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After starting to boot from a memory stick to install Ubuntu (even if i didn't erase the ubuntu 18 and Windows 10 from laptop), i tryed to repaire a problem when i upgrade Ubuntu from 18 version to 22, because i got an error, after i repaire, i got another error, and so on..until i fond myself into: grub rescue>black screen. S-o i' ve found thé normal.mod file into (hd0, msdos9) and i loaded thé normal module. But, now i have thé error:"grub_disk_native_sectors not found".

Why do this happen, and how can I erase all and install Ubuntu again?

Artur Meinild
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Cass Andra
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    If you have MBR(msdos), is this a 10 year old or older system? Windows has required vendors to install in UEFI boot mode to gpt partitioned drives since Windows 8 released in 2012. What Ubuntu live installer are you now using 22.04? What is your hardware, vendor, model & video card/chip? Can you boot live installer on USB flash drive? – oldfred Feb 21 '23 at 15:45
  • You mention the year format in relation to Ubuntu; ie. are you asking about Ubuntu Core 18, Ubuntu Core 22 etc. as they are different products and thus upgrade/install differently to the more common year.month products (ie. 18 & 18.04 are different Ubuntu products; the year being snap only systems that don't require user-level packages to upgrade when you release-upgrade unlike the year.month systems). Ubuntu also has 5 installers available (over varying releases) so it matters, as some do better in some circumstances than others... – guiverc Feb 21 '23 at 20:58
  • Does this answer your question? How do I install Ubuntu? – Artur Meinild Feb 22 '23 at 09:30

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