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Thread: Operation System not found - Ubuntu 24.04.1 LTS fresh Install on Inspiron 14R N4110

  1. #11
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    Ubuntu 24.04 Noble Numbat

    Re: Operation System not found - Ubuntu 24.04.1 LTS fresh Install on Inspiron 14R N41

    lubuntu.net is unofficial and completely out of date - please ignore it.

    This is the one you want https://lubuntu.me/

    The iso with amd in the title signifies 64-bit architecture, suitable for both Intel and AMD.
    (I think AMD were the first out of the starting blocks and licensed it to Intel - something like that)

  2. #12
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    Re: Operation System not found - Ubuntu 24.04.1 LTS fresh Install on Inspiron 14R N41

    Quote Originally Posted by tea for one View Post
    That's a pity, no sign of UEFI in your images.

    One last double check
    Can you attach your USB, power on and press F2 and see if you have more than one entry under USB or Removable Drive?
    With USB attached, this is what Boot (F2) screen looks like
    Last edited by lang22; November 26th, 2024 at 07:48 PM.

  3. #13
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    Ubuntu 24.04 Noble Numbat

    Re: Operation System not found - Ubuntu 24.04.1 LTS fresh Install on Inspiron 14R N41

    Your image in post 12 is too small to decipher.
    Please use "Go Advanced" then "Attachments"

    Ah, I can see it now - Still no sign of UEFI.
    Perhaps, boot-repair misreported, we have no way to double check other than what you show us.

    Looks like you'll have to install in Legacy mode.
    If so, change your partition table to msdos before starting the installer.
    Attached Images Attached Images
    Last edited by tea for one; November 26th, 2024 at 07:52 PM.

  4. #14
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    Re: Operation System not found - Ubuntu 24.04.1 LTS fresh Install on Inspiron 14R N41

    Quote Originally Posted by tea for one View Post
    ....
    Looks like you'll have to install in Legacy mode.
    If so, change your partition table to msdos before starting the installer.
    Right now I have 3 partitions in sda: sda1 = GRUB, sda2 = data?, sda3 = /boot
    sda2 and sda3 are ext4 file system.

    which partition should I change to msdos? sda3? sda2? or both?
    Thank you.

  5. #15
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    Re: Operation System not found - Ubuntu 24.04.1 LTS fresh Install on Inspiron 14R N41

    which partition should I change to msdos? sda3? sda2? or both?
    You don't change partitions it is the physical drive and usually this deletes the OS installed as well as all data so you need backups. What was the reason for trying to create a separate boot partition? You have a Legacy install on a GPT drive and you have the BIOS_boot partition (sda1) needed for the Grub core.img file (which is there) as well as Grub code in the MBR so it should boot. Was this sysetm booting successfully for some time before you created the separate boot partition and if so, why create it? If you had problems booting you would likely have been better of posting the problem because generally, there is no need for a separate boot partition.

    You could try reinstalling the same release version of Ubuntu to sda2 and skip the /boot partition. If you select to NOT FORMAT that partition (sda2), it should reinstall and save data but I would do backups just in case. There might be a way to convert to GPT without data loss so maybe wait for someone to post or do an online search.

  6. #16
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    Re: Operation System not found - Ubuntu 24.04.1 LTS fresh Install on Inspiron 14R N41

    Quote Originally Posted by lang22 View Post
    which partition should I change to msdos? sda3? sda2? or both?
    msdos or gpt are partition tables for the whole disk.
    For many years, Legacy (mbr) installations reliably used msdo partition tables, hence the reason for my suggestion.
    Also, your PC has a certain vintage (2011) and may be better suited to earlier traditional formats.

  7. #17
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    Re: Operation System not found - Ubuntu 24.04.1 LTS fresh Install on Inspiron 14R N41

    You may not have to change to MBR(msdos).
    Only a few systems seem to complain.

    I have used gpt with my 2006 BIOS only desktop since about 2010. Learned grub needed the bios_grub partition of 1 or 2MB unformatted with bios_grub if using gparted. Or code ef02 if using gdisk.
    Converted old 2006 laptop to gpt and it did not complain.

    About the only place MBR still required is for BIOS installs of Windows. And Microsoft has required vendors to install Windows in UEFI boot mode with gpt partitioning since 2012.

    Systems prior to 2012 usually are BIOS/MBR, but a few before then were UEFI. Windows 7 could be installed in UEFI/gpt with Secure boot off, but most installs were BIOS/MBR.

    But systems that old, really do not run Ubuntu well. A lighter weight flavor works better and having an SSD makes a huge improvement.
    UEFI boot install & repair info - Regularly Updated :
    https://ubuntuforums.org/showthread.php?t=2147295
    Intro to Discourse: https://discourse.ubuntu.com/t/welco...and-help/49951

  8. #18
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    Re: Operation System not found - Ubuntu 24.04.1 LTS fresh Install on Inspiron 14R N41

    Some older laptops just don't know how to boot a GPT drive even with the bios_grub partition. The old Toshiba I had didn't like GPT and the BIOS was 2013, I think but another Toshiba with a BIOS from the same year that had some UEFI support would boot the same drive without issue. People that select to install alongside an old Windows version don't seem to have the issue, but erase disk option seems to default to a GPT partition table

  9. #19
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    Re: Operation System not found - Ubuntu 24.04.1 LTS fresh Install on Inspiron 14R N41

    Quote Originally Posted by yancek View Post
    You don't change partitions it is the physical drive and usually this deletes the OS installed as well as all data so you need backups. What was the reason for trying to create a separate boot partition? You have a Legacy install on a GPT drive and you have the BIOS_boot partition (sda1) needed for the Grub core.img file (which is there) as well as Grub code in the MBR so it should boot. Was this sysetm booting successfully for some time before you created the separate boot partition and if so, why create it? If you had problems booting you would likely have been better of posting the problem because generally, there is no need for a separate boot partition.

    You could try reinstalling the same release version of Ubuntu to sda2 and skip the /boot partition. If you select to NOT FORMAT that partition (sda2), it should reinstall and save data but I would do backups just in case. There might be a way to convert to GPT without data loss so maybe wait for someone to post or do an online search.
    I was doing a fresh/clean install and therefore did not need to backup any data. There was no issue during the installation via an USB drive. However, after the installation, my laptop could not boot from its hard drive and displayed a "operation system not found" error.

    Before posting here, I found this guide https://help.ubuntu.com/community/BootPartition which suggested a separate boot partition. I tried but that did not help. The process also created information about my laptop here https://paste.ubuntu.com/p/j372FqcC9h/

    Whether it was 2 partitions (sda1,2) or 3 partitions (sda1,2,3), my laptop could not boot from its hard drive.
    Thank you.

  10. #20
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    Re: Operation System not found - Ubuntu 24.04.1 LTS fresh Install on Inspiron 14R N41

    Quote Originally Posted by oldfred View Post
    You may not have to change to MBR(msdos).
    Only a few systems seem to complain.

    I have used gpt with my 2006 BIOS only desktop since about 2010. Learned grub needed the bios_grub partition of 1 or 2MB unformatted with bios_grub if using gparted. Or code ef02 if using gdisk.
    Converted old 2006 laptop to gpt and it did not complain.

    About the only place MBR still required is for BIOS installs of Windows. And Microsoft has required vendors to install Windows in UEFI boot mode with gpt partitioning since 2012.

    Systems prior to 2012 usually are BIOS/MBR, but a few before then were UEFI. Windows 7 could be installed in UEFI/gpt with Secure boot off, but most installs were BIOS/MBR.

    But systems that old, really do not run Ubuntu well. A lighter weight flavor works better and having an SSD makes a huge improvement.
    It seems that my laptop cannot recognize GPT format USB. It only works when I select MBR Partition scheme. I also cannot find any UEFI/GPT settings in my boot (F2) screen.
    I'll try lubuntu to see if it solves my boot problem. Thank you for your suggestion.

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