How can I load an operating system from a certain partition with GRUB?












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I've been looking everywhere for this, but I need the answer straightforward from a source at this point.



So, my understanding is that the UEFI/BIOS will boot into a certain storage device, whether it be HDD, SSD, USB, DVD, etc. Then this will pass control to the boot-loader, which is GRUB in Linux operating systems. (additional question: do other Linux OS's require different bootstrap loaders?) Please correct me if I am mistaken in any of this information.



Does the GRUB load an OS from a specific partition on the drive? If so, how can I direct it to boot from a specific partition? Will installing certain ISOs in certain partitions using GParted work? I am currently running Ubuntu on a USB SD Card Reader with a MicroSD card temporarily.



I am relatively new to Linux, so just bear with me :)









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    I've been looking everywhere for this, but I need the answer straightforward from a source at this point.



    So, my understanding is that the UEFI/BIOS will boot into a certain storage device, whether it be HDD, SSD, USB, DVD, etc. Then this will pass control to the boot-loader, which is GRUB in Linux operating systems. (additional question: do other Linux OS's require different bootstrap loaders?) Please correct me if I am mistaken in any of this information.



    Does the GRUB load an OS from a specific partition on the drive? If so, how can I direct it to boot from a specific partition? Will installing certain ISOs in certain partitions using GParted work? I am currently running Ubuntu on a USB SD Card Reader with a MicroSD card temporarily.



    I am relatively new to Linux, so just bear with me :)









    share







    New contributor




    TheRyGuy is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.























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      I've been looking everywhere for this, but I need the answer straightforward from a source at this point.



      So, my understanding is that the UEFI/BIOS will boot into a certain storage device, whether it be HDD, SSD, USB, DVD, etc. Then this will pass control to the boot-loader, which is GRUB in Linux operating systems. (additional question: do other Linux OS's require different bootstrap loaders?) Please correct me if I am mistaken in any of this information.



      Does the GRUB load an OS from a specific partition on the drive? If so, how can I direct it to boot from a specific partition? Will installing certain ISOs in certain partitions using GParted work? I am currently running Ubuntu on a USB SD Card Reader with a MicroSD card temporarily.



      I am relatively new to Linux, so just bear with me :)









      share







      New contributor




      TheRyGuy is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.











      I've been looking everywhere for this, but I need the answer straightforward from a source at this point.



      So, my understanding is that the UEFI/BIOS will boot into a certain storage device, whether it be HDD, SSD, USB, DVD, etc. Then this will pass control to the boot-loader, which is GRUB in Linux operating systems. (additional question: do other Linux OS's require different bootstrap loaders?) Please correct me if I am mistaken in any of this information.



      Does the GRUB load an OS from a specific partition on the drive? If so, how can I direct it to boot from a specific partition? Will installing certain ISOs in certain partitions using GParted work? I am currently running Ubuntu on a USB SD Card Reader with a MicroSD card temporarily.



      I am relatively new to Linux, so just bear with me :)







      grub gparted





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      share



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