VirtualBox: 64-bit Guest OS

While playing with Vagrant, VirtualBox, and MongoDB on my old ASUS ROG Generation 1 - which has Intel Q720 CPU and runs Windows 10 64-bit - I ran into this error.

VT-x is not available(VERR_VMX_NO_VMX).

VirtualBox error: Intel VT-x is not available

Also, VirtualBox list only 32-bit version for guest OS.

It is so weird because I can installed Ubuntu 64-bit as guest OS in VirtualBox while booting this laptop in Windows 7 64-bit.

I tried removing Hyper-V feature and reboot.

VirtualBox now display 64-bit version of guest OSes.

And Vagrant works too.

Qubes OS: Fedora 30

Create a new Standalone VM based on fedora-29 VM template Extend root partition: run command on dom0 tuyen@dom0:~ $ qvm-volume extend fedora-30:root 12288MB Set qrexec_timeout to 600 seconds tuyen@dom0:~ $ qvm-pref --set fedora-30 qrexec_timeout 600 $ sudo dnf upgrade --refresh $ sudo dnf install dnf-plugin-sytem-upgrade $ sudo dnf system-upgrade download --release=30 Install fedora-30 template Run the following command on dom0 terminal $ sudo qubes-dom0-update qubes-template-fedora-30 Install Adobe Flash Player Adobe Flash Player will not go away soon. So, let's grab the latest version of Adobe Flash Player , then install using yum or dnf command. Verify if Adobe Flash Player is installed and works by visiting https://helpx.adobe.com/flash-player.html [user@fedora-30 ~]$ sudo dnf install Downloads/flash-player-npapi-32.0.0.238-release.x86_64.rpm Last metadata expiration check: 0:37:03 ago on Fri Aug 30 09:18:10 2019. Dependencies resolved. =========...

How to charge your device from USB Port

First of all, check BIOS Settings of your laptop or desktop Dell Look for USB PowerShare BIOS Settings: USB PowerShare Lenovo Look for Always On USB Charge in Off Mode BIOS Settings: Enable Always On USB Charge in Off Mode

Python: Free Online Courses

Ever thinking about which programming language to learn first? You can learn Python for free with these online courses.

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