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Error Description: [Errno 5] Input/output error

This is often due to a faulty CD/DVD disk or drive, or a faulty hard disk. It may help to clean the CD/DVD, to burn the CD/DVD at a lower speed, to clean the CD/DVD drive lens (cleaning kits are often available from electronics suppliers), to check whether the hard disk is old and in need of replacement, or to move the system to a cooler environment.

Similar problem in history: https://www.reddit.com/r/linuxmint/comments/7qdc2q/errno_5_inputoutput_error_during_my_dual_boot/

My current dumb solution is writing a bootable dvd, bypassing rufus / unetbootin. Can I have step-by-step working solution for creating bootable ubuntu 20.04 pendrive (in windows environment?)

https://ubuntu.com/tutorials/create-a-usb-stick-on-windows#10-installation-complete - this is not working. (it is bootable in live session though) Rufus works with Linux Lite 5.2 so far. Unetbootin works with previous Linux distros 14.10 and before.

Thanks in advance!

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    Are you saying that the Ubuntu Tutorial that you linked to fails to result in a bootable USB? Or that it results in a bootable USB that runs the "Try Ubuntu" environment properly but fails to install Ubuntu? Or something else? Most commonly, such problems are caused by an intermittent error in the USB creation application (commonly called a "bad burn"), or occasionally by a hurried user unplugging the USB before the write is complete. – user535733 Nov 26 '20 at 20:35
  • ubuntu.com/tutorials/… Why not follow the official tutorial. It's been tested with each release of Ubuntu, but as there are many ISO types, it's only tested on Ubuntu ISOs (including all flavors of Ubuntu, but not non-Ubuntu). Linux lite is not Ubuntu, nor flavor of Ubuntu and is off-topic here. – guiverc Nov 26 '20 at 21:02
  • If you want a method that will write all ISOs, you'll have to ask elsewhere, as the Ubuntu method works for all official Ubuntu ISOs as all Ubuntu and official flavor ISOs are the same type (of ISO). If it fails with a Ubuntu ISO, it was properly done, data sync occurred, then file a bug - help.ubuntu.com/community/ReportingBugs but only on Ubuntu ISOs – guiverc Nov 26 '20 at 21:07
  • @user535733 Can use "try ubuntu" properly, but fails to install ubuntu. The very same pendrive is working for (can install) Linux Lite 5.2. – Kah Chiat Saw Nov 27 '20 at 2:29
  • @guiverc I wish to have someone here trying this method out and telling me it is working for ubuntu 20.04. I can use "try ubuntu" but not "install ubuntu". Using DVD to install is fine though. – Kah Chiat Saw Nov 27 '20 at 2:31

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