USB port not working on Mac

Recently I connected an external hard-disk to my new MacBook and observed that it was not properly detected on one of the USB ports. But I can see that it is powering my HDD.
I tried switching to other port and it worked. I simply ignored it by thinking that my HDD cable might be loose.

Now I bought a new USB drive and to get it detected, I have to insert and detach it multiple times. And as usual, I suspected the new USB drive, as my Mac is brand new. And planned to replace my USB drive.

Now my HDD came back to my mind. And also my earlier laptop, in which few KEYS went unresponsive due to accumulated charges.

By little researching I found that I'm not alone. The solution that worked for me was "Resetting SMC"

Here is the procedure I followed:

Shut down the Mac and connect the power cable
Hold down Shift+Control+Option+Power concurrently for a few seconds.
When the light on the power adapter blinks or changes colors you’ll know SMC reset is complete
Release all keys at the same time
Now boot your Mac as usual.

Now I'm happy that I don't have to replace any of my devices.

Comments

Find an old archived link on web

In recent past, I'm need of a tool, to which the provider no longer provides the link to download. Previously I've blogged about Openlogic , which serves this purpose. Openlogic contains unofficial fork of the original repository, and to be precise, I haven't found the tool I'm in search of. I found Internet Archive : Wayback Machine , while searching for it. It has got 412 billion stored pages and you may look into older versions of any website or you can get link to any software/tool which used to be a website. All you have to do is, provide a link or part of a link to search. For example, to know how my website used to be in 2013, just type http://www.thechaithanya.com and you can see a calender with some of the dates highlighted, on which they had the snapshot of my website. You can even provide a part of link. For example, to get the link of older version of Android ADT, search using http://dl.google.com/android/adt/* You can find a set of links and...

JavaScript - Singleton Pattern

The singleton design pattern is probably the simplest and most common pattern in JavaScript. So why should you use the singleton pattern? Encapsulation of members & functions Creates its own Namespace A singleton is a single instance object Encourages code reuse Improves readability because you can logically organise your code The point of a singleton is to only have one instance. A shopping cart is a good example of something that you may want only a single instance of at one time. The simplest form of Singleton is an object literal. This loose form of Singleton cannot be instantiated. All of the members are now accessible through the Singleton variable, accessible through dot notation. var myCart = { self: this , totalCost: 0, totalQty: 0, cart: {}, getCart: function (){ }, updateCart: function (){ } }; alert( "Total cost: ...

Reverse Engineering : Extract contents from .img file

Unyaffs is a program to extract files from a YAFFS2 file system image. Currently it can only extract images created by mkyaffs2image. Download the source from here . Compiling : Extract the contents into a suitable place and run the following command make Usage : unyaffs [options] <image_file_name> [<extract_directory>] Options: -d detection of flash layout, no extraction -b spare contains bad block information -c <chunk size> set chunk size in KByte (default: autodetect, max: 16) -s <spare size> set spare size in Byte (default: autodetect, max: 512) -t list image contents -v verbose output -V print version Source: Official github repository

TechniFul

Search This Blog