The reliable way to check whether a USB stick is bootable is to start the computer from it and see whether it opens the intended installer, recovery tool, diagnostic program, or live operating system. A drive appearing in File Explorer or a partition list does not prove it can boot—and a successful test on one computer does not guarantee it will work on another.
Test the USB stick on the computer where you need it
- Identify the expected result. Know whether the stick should start an operating-system installer, a live operating system, recovery media, or a diagnostic environment. This gives you a clear way to recognize a successful boot.
- Insert the stick and restart the target computer. Open its one-time boot menu using the key or method documented for that manufacturer and model. There is no universal boot-menu key; Microsoft advises checking with the PC manufacturer if you do not know it (Microsoft’s USB boot instructions; ASUS boot options guidance).
- Select the USB entry. If the menu shows both a plain USB entry and one prefixed with
UEFI:, they may start the same stick in different firmware modes. Choose the mode supported by both the computer and the media. Microsoft explains the distinction between UEFI and legacy BIOS boot modes in its boot-mode guidance. - Check what appears. If the expected environment opens, the stick has booted successfully on this computer using the selected mode and settings. Microsoft’s Windows PE instructions similarly direct users to select the bootable media from the boot menu (WinPE: Create bootable media).
If the computer reports that no boot device is available or returns to its internal drive, the test has not succeeded. That result alone does not prove the stick is defective.
As an Amazon Associate I earn from qualifying purchases.
What the test proves—and what it does not
A successful boot confirms that the particular stick can start the observed environment on the tested computer, with the selected firmware mode and settings. It does not show that the media will work on every computer, with another mode or Secure Boot configuration, or after the stick has been changed.
Crashes, No Sound, or Screen Glitches?
Random freezes, missing sound and display glitches usually trace back to one bad driver. Find and replace yours safely.Free scan · under a minutePC Slower Than It Used to Be?
A free scan shows the junk files, broken settings and background clutter dragging Windows down - then fixes them in one click.Free scan · Windows 10 & 11A failed attempt is also not conclusive proof of physical failure. The computer may have USB boot disabled, the media may not support the selected firmware mode, or the image may have been written incorrectly. A normal file listing in Windows, macOS, or a partition utility is not a universal bootability test: boot media can use layouts or filesystems that are not presented as ordinary data volumes.
#1 Best Overall
- USB-C 2-in-1 storage OTG: The Lexar JumpDrive Dual Drive D40E features USB Type-A and Type-C connectors in a slim, portable form factor for easy device compatibility
- Transfer speeds up to 100MB/s: Based on internal testing, performance may vary depending upon the host device, interface, and usage conditions. 1MB=1,000,000 bytes
- Plug and Play: Widely compatible with USB Type-C smartphones, tablets, laptops, Macs, and traditional Type-A devices, no software installation required. The 360° swivel design allows for easy switching between connectors without the hassle of losing a cap
- Durable & Compact: The Lexar D40E USB memory stick features a metal enclosure, withstands temperatures from 0° to 50° C (32°F to 122°F), and is lightweight at 26g with dimensions of 70.4 x 16.9 x 11.7mm
- Security & Warranty: Securely protects files using an advanced security software solution with 256-bit AES encryption. Backed by a Lexar 3-year limited warranty
If the USB does not appear in the boot menu
- Check firmware settings. Confirm that the computer supports USB boot and that it is enabled. The location and names of these options vary by device; see the manufacturer’s instructions, such as ASUS’s boot-options guide.
- Match the firmware mode. Check whether the media was prepared for UEFI, legacy BIOS, or both. If the menu provides separate entries for the stick, try the supported mode that matches the media (Microsoft’s UEFI and BIOS explanation).
- Use a documented UEFI fallback where applicable. For supported UEFI systems running Windows PE media, Microsoft documents manually selecting
EFIBOOTBOOTX64.EFIif the media does not appear in the boot menu (WinPE boot instructions). - Verify how the image was written. Make sure the writing process completed and that you selected the USB stick—not another disk. Ubuntu’s instructions cover creating installation media and warn users to select the correct device (Create a bootable USB stick).
If the USB appears but will not start
- Try another listed mode only when it is supported. A UEFI or legacy BIOS entry is a compatibility option, not a general quality setting. The media and computer must support the mode you choose (Microsoft’s boot-mode guidance).
- Check the operating system’s Secure Boot instructions. Do not assume Secure Boot must always be disabled. Microsoft’s direction to disable it applies to its specific Factory OS workflow, which also specifies UEFI and, when using the default device layout, a USB 3.0 stick with at least 32 GB (Microsoft Factory OS instructions). Those requirements are not a general minimum for bootable USB drives.
- Use creation settings for the specific image. For Ubuntu media created with Rufus, Ubuntu’s version 24.04 documentation suggests trying GPT and
UEFI (non CSM)if the stick fails to boot. This is a targeted suggestion, not a universal setting for other images or computers (Ubuntu 24.04 bootable USB instructions). - Check processor architecture and platform support. Media intended for one hardware architecture may not boot on another. Ubuntu documents a different support path for Apple Silicon Macs than for Intel Macs and PC hardware (Ubuntu’s USB creation guidance).
When to recreate the boot media
If the settings and compatibility checks do not resolve the problem, recreate the stick using the current instructions for the operating system or tool you need. Ubuntu documents image writing with GNOME Disks and other methods (Ubuntu’s creation guide); Rufus describes creating bootable flash drives from bootable ISO images (Rufus). A creation tool can write media, but using it does not establish that the resulting stick will boot every target computer. Take care to select the USB device because writing an image can overwrite the selected disk.
Replace the stick only if it is damaged, unreliable, unavailable, or unsuitable for the particular image. Capacity and interface needs depend on the workflow: the 32 GB requirement cited above belongs to Microsoft Factory OS’s default layout, not to bootable USB media in general.
Rank #2
- High-speed USB 3.0 performance of up to 150MB/s(1) [(1) Write to drive up to 15x faster than standard USB 2.0 drives (4MB/s); varies by drive capacity. Up to 150MB/s read speed. USB 3.0 port required. Based on internal testing; performance may be lower depending on host device, usage conditions, and other factors; 1MB=1,000,000 bytes]
- Transfer a full-length movie in less than 30 seconds(2) [(2) Based on 1.2GB MPEG-4 video transfer with USB 3.0 host device. Results may vary based on host device, file attributes and other factors]
- Transfer to drive up to 15 times faster than standard USB 2.0 drives(1)
- Sleek, durable metal casing
- Easy-to-use password protection for your private files(3) [(3)Password protection uses 128-bit AES encryption and is supported by Windows 7, Windows 8, Windows 10, and Mac OS X v10.9 plus; Software download required for Mac, visit the SanDisk SecureAccess support page]
How to interpret two different boot attempts
If a stick works on one machine but not another, compare the conditions rather than assuming either result is wrong:
- Was each computer set to boot in UEFI or legacy BIOS mode, and does the media support that mode?
- Does each computer allow USB boot, and are its Secure Boot settings compatible with the intended media?
- Are both computers compatible with the media’s processor architecture?
- Was the expected installer, live system, recovery tool, or diagnostic image written correctly to the stick?
- Does the specific operating-system workflow require a particular capacity or USB interface?
Bootability is therefore specific to the combination of media, target computer, firmware mode, and settings—not a permanent property that a file or partition listing can confirm.
Quick Recap
Best Value
- 【16GB Flash Drive】USB flash drives with 16GB capacity, meet your needs of daily use on work, school, home and travelling for photos, music, videos, files storage and transfer. IMEASON thumb drives can be used to store different files, easy to data backup.
- 【Metal Swivel Cap Design】USB thumb drive is metal swivel cover provides extra protection for the usb thumbdrive connector, no usb drive cap to lose; keychain design makes it easier to carry without worrying lose it.
- 【Wide Compatibility】USB drive supports Windows 7/8/10/11 / Vista / XP / Unix / 2000 / ME / NT Linux and Mac OS, also Supports USB 2.0 and 1.1 ports. USB Stick support TV, desktop, notebook computer, car, audio and other device. The USB Memory Stick is your great data storage and transfer companion with traveling and working.
- 【Easy to use】usb memory stick is plug and play without any software installation. Just simply plug the Flashdrive into the port of your USB-compatible devices such as computer, laptop to start data storage or transmission.
- 【What You Get】16 GB USB Flash Drive Thumb Drive, The default format of the usb storage flash drive is FAT32.
Rank #4
- GOOD VALUE PACKAGE - 1 Pack 32GB Memory Stick USB 2.0 Flash Drives with great cost performance and high quality.
- BIG CAPACITY - The available capacity: 29.10GB-29.8GB, You can save the data of movies, music, photos, designs, programs, manuals, handouts in a high speed.Good performance in digital data storing, transferring and sharing with families, friends, workmates, clients and machines.
- EASY TO USE & PLUG AND WORK - Support windows 7 / 8 / 10 / Vista / XP / 2000 / ME / NT Linux and Mac OS, Compatible with USB2.0 and below.
- TWISTTURN DESIGN & EASY CARRY - The metal clip rotates 360° round the ABS plastic body which with rubber oil skin feeling finish. The capless design can avoid lossing of cap, and providing efficient protection to the USB port.
- WARRANTY & SUPPORT - SIMMAX logo is laser printed on the USB connector surface, our products are of good quality and we promise that any problem about the product within one year since you buy.
Rank #3
- What You Get - 2 pack 64GB genuine USB 2.0 flash drives, 12-month warranty and lifetime friendly customer service
- Great for All Ages and Purposes – the thumb drives are suitable for storing digital data for school, business or daily usage. Apply to data storage of music, photos, movies and other files
- Easy to Use - Plug and play USB memory stick, no need to install any software. Support Windows 7 / 8 / 10 / Vista / XP / Unix / 2000 / ME / NT Linux and Mac OS, compatible with USB 2.0 and 1.1 ports
- Convenient Design - 360°metal swivel cap with matt surface and ring designed zip drive can protect USB connector, avoid to leave your fingerprint and easily attach to your key chain to avoid from losing and for easy carrying
- Brand Yourself - Brand the flash drive with your company's name and provide company's overview, policies, etc. to the newly joined employees or your customers
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
