Make sure windows was shut down all the way. Normally when you shutdown windows, it only hibernates and it locks it's partitions to prevent editing. I tried installing Zorin for a family member recently, and it couldn't install until I booted back into windows and shut it down fully.
To shutdown fully, in windows you need to either hold shift while clicking the shutdown button, or open the run box and run the command shutdown -s -t 00
Locks as far as windows will not be happy that you changed them. If you're getting rid of windows don't worry about shutting down safely.
Really just a guess but since others have pointed to bios raid stuff this may be relevant:
https://wiki.debian.org/DebianInstaller/SataRaid
But also you probably want to disable raid in bios if it's enabled.
I had issues getting kernel versions on Debian seeing hard drives back when it got bad in the 2010's (which is why I switched to Fedora, which was what I used as my primary distro before Debian). For experimental purposes, I'd try something with bleeding edge driver support like Fedora, not even to install, just to see if it sees the drive. I've even seen issues with kernel v various hardware things on Ubuntu/Mint v Fedora. I am currently very mad at Fedora because 40 is ass, and I'm having PTSD about Debian getting bad (I do hear it gud now) so I'm in no way recommending Fedora rn, but it will see the hardware if it's a nonproprietary driver newness issue
So installer is not recognizing your hard disk. There are plenty of potential causes but One thing to check is bios configuration of the disk drive, is the drive configured as raid? I’ve run into that a couple of times recently.
I had this issue. A laptop with a single ssd was configured as raid 0 in bios out of the box. Changed it – debian immediately recognizes the drive.
Push ctrl-alt-3 or 2 or something till you get a terminal. Run the command ls /dev/sd*
Post what it says back to you.
E: if you don’t see two drives, do ls /dev/nvm*
A newer computer could also be /dev/nvm<something>
Shit that’s a good point! I’ll edit my post.
@BobGnarley Try disabling secure boot in the bios. And maybe UEFI boot path security - I think I've seen that cause issues in the past too.
And if it's a Dell, set disk access from raid to AHCI.
I literally had to do this 2 days ago.
It is a dell its an Optiplex 3070 mini. You just boot windows into safe mode to change that right?
Probably something in the bios
Are you trying to install while booted into Windows? If so that's not how to install Linux from a bootable USB.
No I made the USB boot first before windows its the Debian 12 graphical installer
There may be any number of reasons why the disk is not an option. You may want to update your post body with the model of your computer in case someone has had a similar experience and can give you a heads up about what to do.
As a quick test you might want to flash another distribution image to the USB and see if that gives you the option to install to the system drive (you don't have to install, just check if the option is available). It's an easy way to find out if it's a quirk of the distribution installer or something about your computer such as bios setting etc.
This post implies that you're a beginner. I wouldn't recommend debian as a beginner distro.
I wholeheartedly disagree. But I will say that maybe a mid-weight flavor of Debian would be better.
Honestly I may just keep doing the Debian install now that I have some insight on what might have gone wrong.
Ignore the gatekeeping and do your thing. Nice choice on Debian.
If you continue to have trouble but still want a Debian experience, might I recommend MX Linux. I cut my teeth on that for a long time, and it was a really great experience for me. And the installer is super easy to navigate.
Its true really trying to break through the learning curve at the moment hands on but yes I think you might be right.
Wouldn't recommend ubuntu, but can vouch for linux mint, which was my first distro. You will generally find an answer for any question you might have by including mint in your search.
Fedora or Ubuntu have the best installers. I would suggest Fedora.
From Wikipedia, the free encyclopedia
Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
Community icon by Alpár-Etele Méder, licensed under CC BY 3.0