Difference between UEFI and Legacy Mode which we need to choose while installing the OS?

Difference between UEFI and Legacy Mode which we need to choose while installing the OS?

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 UEFI:- This provides  fast -booting :- as you might have observed in Windows 8/8.1, Win10 also.

Firmware :- This is a piece of software that acts as an interface between the hardware(motherboard) and the Operating System. 

Legacy Mode :- refers to BIOS firmware. Basic Input/Output System(BIOS) was the first popular firmware for desktop PC introduced in 1975 by IBM for its CP/M OS. Even though it is still widely present, computers have evolved tremendously and BIOS is unable to provide advanced features of modern hardware. 

Legacy Boot is the boot process used by BIOS firmware. The firmware  maintains a list of installed storage devices that may be bootable  (Floppy Disk Drives, Hard Disk Drives, Optical Disk Drives, Tape Drives,  etc...) and enumerates them in a configurable order of priority. One  the POST procedure has completed, the firmware loads the first sector of  each of the storage targets into memory and scans it for a valid Master  Boot Record (MBR). If a valid MBR is found, the firmware passes  execution to the boot loader code found in the MBR which allows the user  to select a partition to boot from. If one is not found, it proceeds to  the next device in the boot order. If no MBR is found at all, the user  is presented with the famous "Please insert system disk



 

Unified Extensible Firmware Interface(UEFI):-  is the successor to BIOS. UEFI uses the GUID Partition Table (GPT) whereas BIOS uses the Master Boot Record(MBR) partitioning scheme. GPT and MBR are both formats specifying physical partitioning information on the hard disk.

UEFI boot is the boot process used by UEFI firmware. The firmware  maintains a list of valid boot volumes called EFI Service Partitions.  During the POST procedure the UEFI firmware scans all of the bootable  storage devices that are connected to the system for a valid GUID  Partition Table (GPT). Unlike a MBR, a GPT does not contain a boot  loader. The firmware itself scans the GPTs to find an EFI Service  Partition to boot from. If no EFI bootable partition is found, the  firmware can fall back on the Legacy Boot method. If both UEFI boot and  Legacy boot fail, the famous "Please insert system disk ???????" will be presented.


 Some differences are written below :-

1. Max partition size in MBR is ~2TB whereas in UEFI it is ~9 ZetaBytes
2. MBR can have at max 4 primary partition whereas GPT can have 128.
3. MBR can store only one bootloader whereas GPT has a separate dedicated EFI System Partition(ESP) for storing multiple boot loaders. This is very helpful if you have two or more operating systems which require different boot loaders.
4. UEFI offers secure boot which can prevent boot-time viruses from loading.

 

How to Reset Your Forgotten Password in Windows 10 !

How to Reset Your Forgotten Password in Windows 10 !

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If you forgot the password for your Microsoft account and you were unable to reset the password with Microsoft’s online recovery methods, the best way is to create a new local account so you can sign in again to your Windows 10 computer. This method will also allow you to access all of your Microsoft account’s local files.

See the password is incorrect .

Here are the steps to reset a Windows 10 password:

1:- Firstly Boot from your windows 10 DVD or either in recovery mode if u have HP products .
Make sure that your PC setup is configured to boot from a DVD and that UEFI and Secure Boot are disabled.

Booted from Windows 10 DVD

 2:- Now Press SHIFT + F10 to open a command prompt.

Command prompt after pressing Shift+f10

3:- No type a command to replace the file utilman.exe with cmd.exe. Before you do this, you should make a copy of utilman.exe so that you can restore it later. Note that you can only restore this file if you boot again from the Windows DVD.

A:- move c:\windows\system32\utilman.exe c:\windows\system32\utilman.exe.bak

B:- copy c:\windows\system32\cmd.exe c:\windows\system32\utilman.exe

Backup and replace utilman.exe with cmd.exe

 

 4:- After replacing utilman.exe just reboot your system with this command wpeutil reboot or reboot it directly (directly rebooting may cause some error 1%)

 

Rboot windows 10 

 5:- On the Windows 10 sign-in page, click the Utility Manager icon.

Click on utility manage in red arrow key

See we had replaced utility manager with cmd.exe now it will open command prompt instead of utility manager .

Command prompt open instead of utility manager .

 6:- Now just enable Administrator account and reset it password with below command .

A:- net user administrator /active:yes ( To enable Administrator account ).

B:- net user administrator *  (To change administrator password )

Type new password for administrator account

  7:- Now see Administrator password is activated .Now you can do what ever you want ( Save data , create new user account , change existing user account or what ever you want to do < Now you are on admin account > )

 

Administrator Account on login screen

  8:-You can now access the files associated with your Microsoft account in the C:\Users folder.

Accessing user account .

 

  9:- If you worked with a local account instead of a Microsoft account, you can reset your password in Computer Management. Right-click the Start button, select Computer Management, and navigate to Local Users and Groups. Right-click your local account and select Set Password.

  10 :- This will reset other account password also except online account (if you have online account first copy your data from that account and delete that account create new one )..

Thank you