/25/uefi-boot-how-does-that-actually-work-then/
https://uefi.org/faq
