I don't believe you can recover a file from a USB drive if you don't have the USB drive.
I keep backups of the files.
You should be able to save any file onto a USB flash drive provided the drive is working and there is adequate space on the drive for the file.
If the pen drive is a standard USB drive then think about upgrading to a USB 2.0 drive, your computer must have a USB 2.0 port as well. USB 2.0 will transfer data much quicker than standard USB. Another option is to use a file compressing software to make the file smaller that you are transferring to the Pen drive. Smaller file, less to move. www.winzip.com
The USB drive is not mounted properly.
The way you can recover lost data on an USB is: start to delete the files, and than use a file recovering program. A lot of programs has recovery files
Well you could possibly right click the file and save as, then navigate to your usb drive and it should download there
To copy your favorites file to a USB drive, first, insert the USB drive into your computer. Open your web browser and locate your favorites or bookmarks folder, typically found in the browser's settings or menu. Select the favorites you want to copy, right-click, and choose "Copy." Then, navigate to the USB drive in File Explorer or Finder, right-click in the desired location, and select "Paste" to transfer the files.
A USB can store anything that can be represented by a computer file, so yes.
To create an image file from a CD to a USB drive, first insert the CD into your computer. Use disk imaging software like ImgBurn, WinISO, or Disk Utility (on macOS) to create an ISO file from the CD. Once the ISO file is created, plug in your USB drive and use the same software or a tool like Rufus to write the ISO file to the USB, effectively transferring the image of the CD to the USB drive. Make sure to back up any important data on the USB, as this process may erase its contents.
In order to transfer a movie from a PC to a USB flash drive, you will need to attach the USB drive to your computer. Once you find the movie file on your PC, you will need to select the file and either paste or drag it to the USB drive.
Format the drive
Just connect the device on the USB port and right click on the file to be sent and select the usb location.
Files that are larger than the USB Capacity. Example: 2.3GB file on a 1GB Flash Drive cannot be copied/saved on the USB