Ubuntu 20.04 not showing HDD during installation

Sohang Chopra

2/28/23, 9:40 PM

I am trying to install Ubuntu 20.04 alongside Windows 10 in my laptop. My Hard Drive shows as /dev/sda in gparted (while running Ubuntu directly from USB) - but when I try to install Ubuntu, only /dev/nvme0n1 (SSD) shows, /dev/sda does not show as an option.

Laptop Specs -> ASUS, 64 bit with 1TB HDD, 13GB SSD

What I've done so far:

Downloaded Ubuntu ISO and created bootablereated bootable Ubuntu USB
In Windows, created partition for installing Ubuntu - 350GB out of 1000GB. This 350GB is currently unallocated memory.
Disabled Hibernate on Shut Down in Windows
In BIOS, disabled Fast Boot, Secure Boot, USB Legacy Mode, RAID, CSM Support
Switched from Intel RST to AHCI mode
Selected USB (~32GB) in boot order
Launched Ubuntu from USB by selecting Try Ubuntu option.
Ran GParted too view partitions - as expected, /dev/sda contains ~500GB Windows partition, 350GB unallocated. /dev/nvme0n1 (SSD) and /dev/sdb (USB) are also shown. I've attached GParted screenshots in a section below.
Ran Install Ubuntu (from shortcut on desktop in live Ubuntu session). Installer showed that it could not detect any other OS. I tried to choose a partition for installation, but installer only shows dev/nvme0n1 (SSD), with no option for choosing /dev/sda (HDD). See installation screenshots below.
After this, I quit installation and shut down the computer.

Note: I am still able to use Windows 10 by first switching AHCI -> RST in BIOS - if I don't do that, then computer refuses to move past BIOS screen.

Screenshots from GParted

/dev/nvme0n1 - SSD - https://imgur.com/a/I0fRGK6
/dev/sda - HDD - https://imgur.com/a/lcINdIK
/dev/sdb - SSD - https://imgur.com/a/AevjgsY

Screenshots from Ubuntu Installation Process

Installation Type Screen (no OS detected) - https://imgur.com/a/UTcz9vw
Partition Selection for Installation (HDD not showing) - https://imgur.com/a/xvBpVqB

Note: - In last screenshot (Partition Selection), dropdown has only one value (/dev/nvme0n1) - /dev/sda doesn't show in dropdown.

Please advise me about what I can try now for resolving this problem. If I have forgotten some relevant detail, then please let me know.

Edits (after some advice on Reddit)

GParted Error Popups

Could not stat device /dev/mapper/isw: untested metadata version 1.4.01 found on /dev/sda - No such file or directory.
Not all of the space available to /dev/sda appears to be used, you can fix the GPT to use all of the space (an extra 4544 blocks) or continue with the current settings?
- Options: Fix | Ignore

I've also tried these suggestions but they didn't work

I ran command powercfg /hibernate off as Admin in Windows 10.
I created a new ext4 file system partition in the unallocated space (350GB) I left for Ubuntu to install.

0 + 0

dual-boot

usb-installation

Elon Musk

I sit in a Tesla and translated this thread with Ai:

EN: Ubuntu 20.04 not showing HDD during installation

TH: Ubuntu 20.04 ไม่แสดง HDD ระหว่างการติดตั้ง

RO: Ubuntu 20.04 nu afișează HDD-ul în timpul instalării

RU: Ubuntu 20.04 не показывает жесткий диск во время установки

VI: Ubuntu 20.04 không hiển thị ổ cứng trong khi cài đặt

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