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I tried to install ubuntu from USB and failed. Investigating why, I found (in Disks) that Ubuntu (running from USB) cannot see my hard drive. It only sees the USB, a CD/DVD drive and a 2.1Gb Loop device

I am inside this with a not normal way of booting. Is there any way to sense my HD?

(fdisk -l cannot see the drive either)

KansaiRobot
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  • do you see your hard drive in bios (on the boot sequence for example)? can you check if the hard disk / ssd is properly connected and supplied with power? is it a laptop? a desktop? an airplane? – Vlad Oct 21 '20 at 10:37
  • it is a desktop... Ok I have suffered to be able to boot this thing, but I guess I will go to bios again... – KansaiRobot Oct 21 '20 at 10:40
  • please tell me how can I check that? – KansaiRobot Oct 21 '20 at 10:44
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    Do you want to keep Window (and install Ubuntu alongside)? Or do you want to replace Windows and have only Ubuntu? – sudodus Oct 21 '20 at 10:45
  • if you are there, you can give also more details about the configuration: specifications, is a new pc, did it had other os installed before, etc – Vlad Oct 21 '20 at 10:45
  • I want only ubuntu. I am using a new HD that I installed. I have a huge problem with the Nvidia card that does not let me boot normally. I am not sure if there was something installed in the HD but I want to wipe it out – KansaiRobot Oct 21 '20 at 10:46
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    @Vlad, see also [this link](https://askubuntu.com/questions/1285549/ubuntu-does-not-load-from-usb#1285549). – sudodus Oct 21 '20 at 10:47
  • Try with AHCI according to ToDo's answer. If you cannot see the hard disk drive at all (for example with `fdisk`) from Ubuntu, something is seriously wrong. Can you see the HDD with an older version (18.04)? – sudodus Oct 21 '20 at 10:55
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    *"I am using a new HD that I installed"* Did you see the drive after installing it? It could be a faulty connection. – schrodingerscatcuriosity Oct 21 '20 at 10:57
  • mmm it seems it can not see the drive. It only sees HL-DT-ST DVDRA ATAPI which I suppose is a DVD. I will open the PC and verify... (sigh) – KansaiRobot Oct 21 '20 at 10:58
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    than this is a hardware problem. Can you try the hard disk in another computer? – Vlad Oct 21 '20 at 13:41
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    Thanks. I solved this problem by reattaching the disk. Now I only got the other problems left (not rebooting, failing to install ubuntu etc) but at least this one is solved – KansaiRobot Oct 21 '20 at 15:03
  • Thanks for sharing the solution :-) – sudodus Oct 21 '20 at 16:41

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I had a similar issue with my laptop which I solved by changing one BIOS setting.

In BIOS System Configuration set Sata Operation to "AHCI".

To Do
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  • I am checking this now Where can I see the Sata? I am searching in the BIOS screen – KansaiRobot Oct 21 '20 at 10:56
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    @KansaiRobot, Only you can see it, because each computer (brand and model) has its own UEFI/BIOS system. You must search in the menus until you find it. – sudodus Oct 21 '20 at 10:58