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Installing Ubuntu 21.04 Crashes while copying file to hard disk. The output message

The installer encountered an error copying files to the hard disk:

    [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.

I tried installing in two laptops one with 512 GB SSD and other is 1 TB. Both are same ASUS Vivobook 15. Installation occurs smoothly if installed in VMware. Tried two methods of partioning along with windows and also other with root partition around a 100 GB and bootloader in EFI system partition of Windows boot manager. Burned the iso image with balena and tried 2 usb sticks. I have the log files. Is there a workaround available or should I file a bug?

Edit-01:

I did verify the downloaded iso https://ubuntu.com/tutorials/how-to-verify-ubuntu#1-overview by this tutorial provided by @guiverc but in step 5 when I run

gpg --keyid-format long --verify SHA256SUMS.gpg SHA256SUMS

the output is

gpg: Signature made Fri 23 Apr 2021 01:04:38 AM IST
gpg:                using RSA key 843938DF228D22F7B3742BC0D94AA3F0EFE21092
gpg: BAD signature from "Ubuntu CD Image Automatic Signing Key (2012) <[email protected]>" [unknown]

but in last step when I run

sha256sum -c SHA256SUMS 2>&1 | grep OK

the output is

ubuntu-21.04-desktop-amd64.iso: OK

I am new to this crypto verify thing! Is my iso corrupted?

  • 1
    Did you verify your ISO? https://tutorials.ubuntu.com/tutorial/tutorial-how-to-verify-ubuntu#0 as either you have a faulty ISO, or your write to media was flawed. The issue is bad media (CD refers to your installation media; be it CD/DVD/HDD/SSD/thumb-drive or anything used)... FYI: *I find the write to the installation media to be mostly at faulty; about 5-8% failure rate on writes of ISO in my experience*. – guiverc Jul 23 '21 at 11:44
  • Does this answer your question? [Is verifying ISOs downloaded from the official website worthwhile?](https://askubuntu.com/questions/993407/is-verifying-isos-downloaded-from-the-official-website-worthwhile) (my upvoted answer is the ISO validation one, but there is also another answer there on media checks and how you confirm my belief; ie. squashfs errors) – guiverc Jul 23 '21 at 11:45
  • It tells you in the error on why it was unable to install. You could try to reinstall the OS to the USB stick or get a new HDD. – Jon Jul 23 '21 at 12:27
  • @guiverc As per the tutorial you provided, I checked, but it showed bad signature when running gpg --keyid-format long --verify SHA256SUMS.gpg SHA256SUMS (in step 5) but in last step sha256sum -c SHA256SUMS 2>&1 | grep OK it outputs as per tutorial. I am new to this crypto verify thing! Is my iso corrupted? Regarding Media Installation it is solid, I installed Fedora, and RHEL. No issues with HDD or Media writer. –  Jul 23 '21 at 12:52
  • It's hard to read detail in comments so please add to your question (greater formatting options exist in questions/answers. You said you used in VM; if the VM was identical hardware with identical options run, plus you scanned logs for *squashfs* errors that detail is incomplete (like writer had no errors; if writing to usb-thumb-drives no error is ~always given as no validation hardware exists on thumb-drives; they're consumable/cheap/made-to-cost). Validation is a separate step performed whilst 21.04 runs & visible in logs. I believe your write to media is where it failed. – guiverc Jul 23 '21 at 22:22
  • @guiverc I edited and added details to my question, In my VM I used BIOS as my firmware but my Laptop uses UEFI! I will try to reinstall with UEFI in VM again.And regarding logs, I dont know where to check errors, There are around 17 log files in /var/log. It will be nice if you provide a way to check and Regarding media( My SSD and HDD) I doubt it to be faulty, since they are less than a year old and other OS installation went smooth. –  Jul 24 '21 at 03:19
  • The CD mention implies the error is with your installation media (be it CD/DVD/HDD/SSD/thumb-drive/flash-card/magnetic-tape or whatever you're using - CD is used for historical reasons for any installation media regardless of what device its written to) and includes logical/checksum errors and not physical issues. I provided a link with details on checking; see second post & the command I mention on how I check for *squashfs* errors in that link, or if you need another see https://askubuntu.com/questions/1311183/do-i-need-to-check-the-integrity-of-a-ubuntu-install – guiverc Jul 24 '21 at 03:33

0 Answers0