We do not suggest PNY flash USB as bootable of Windows system or some device that can run an OS from.
Reminders, PNY is not responsible for any damage or failure of any third party equipment that used with PNY products.

You may try upgrade the Duo Link drive firmware, that to download from the PNY support page and follow the below steps.

1. Download and extract the compressed zip file. (unzip password : pny)
2. Right click the update tool, choose run as administrator
3. Plug DUO-LINK drive into any USB Port
4. Click update F/W when it shows Ready
5. It will show “Update complete” when done. (Do not remove the drive when in process)
6. Unplug the drive.

Note: It takes around 15-30 seconds to complete the update process. Firmware Update will only work on Windows OS.

You could download the repair tools from support page of PNY Asia website. Try to format it on your computer and follow the below steps.

1. Download and extract the compressed zip file
2. Plug USB drive into any USB port
3. Run the UFIX tools
4. Click Format or Start bottom when it detected the USB drive
5. It will show Complete or OK when done
6. Unplug the USB drive

Note: The tool will format and delete ALL data of the flash drive. PNY is NOT liable for data loss in connection with the product, regardless of the cause.

You can follow steps here

1. Right click to open the Start menu on your computer, select Device manager .
2. On the device manager, find your USB drive under the disk drives heading. Right-click the drive and select properties.
3. Select policies page, select the optimize for performance / better performance, click OK.
4. Open my computer, select format on the flash drive.
5. Choose NTFS in the file system drop-down box
6. Click the start button and wait until finished.

Windows operating system has a built-in limitation of the file size. So, if the USB file system is NTFS that could copy to one file be as large as 16TB. the FAT32 file system has a maximum one file size of 4GB. And the FAT16 file system has a maximum one file size of 2GB.

If you need to copy one file that size more them the built-in limitation. You may to choose to change the file system of the USB, and reformatting it

If the USB work normal on other other computer or laptop, and you are use windows OS. You may try to follow steps here:

• select start, then type device manager in the search box, and then select device manager.
• expand universal serial bus controllers. Right-click the USB device and select "uninstall".
• Once complete, restart your computer.

If your problem still exists, proceed the follows (Install the latest windows updates)

• Select the "start" button, open the "device manager" again.
• expand universal serial bus controllers. Right-click the USB device and select "windows update".
• Once complete, restart your computer.

You could download the online UFIX tools from PNY support page to re-initialize your USB product. But those way will be delete all data of the USB. PNY is NOT liable for data loss in connection with the product, regardless of the cause. PNY is NOT liable for any data loss of USB flash Drives.
 

You need to confirm the USB HUB power whether it is enough. The USB 2.0 power output standard 5V/500mA ; The USB 3.0 power output standard is 5V/900mA. If the USB HUB power is not enough. it's possible caused USB can't working normal. And if the USB 3.0 is connected to the devices via the USB HUB 2.0, the USB speed only USB 2.0 standard.

If the USB 3.0 is connected to the devices via the USB 2.0 port, the USB speed only USB 2.0 standard.

PNY recommend not partition USB drive.

The discrepancy results from the different ways flash memory and hard drive manufacturers calculate megabyte. It's binary calculation is 1,024KB. Also it will take some capacity for the file management system, system files, firmware and data storage and maintenance. So the available capacity is smaller than the announced density on the product's package.