Home How to
Category:

How to

How to reinstall Mac OS – An A to Z guide for Mac Os installation
Computer SoftwareHow toMacOSOperating System

How to reinstall Mac OS – An A to Z guide for Mac Os installation

by Bhagya
written by Bhagya

Apple recently declared that there are now nearly 100 million active Mac users. Sometimes in Windows, Mac OS, or anything other operating system’s problems can be fixed by reinstalling. If you need to sell or give away your old mac or modify your Mac you should reinstall the OS. Many computer users do it regularly. This will clean up and speed up the machine and clear all unwanted programs. This process consumes time. When you have malfunctions in the operating system you must upgrade or reinstall the OS. Let’s look at how to reinstall the Mac operating system on your Mac.

Reinstalling from Mac OS recovery

Mac OS recovery makes it easy to reinstall the Mac operating system. All you need is an Internet connection. Even in the Wi-Fi menu, you can select Mac OS recovery.

  • First of all turn on your Mac
  • Start-up from the Mac OS recovery immediately press and hold one of the following set of keys on the keyboard the keys are;
  1. Command (⌘)-R
  2. Option-⌘-R
  3. Shift-Option-⌘-R

Release the keys when the Apple logo, spinning globe, or another start-up screen appears. Option A one will reinstall the latest Mac OS which was installed on your Mac this option is the most common one. Option B will upgrade the latest Mac which is compatible. If you need to reinstall them closest version still available go for option C.

After that, the new window will be prompted to enter a password. This password is a firmware password or the password of a user or administrator of this Mac. Enter the relevant password to continue the process. Then you will be given the options list off Mac OS utilities. From the list, you have to click on the reinstall Mac OS option.

Decide if you need to free your disc

If you are giving away the mac ensure that you must erase personal data and restore it to factory settings.  In those cases don’t just delete your information. Backup them into an external device for future use. If you just need to clean up your machine and give it to a fresh start, you won’t probably need to erase your data from your disc. After deleting the data before installing Mac OS select utility from the utility window. Next click on ‘continue’.

 Installing the operating system

Now you are ready to install Mac OS. Firstly select it to reinstall Mac OS option from the utility window then click continue. You have to follow the onscreen instructions that are given. Choose a specific disc on which to install.

  1. Firstly You must unlock your disc with the relevant password you normally use to log into a Mac if it’s requesting.
  2. If it is unable to see your disc or if it is saying ‘That it can’t install on your computer or volume you need to erase your entire disc first.
  3. Sometimes the installer is mentioning 4 different versions of Mac OS than you expected you will need Mac OS recovery exceptions.
  4. you need to choose between installing on Macintosh HD or Macintosh HD data choose Macintosh HD if it’s asking.

The reinstalling

When the installation process is happening you have to make sure that the computer will not put to sleep also avoid closing its lid. During the period your Mac might restart and appear a progress bar. After the Mac restarts to set up assistant you have to give your own formation and complete the setup.

If you are giving away your Mac press Command + Q to stop the setup assistant and avoid completing setup. After that shutdown it. Now the new buyer can input their own information to complete set up.

0 comment
0 Google +Pinterest
How to choose a processor which suits you?
AMDComputer hardwareHow toIntelProcessor

How to choose a processor which suits you?

by Bhagya
written by Bhagya

Like we have a brain to control all our body functions, computers also have a brain. The brain of a computer is called the “Processor”. With the name processor, you will always hear another word – The core. A core is the single processing unit inside a processor. At a single time, a core can only handle a single task. So, the more cores you have of course the more work you can do at a time.

Clock speed is another important fact which affects the power and the speed of a computer processor. The number of cycles a processor can execute per second is defined as the clock speed of a processor. A cycle is actually a pulse synchronised by an oscillator.

The processor is the brain of a computer

How to choose a processor considering the number of cores

Earlier processors just had a single core. But, nowadays most processors at least have two core units. General use laptops usually have 2 core processors like Intel core i7 10710U and AMD’s Ryzen 5 3500U  with power-saving capabilities. These laptops are okay for general purposes but not good with multitasking.  But, special laptops like gaming laptops or workstations laptops usually have processors with a minimum of four cores. Most new desktop computer processors have four or more cores. So, if you have the question laptop or desktop go for a desktop if you want to do many tasks at once. But, if you want mobility plus multitasking capabilities go for a workstation or gaming laptop with quad core processor.

General multitasking

For general multitasking processes like video encoding, graphic designing, 3d modeling a processor with four to eight cores can perform very well. But, more demanding tasks like server management, artificial intelligence, and deep learning advanced processors with a very high number of processors are recommended.  The latest Intel’s Xenon series processors have up to 52 cores while the AMD’s epic processors have more than 128 cores in a single processor.

Integrated graphics

Some processors come with integrated graphics processing capabilities.  If you are not willing to buy a graphic processing unit (GPU) always choose a processor with internal graphics. Some processors like AMD ryzen G series processors have very good and high-end graphic processing abilities. Tyzen 5 3400g processor has a vega 11 graphic processing unit. This unit has equal performance as Nvidia GeForce GT 1030 GPU.

How clock speed affect processing power

Simply the more is better.  This means if you have a processor with a higher clock then it is faster. But, clock speed is NOT the only factor that affects the speed of a CPU. The clock speed of modern processors are measured in Gigahertz (GHz).

The ancestors of today’s processors like Intel 8080A (released in 1976)  just had a base clock speed of 5 MHz. (Megahertz) One Gigahertz is equal to thousand megahertz. So, can you imagine how slow the old processors were? We are actually living in the future. The first Intel Pentium processors just had a clock speed of 100 MHz. The first processor to reach a Gigahertz range clock speed was AMD’s Athlon which was released in the 2000s.

The modern processors like Intel Core i7-8086K (5 GHz) and AMD’s Ryzen 9 3950x (4.6 GHz) have mind-blowing base clock speeds comparing to the processors we had 10 years ago.

Add proper cooling methods before overclocking

Over clocking-ability

Overclocking is using a processor in higher clock speed than what is recommended by the manufacturer. For heavy tasks like gaming, video encoding, 3d modeling, AI, deep learning and machine learning computers need to have a higher clock speed to acquire a good processing efficiency.  So, the users can overclock the processor to acquire a high clock speed.

But, not all processors support overclocking.  All modern AMD processors like the AMD FX series, AMD  Ryzen Series, AMD Epyc Series, and AMD Threadripper series processors are unlocked and support overclocking. But, when it comes to the Intel series, only the K series processors are unlocked and capable of overclocking.

Overclocking warning

Overclocked processors consume a higher power than the recommended power. So, they generate more heat than a non overclocked processor. If you want to overclock your processor consider replacing the stock cooler with higher efficiency.  Consider buying a liquid cooler or a mineral oil dipped build to effectively remove the excessive heat generated from the CPU.

0 comment
0 Google +Pinterest
How to choose a processor which suits you?
Computer hardwareGamingHow toProcessor

How to choose a processor which suits you?

by Bhagya
written by Bhagya

Like we have a brain to control all our body functions, computers also have a brain. The brain of a computer is called the “Processor”. With the name processor, you will always hear another word – The core. A core is the single processing unit inside a processor. At a single time, a core can only handle a single task. So, the more cores you have of course the more work you can do at a time.

Clock speed is another important fact which affects the power and the speed of a computer processor. The number of cycles a processor can execute per second is defined as the clock speed of a processor. A cycle is actually a pulse synchronized by an oscillator.

The processor is the brain of a computer

How to choose a processor considering the number of cores

Earlier processors just had a single core. But, nowadays most processors at least have two core units. General use laptops usually have 2 core processors like Intel core i7 10710U and AMD’s Ryzen 5 3500U  with power-saving capabilities. These laptops are okay for general purposes but not good with multitasking.  But, special laptops like gaming laptops or workstations laptops usually have processors with a minimum of four cores. Most new desktop computer processors have four or more cores. So, if you have the question laptop or desktop go for a desktop if you want to do many tasks at once. But, if you want mobility plus multitasking capabilities go for a workstation or gaming laptop with quad core processor.

General multitasking

For general multitasking processes like video encoding, graphic designing, 3d modeling a processor with four to eight cores can perform very well. But, more demanding tasks like server management, artificial intelligence, and deep learning advanced processors with a very high number of processors are recommended.  The latest Intel’s Xenon series processors have up to 52 cores while the AMD’s epic processors have more than 128 cores in a single processor.

Integrated graphics

Some processors come with integrated graphics processing capabilities.  If you are not willing to buy a graphic processing unit (GPU) always choose a processor with internal graphics. Some processors like AMD ryzen G series processors have very good and high-end graphic processing abilities. Tyzen 5 3400g processor has a vega 11 graphic processing unit. This unit has equal performance as Nvidia GeForce GT 1030 GPU.

How clock speed affect processing power

Simply the more is better.  This means if you have a processor with a higher clock then it is faster. But, clock speed is NOT the only factor that affects the speed of a CPU. The clock speed of modern processors are measured in Gigahertz (GHz).

The ancestors of today’s processors like Intel 8080A (released in 1976)  just had a base clock speed of 5 MHz. (Megahertz) One Gigahertz is equal to thousand megahertz. So, can you imagine how slow the old processors were? We are actually living in the future. The first Intel Pentium processors just had a clock speed of 100 MHz. The first processor to reach a Gigahertz range clock speed was AMD’s Athlon which was released in the 2000s.

The modern processors like Intel Core i7-8086K (5 GHz) and AMD’s Ryzen 9 3950x (4.6 GHz) have mind-blowing base clock speeds comparing to the processors we had 10 years ago.

Add proper cooling methods before overclocking

Over clocking-ability

Overclocking is using a processor in higher clock speed than what is recommended by the manufacturer. For heavy tasks like gaming, video encoding, 3d modeling, AI, deep learning and machine learning computers need to have a higher clock speed to acquire a good processing efficiency.  So, the users can overclock the processor to acquire a high clock speed.

But, not all processors support overclocking.  All modern AMD processors like the AMD FX series, AMD  Ryzen Series, AMD Epyc Series, and AMD Threadripper series processors are unlocked and support overclocking. But, when it comes to the Intel series, only the K series processors are unlocked and capable of overclocking.

Overclocking warning

Overclocked processors consume a higher power than the recommended power. So, they generate more heat than a non overclocked processor. If you want to overclock your processor consider replacing the stock cooler with higher efficiency.  Consider buying a liquid cooler or a mineral oil dipped build to effectively remove the excessive heat generated from the CPU.

0 comment
0 Google +Pinterest
@2019 - All Right Reserved. Geekdosage.com