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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) <cdimage@ubuntu.com>" [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? (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