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Debian 12 Expert CLI Install

Nov 19 2025
First off, you may wonder why I'm writing this guide for Debian 12 when Debian 13 just came out. The reason for this is because Debian 13 doesn't seem to be compatible with Whonix. Besides Debian 12 will receive security updates until 2028. So let's install it!
Let's assume you have already created installation media such as a DVD or USB drive.
- If you have not created installation media and you have Windows, follow this guide.
- But don't install Ubuntu! Instead download Debian 12.12 ISO from the following link.
Boot installation media on your laptop or PC by entering BIOS and changing boot order.
If you've made it this far, great work! Now we are ready to begin the installation.
01. Select 'Accessible dark contrast installer menu'
Debian 12 installation terminal screeshot
02. Select 'Advanced options'
Debian 12 installation terminal screeshot
03. Select 'Expert Install'
Debian 12 installation terminal screeshot
04. Just hit Enter.
Debian 12 installation terminal screeshot
05. Just hit Enter.
Debian 12 installation terminal screeshot
06. Just hit Enter.
Debian 12 installation terminal screeshot
07. Just hit Enter.
Debian 12 installation terminal screeshot
08. Just hit Enter.
Debian 12 installation terminal screeshot
09. Just hit Enter.
Debian 12 installation terminal screeshot
10. Just hit Enter.
Debian 12 installation terminal screeshot
11. Just hit Enter.
Debian 12 installation terminal screeshot
12. Just hit Enter.
Debian 12 installation terminal screeshot
13. Just hit Enter.
Debian 12 installation terminal screeshot
14. Just hit Enter.
Debian 12 installation terminal screeshot
15. Just hit Enter.
Debian 12 installation terminal screeshot
16. Just hit Enter.
Debian 12 installation terminal screeshot
17. Just hit Enter.
Debian 12 installation terminal screeshot
18. Just hit Enter.
Debian 12 installation terminal screeshot
19. Just hit Enter.
Debian 12 installation terminal screeshot
20. Type the Host name. Hit Enter.
Debian 12 installation terminal screeshot
21. Type Domain name. Hit Enter.
Debian 12 installation terminal screeshot
22. Just hit Enter.
Debian 12 installation terminal screeshot
23. Select 'No'. Hit Enter.
Debian 12 installation terminal screeshot
24. Type full name. Hit Enter.
Debian 12 installation terminal screeshot
25. Type user name. Hit Enter. Remember this name. You will need it to sign in.
Debian 12 installation terminal screeshot
26. Type password. Hit Enter. Write this password down and keep it safe.
Debian 12 installation terminal screeshot
27. Retype password. Hit Enter. Write this password down and keep it safe.
Debian 12 installation terminal screeshot
28. Just hit Enter.
Debian 12 installation terminal screeshot
29. Just hit Enter.
Debian 12 installation terminal screeshot
30. Just hit Enter.
Debian 12 installation terminal screeshot
31. Select your time zone. Hit Enter.
Debian 12 installation terminal screeshot
32. Just hit Enter.
Debian 12 installation terminal screeshot
33. Just hit Enter.
Debian 12 installation terminal screeshot
34. Select 'use entire disk and set up encrypted LVM'. Hit Enter.
Debian 12 installation terminal screeshot
35. Select disk. Use your brain here. Don't select the installation USB drive!
Debian 12 installation terminal screeshot
36. Just hit Enter.
Debian 12 installation terminal screeshot
37. Select 'Yes'. Hit Enter.
Debian 12 installation terminal screeshot
38. Type Password. Hit Enter. Write this password down and keep it safe.
Debian 12 installation terminal screeshot
39. Retype password. Hit Enter. Write this password down and keep it safe.
Debian 12 installation terminal screeshot
40. Just hit Enter.
Debian 12 installation terminal screeshot
41. Just hit Enter.
Debian 12 installation terminal screeshot
42. Just hit Enter.
Debian 12 installation terminal screeshot
43. Select 'Yes'. Hit Enter.
Debian 12 installation terminal screeshot
44. Just hit Enter.
Debian 12 installation terminal screeshot
45. Just hit Enter.
Debian 12 installation terminal screeshot
46. Just hit Enter.
Debian 12 installation terminal screeshot
47. Just hit Enter.
Debian 12 installation terminal screeshot
48. Just hit Enter.
Debian 12 installation terminal screeshot
49. Just hit Enter.
Debian 12 installation terminal screeshot
50. Just hit Enter.
Debian 12 installation terminal screeshot
51. Select 'Sweden'. Hit Enter.
Debian 12 installation terminal screeshot
52. Just hit Enter.
Debian 12 installation terminal screeshot
53. Just hit Enter.
Debian 12 installation terminal screeshot
54. Just hit Enter.
Debian 12 installation terminal screeshot
55. Just hit Enter.
Debian 12 installation terminal screeshot
56. Select 'Yes'. Hit Enter. This allows you to download Tor Browser using CLI.
Debian 12 installation terminal screeshot
57. Just hit Enter.
Debian 12 installation terminal screeshot
58. Just hit Enter.
Debian 12 installation terminal screeshot
59. Just hit Enter.
Debian 12 installation terminal screeshot
60. Optionally, Select 'Install security updates automatically'. Hit Enter.
Debian 12 installation terminal screeshot
61. Just hit Enter.
Debian 12 installation terminal screeshot
62. Deselect all boxes except bottom one using arrows and Spacebar. Hit Enter.
note: When installing like an expert start off with command line interface only and add minimal desktop environment, such as i3-wm or mate-core or even gnome-core as needed. A minimal install saves system memory and increases security by reducing attack surface.
Debian 12 installation terminal screeshot
63. Just hit Enter.
Debian 12 installation terminal screeshot
64. Just hit Enter.
Debian 12 installation terminal screeshot
65. Just hit Enter.
Debian 12 installation terminal screeshot
66. Use your brain. Select your main hdd/ssd not the usb. Hit Enter.
Debian 12 installation terminal screeshot
67. Just hit Enter.
Debian 12 installation terminal screeshot
68. Just hit Enter.
Debian 12 installation terminal screeshot
69. Just hit Enter. That's it, you're done installing.
Debian 12 installation terminal screeshot
70. When you reboot you'll see this screen. Just hit Enter.
Next you'll be asked for your encryption password, user name, and user password. Hope you wrote them down somewhere safe. Great work!
Debian 12 installation terminal screeshot
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