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I just got a new Acer Aspire 5 A515-56 laptop. I'm trying to install Ubuntu on it, however while installing, I keep getting an error message that says [Errno 5] Input/output error.

Error Message

After reading through similar questions, here are some things I have tried.

  • I tried installing Ubuntu 22.04 and Ubuntu 20.04 (I downloaded both iso files from the official website).
  • I tried using a different bootable drives (note that both were microSD).
  • I tried installing it the "normal way" as well as the "safe graphics" way (as my laptop does have Intel Iris Xe Graphics).
  • I tried every combination of "minimal installation"/"normal installation" and "update while installing"/"install third party software"
  • I tried using Etcher, Rufus, and Startup Disk Creator to flash the USB drives.
  • In the BIOS, I enabled F12 boot and disabled Secure Boot.
  • I have tried using different USB ports.
  • I tried disabling VMD in the BIOS.

So far everything has led to errno 5.

UPDATE: Here is the output of verifying the ISO:

thomas@computer:~$ gpg --keyid-format long --verify ~/Downloads/SHA256SUMS.gpg ~/Downloads/SHA256SUMS.txt
gpg: Signature made Thu 11 Aug 2022 07:07:33 AM EDT
gpg:                using RSA key 843938DF228D22F7B3742BC0D94AA3F0EFE21092
gpg: Good signature from "Ubuntu CD Image Automatic Signing Key (2012) <[email protected]>" [unknown]
gpg: WARNING: This key is not certified with a trusted signature!
gpg:          There is no indication that the signature belongs to the owner.
Primary key fingerprint: 8439 38DF 228D 22F7 B374  2BC0 D94A A3F0 EFE2 1092

And

thomas@computer:~$ sha256sum -c SHA256SUMS.txt 2>&1 | grep OK

ubuntu-22.04.1-desktop-amd64.iso: OK
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  • The error & message (CD/DVD is a huge clue; as that your installation media) highlights issues with your ISO, be it the ISO so did you validate it as per documentation for you unstated ISO; you didn't specify if desktop/server/etc) OR in my experience the write of ISO to media; did it write correctly & verification of the write complete successfully (refer to my "Media Checks" answer in that duplicate; or other question found in comments). Do note the software you mention can re-write (non-clone write) an ISO so it differs to the original which can cause this error.
    – guiverc
    Commented Feb 20, 2023 at 5:10
  • A lack of RAM on your device can also cause this issue (usually you experience this on VMs though; as it's less than 1GB of RAM which most devices have), but checking logs on the system (what I use in the duplicate I tagged) can provide more clues. ps: I suggest writing the ISO using a pure-clone option, and not any of the re-format ISO options available on some software.
    – guiverc
    Commented Feb 20, 2023 at 5:11
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    I just tried again without using 'Rufus' or 'Etcher' (I followed the tutorial found here: ubuntu.com/tutorials/create-a-usb-stick-on-ubuntu#1-overview) but still got Errno 5.
    – Thomas
    Commented Feb 20, 2023 at 9:16
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    Possible duplicate of "errno 5 - input/output error" when trying to install Ubuntu
    – karel
    Commented Feb 20, 2023 at 10:07
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    @muru I just added the output of 'sha256sum -c SHA256SUMS.txt 2>&1 | grep OK'. Please let me know if that's what you meant. Thanks!
    – Thomas
    Commented Feb 20, 2023 at 18:36

1 Answer 1

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Turns out my micro SD cards (or perhaps the micro SD to USB converter) are faulty. The solution was to use a different USB drive. When using a new drive, the installation went flawlessly. Though this answer may not be all that instructive, I hope the troubleshooting I described and discussion in the comments help future users. Many thanks to @guiverc for the guidance!

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