Category: Tips and Tricks

How to Update a Lenovo BIOS with USB

Lenovo provides an ISO for CD/DVD burning and an EXE for running the executable from within Windows.  There is NO support for an ISO booting from a USB.  Many modern laptops are ordered without a CD ROM and maybe an extra hard drive in it's place.  Most people use USB sticks for the majority of their effort when the need...Read More »

Add Root Certificates to a CentOS Linux Server

Adding a root authority certificate to a server that does not already have the cert may be added to the server manually. Install the ca-certificates package: Enable the dynamic CA configuration feature: Add it as a new file to /etc/pki/ca-trust/source/anchors/: Use command: CentOS 7 CentOS 7.0 and later include a shared store for certificate authorities. Read the manual for additional...Read More »

How to Combine Multiple Images Quickly

If you have ever started an eBay auction and wanted to add your large picture collection to it, you will quickly realize that you can only add up to 12 pictures.  While it is true pictures can be added to the body of the auction and linked to an alternate sources, that is extra work. As a work-a-round to the...Read More »

Foxit Reader: Invert All Colors of Text

Foxit Reader is a fantastic alternative to Adobe Reader.  It is straightforward, not bloated, and offers functionality that I find useful.  Having used it as a replacement for several years from time to time there is something worth customizing.  The point of this article is one of those customizations, invert the text and background from black text and white background...Read More »

Lenovo T460s won’t boot from USB

A USB thumb drive which boots successfully on any number of other computers doesn't want to cooperate with the Lenovo Thinkpad T460s.  The T460s laptop simply refuses to boot to the USB drive. The resolution is remarkably simple. Boot the laptop to the BIOS and ensure the following two settings: Turn off secure boot Turn UEFI boot to both (meaning...Read More »

One way to check if USB or DVD is bootable

You may have put a lot of time creating that perfect ISO or even downloading one for use as a bootable USB or DVD.  As with many cool projects, you let this one go and moved on to something else.  Then the need to revisit that perfect ISO has returned and all those web pages you had opened are closed...Read More »

How to create a directory with permissions in Linux

The other day I was reading through some newsgroups on how to better automate a script.  Part of the script contained an interesting command that looked promising; however, could not get it work. This is the command. While it looks interesting, a quick execution of it created three directories, icinga:icinga, 0700, and mydirectory. This was not the desired effect. Looking...Read More »

Disable Sleep mode using powercfg

After setting a Windows 7 computer sometime ago, I started to receive complaints that it kept going to sleep.  There is a GUI way of doing things, and fortunately, Microsoft has provided us with a command. Source(s) More »