The key to making a bootable USB drive is to select the right image file, use reliable tools, and set up the BIOS correctly. 1. Prepare a legal system image (such as Windows or Ubuntu official ISO) to ensure source security and version adaptation; 2. Select appropriate tools (such as Rufus, Ventoy, UNetbootin or official tools), pay attention to selecting the correct ISO file and target USB drive; 3. Enter the BIOS/UEFI settings, adjust the startup sequence, and set the USB device to the first boot item, and switch to Legacy/UEFI mode if necessary. Each step needs to be carefully checked to avoid misoperation resulting in data loss or startup failure.
It is actually not difficult to make a bootable USB drive. As long as the steps and tools are right, there will basically be no problems. The key is to select the right image file, use reliable production tools, and ensure the settings are correct.

Prepare the system image file
Before you start, you have to have a legitimate operating system image file (ISO file). For example, the official ISO of Windows or the mirror of Linux distributions such as Ubuntu.
To confirm that the source is reliable, it is recommended to download it from the official website to avoid downloading the tampered mirror that causes installation failure or security issues.
In addition, different versions of system images are suitable for different devices and uses, such as the difference between 32-bit and 64-bit, long-term support version (LTS), etc. You must see your needs clearly when choosing.

Choose the right tool
Currently there are several commonly used tools that can help you turn an ordinary USB drive into a bootable disk:
- Rufus : The most commonly used free tool under Windows, with a simple interface and intuitive operation.
- Ventoy : If you need multiple system images to coexist on one USB drive, Ventoy is a good choice.
- UNetbootin : Suitable for Linux users and also supports some Windows images.
- Official tools : such as Microsoft's Media Creation Tool, designed for creating Windows installation disks.
When using these tools, be careful to select the correct ISO file and target USB disk. Don't mess with the drive letters, otherwise other disks may be formatted incorrectly.

Set the BIOS/UEFI startup sequence
After the production is complete, insert the target computer and try to boot from the USB drive. At this time, you may need to enter the BIOS or UEFI to adjust the startup sequence:
- Press the specified key when powering on (usually F2, F12, Del or Esc, depending on the brand)
- Find the "Boot" or "Start" option
- Move the USB device to the first position in the boot sequence
- Save and exit, the computer will automatically boot from the USB drive
Some new computers are in UEFI mode by default, while older systems may need to switch to Legacy mode to recognize. If it cannot be started, you can try to switch between these two modes.
Basically that's it. The whole process is not complicated, but every step needs to be carefully checked, especially when selecting disks and mirror files, it is easy to rewrite the wrong data if you are not careful. As long as you operate carefully, the success rate is very high.
The above is the detailed content of How to create a bootable USB drive. For more information, please follow other related articles on the PHP Chinese website!

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