Category Archives: Mac OS X

Securely Connect to Linux Instances Running in a Private Amazon VPC

Important note: You should enable SSH agent forwarding with caution. When you set up agent forwarding, a socket file is created on the forwarding host, which is the mechanism by which the key can be forwarded to your destination. Another … Read more

How to Flush DNS Cache in Mac OS X EI Capitan: 10.11, 10.10.4

Most useful way if you’re a network administrator, Server administrator or web developer. And you’re working with Mac OS X machine likely MacBook Pro, MacBook Air, iMac or Mac Mini. Furthermore each version of Mac OS X has different- different … Read more

Mac Won’t Sleep? Here’s How to Find Out Why And Fix It

Find why a Mac won't go to sleep

On the rare occasion that you go to put a Mac to sleep and, well, it won’t sleep, there’s an easy to way to find out what the holdup is. Though this is a somewhat technical approach, it should give … Read more

No Wireless When Install 14.04 on Macbook Pro

From a terminal, type the following commands:

sudo apt-get update
sudo apt-get install firmware-b43-installer

Then, reboot and you should be good to go.… Read more

SD Card Reformat on a Mac Computer

What are you trying to do?

Format an SD card in Windows

Where does it apply?

  • Mac OS X

How to do it

Here is a link that shows you how to reformat an SD card (or MicroSD card) on … Read more

How to burn .iso to USB drive

CD/DVD drives have gone obsolete and USB drives have become more popular and cheaper now. Thats the reason we prefer to use USB drives instead of CD or DVD to install a new system. 
There are many utilities available which … Read more

How to write an image file to an SD card under Mac OS X (for Raspberry Pi)

Find the SD card device

In this case, the SD card is /dev/disk4. DO NOT get this wrong or you may destroy all the data on the wrong disk/card/drive.

diskutil list

/dev/disk0
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        
Read more

How to Burn Disc Images in OS X El Capitan Without Disk Utility

Burn disc images in OS X El Capitan

Apple removed the ability to burn disc images from Disk Utility in OS X 10.11 and newer, and while that makes sense for many Macs that no longer have SuperDrives, CDRW, and DVD burners, for those who use an external … Read more