Windows 10: Different speeds for two identical USB sticks

A few months ago I bought a set of 2 SanDisk Ultra 32GB USB3 sticks, one red, one blue (easier to reference that way). They're plugged in to two USB3 ports via 1 metre USB3 cables. For some reason they transfer at different speeds. The blue one transfers 35-40MB/sec, the red one at 20-25MB/sec. This is consistent and stays the same whichever way I swap cables and ports. Neither are showing any errors. The only other difference I can see is that there's a 12MB (0.04%) difference in capacity. Any idea why the transfer speed difference? (I'm sure it's not due to the different wavelength of red and blue light!)

:)

 

Installing windows off of a USB stick

Step By Step from vista:
From admin cmd prompt

1. diskpart
1a. list disk
2. select disk 1 (replace 1 with your usb drive)
3. clean
4. create partition primary
5. select partition 1 (replace 1 with your usb drive)
6. active
7. format fs=fat32
8. assign
9. exit

Copy Windows Vista's DVD ROM content to the Flash Drive

xcopy d:\*.* /s/e/f e:\ (d being your vista cd and e being your usb stick)

And that's it, boot off your usb disk

 

Windows 10 Problem with usb port and old memory stick

Hello Steve,

Thank you for posting your query on Microsoft Community.

We regret the inconvenience caused to you. We will be glad to assist you with your issue.

• Does the issue occur when u try with different USB drive?
• Did you install all the pending Windows update?

I suggest you to first try and check with different USB Memory stick and check if the same issue occurs. Also try using your current USB memory stick in different USB port and check. Also install all the pending Windows
updates and check. You can also try using the Memory stick on another system and check if its working fine.

For now, you can try updating the drivers of the Memory Stick and check if it helps:

Follow the steps to update drivers from the Device Manager:

1. Right click on
Start button, select Device Manager andEnter.

2. Find the drivers which needs to be installed and also see if there are any warning symbols. If yes update the drivers.

3. Right click on the Memory stich device and click on
Update driver.

Let us know the status of the issue. We will be glad to assist you further.

Thank you.

 

USB stick previously used as a boot stick for Killdisk not recognized

Try method 2 under Windows 7 8 10 here:
Free to Remove Readonly Attribute in Windows

Method 2: Clear readonly status with Diskpart

In Windows 10, 8, 7 OS, you are also able to run Diskpart in Command Prompt to clear read-only attribute on any partition on your computer. You can follow the tutorial below:

Step 1. Open Command Line and type Diskpart
Step 2. Type list disk
Step 3. Type select disk (disk number)
Step 4. Type attributes disk clear readonly





Then try Clean