# How to remove broken, \*newer\* boot entry?
**URL:** https://discourse.nixos.org/t/how-to-remove-broken-newer-boot-entry/15457
**Category:** Help
**Created:** [October 12, 2021, 9:56am UTC](https://discourse.nixos.org/t/how-to-remove-broken-newer-boot-entry/15457 "2021-10-12T09:56:54Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@matklad](https://discourse.nixos.org/u/matklad)
#### Post date: [October 12, 2021, 9:56am UTC](https://discourse.nixos.org/t/how-to-remove-broken-newer-boot-entry/15457/1 "2021-10-12T09:56:54Z")
I’ve run `nixos-rebuild switch --upgrade`, and that broke Vivaldi for me (some pages just die for whatever reason). So I rebooted into the previous config, pre-upgrade, and run `/run/current-system/bin/switch-to-configuration boot` to make it current.
Now when I boot, the previous configuration is selected as a default. However, the newer, broken configuration is still there, and gives me aesthetics pain 🙂 How do I remove it from boot menu?
---
### Author:  [@matklad](https://discourse.nixos.org/u/matklad)
#### Post date: [October 14, 2021, 8:45am UTC](https://discourse.nixos.org/t/how-to-remove-broken-newer-boot-entry/15457/2 "2021-10-14T08:45:55Z")
Figured that out!
```plaintext
λ ls /nix/var/nix/profiles/
drwxr-xr-x - root 23 Dec 2020 per-user
lrwxrwxrwx 15 root 14 Oct 11:41 system -> system-105-link # Note: points to a *previous* generation.
lrwxrwxrwx 88 root 1 Oct 12:38 system-105-link -> /nix/store/cdlxkpcrz9pyrb9sjkwgjmrj06ai7zvp-nixos-system-moby-21.11pre319562.c21ba4f7bb4
lrwxrwxrwx 88 root 14 Oct 11:36 system-106-link -> /nix/store/73cny4fm4jfnqdzfm1vkz7xrj2rq4m2v-nixos-system-moby-21.11pre322478.e4ef597edfd
λ exa -l /boot/loader/entries/
.rwxr-xr-x 433 root 14 Oct 11:41 nixos-generation-105.conf
.rwxr-xr-x 433 root 14 Oct 11:41 nixos-generation-106.conf
λ doas rm /nix/var/nix/profiles/system-106-link
λ doas rm /boot/loader/entries/nixos-generation-106.conf
```