boot usb

[synpc]

hi gurus

A)

i would like to make bootable usb win 7 x64 pro REPAIR; 

laptop does not come with optical drive;

B)

i DO have a windows to go workspace usb3 hard drive from another laptop (win 7 x64 home prem); 

MBR, NTFS, single partition;

works when run on win8 x64 pro; works when run on Vista x86 ult;

does NOT work (unable to boot) on elitebook 840 G2 win 7 x64 pro;

thnx in adv

spc

[A4Apollo · Accepted solution]

@synpc

Hey there!

                     Thank you for visiting the HP Forums! A great place where you can find solutions for your issues with help from the community!

I understand that you are unable to boot from USB.

Try few steps recommended below.

A. Click start in the search box type CMD.

Right-click Command Prompt and select Run as administrator

Run diskpart utility by typing diskpart into command prompt window and pressing “Enter”.

Locate your USB drive disk number by typing list disk. We'll assume the USB drive is 1.

Run the following commands:

select disk 1

clean

create partition primary

select partition 1

active

format fs=NTFS

assign

exit

Now we have prepared USB drive. Let's make it bootable:

Insert Windows 7, 32/64-bit installation disk into DVD drive. Let's assume it's D

Go to D:\boot (cd d:\boot)

If your USB drive letter is “e” please run bootsect /nt60 e:

Copy DVD Windows 7 media content to USB root folder (etc. don't put it into any folder)

You are now ready to install Windows 7 from USB flash drive!

B. You told you are unable to boot from a flash drive on 840 G2.

Turn on your computer, Keep tapping F10 key.

You will boot into BIOS change the boot option from legacy to secure boot.

Save the changes and exit from BIOS.

You should be able to boot from the flash drive now.

Let me know how it goes!

Have a great day!