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Thread: NTFS Disk not recognized by BIOS and wont boot but Ubuntu Live CD can see it

  1. #1
    Join Date
    Apr 2013
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    NTFS Disk not recognized by BIOS and wont boot but Ubuntu Live CD can see it

    I have a problem whereby my disk which had Windows 7 32 bit wont boot. On boot up I get an error claiming that there is no hard drive installed on the system. A check in the BIOS also shows there is no hard disk drive. But when I boot with a Live CD or USB stick with Ubuntu I get to see my OS partition and Data partition and I have gotten a chance to back up all my data no problem.
    After backing up I tried formatting the disk with Ext4 and installed Ubuntu to it no problem but again when I boot up I get the same problem of the system claiming that there is no disk present. Any one know what could cause the disk not to show on start up?
    Is there any utility which can fix such a problem?
    Last edited by pawaz; April 13th, 2013 at 11:41 AM.

  2. #2
    Join Date
    Jun 2009
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    Ubuntu 16.04 Xenial Xerus

    Re: NTFS Disk not recognized by BIOS and wont boot but Ubuntu Live CD can see it

    Welcome to the forums.

    Operating systems whether Windows or Linux only see the devices the BIOS enumerate. So BIOS has to see it, but it may not show it as bootable? There also are BISO settings to lock devices, but then that is usually the opposite issue that it is seen in BIOS but not the operating system.

    Post this.

    sudo parted -l
    That is -el not cap I or num 1.
    For more info on UEFI boot install & repair - Regularly Updated :
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to change to [Solved] when/if answered completely.

  3. #3
    Join Date
    Apr 2013
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    Re: NTFS Disk not recognized by BIOS and wont boot but Ubuntu Live CD can see it

    Thank you for the reply.
    I kid u not BIOS doesnt see it and yet Ubuntu sees the disk. I dont know by which miraculous means this happened but thats the way it is. i have assembled many PCs in my day so I know what am talking about.

    anyways sudo parted -l gives me the following

    Model: ATA TOSHIBA MK5055GS (scsi)
    Disk /dev/sdb: 500GB
    Sector size (logical/physical): 512B/512B
    Partition Table: msdos

    Number Start End Size Type File system Flags
    3 1049kB 84.9GB 84.9GB primary ext4
    1 84.9GB 216GB 131GB primary ntfs boot
    2 216GB 500GB 285GB primary ntfs


    Warning: Unable to open /dev/sr1 read-write (Read-only file system). /dev/sr1
    has been opened read-only.
    Error: Can't have a partition outside the disk!


    btw is there any way a malicious virus could have caused this? I wasnt running any antivirus in windows when this happened.

  4. #4
    Join Date
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    Distro
    Ubuntu 16.04 Xenial Xerus

    Re: NTFS Disk not recognized by BIOS and wont boot but Ubuntu Live CD can see it

    Perhaps grub did not get installed or installed correctly.

    I might try this first, your install is sda3, so change all sda5's in example to sda3.
    #Comments are anything after the #, enter commands in terminal session
    #Install MBR from liveCD/DVD/USB, Ubuntu install on sda5 and want grub2's bootloader in drive sda's MBR:
    #Find linux partition, change sda5 if not correct:
    sudo fdisk -l
    #confirm that linux is sda5
    sudo mount /dev/sda5 /mnt
    sudo grub-install --root-directory=/mnt/ /dev/sda
    # The above command should work but they now suggest this command for grub 1.99 with Natty 11.04 or later - uses boot not root.:
    sudo grub-install --boot-directory=/mnt/boot /dev/sda
    #If that returns any errors run:
    sudo grub-install --recheck --root-directory=/mnt/ /dev/sda
    # If no errors on previous commands reboot into working system and run this:
    sudo update-grub


    How to restore the Ubuntu/XP/Vista/7 bootloader
    https://help.ubuntu.com/community/Re...ta/7Bootloader
    https://help.ubuntu.com/community/Gr..._Broken_System
    Reinstall grub2 - Short version & full chroot version
    https://help.ubuntu.com/community/Grub2#Reinstalling GRUB2
    For more info on UEFI boot install & repair - Regularly Updated :
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to change to [Solved] when/if answered completely.

  5. #5
    Join Date
    Apr 2013
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    3

    Thumbs up Re: NTFS Disk not recognized by BIOS and wont boot but Ubuntu Live CD can see it

    I think its not so much a grub problem as I read online of people with HP Bios and Toshiba drives having the same problem of hard disks in perfect working order not showing up.
    I have managed to boot into my old Windows 7 via grub that's on the main drive.

    I did this by having the Windows 7 installation disk in the CD drive and also a portable USB hard disk connected and somehow this makes it to boot even tho the main hard disk not being detected by BIOS is still persistent. But atleast I can get to use my Windows software. Even tho booting via this method doesnt work 100% of the time I will keep using this work around until I can get a new drive.
    am very thankful for your help Oldfred

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