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The June 2026 Secure Boot Certificate Expiry: What You Need to Know

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If you dual-boot or run a Linux distribution with Secure Boot enabled, you may have heard about a major security deadline. The original Microsoft 2011 UEFI Third-Party Certificate Authority (CA) keys, which most Linux distributions rely on to sign their initial bootloaders (shim) on consumer PC hardware, expired at the end of June 2026 The expiration of a certificate doesn't invalidate already-installed, signed binaries on your system; firmware doesn't check expiration dates at boot time. However, moving forward, future Linux bootloader updates and security patches will be signed exclusively using the new Windows UEFI CA 2023 key . If your motherboard's firmware database isn't updated to trust this new 2023 key, your Linux system may eventually experience package management blocks or fail to apply critical bootloader updates. Before running updates, check if Secure Boot is active and see if your system already recognizes the 2023 certificate hierarchy. Open your termi...
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Dual boot windows 7 / windows 10

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1. Burn the windows 7 iso to the USB drive using Rufus

2. Install w7 

We will need the driver for your internet connection (modem) go to the corresponding website

3. Partition hard disk 

• right click on start, disk management, right click on C drive 

• shrink volume, leave it default approx 100000mb (100gb) 

4. Download windows 10 iso

5. Reboot to bios 

6. Boot from USB 

7. Custom installation

8. Install w10 to the unallocated space (the second partition of C:)

9. Run through the setup

If you need a licensed windows visit this website





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