When making a USB system disk, everyone usually thinks of using the ultraISO software. This software is a powerful, convenient and practical tool for creating, editing, and converting CD image files. I don’t know if you have ever encountered that when using ultraISO to create a USB system disk, it always shows that the device is busy. Why is this? How should we solve it? Below we will give the answer step by step. The editor brings you carefully selected content. I hope you will support and share it more. If you like it, hurry up and get it!
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When this happens, it is generally because it can be solved by following the following steps:

The first one: Check whether all computer anti-virus programs have been exited?

Solution: Sometimes, the anti-virus software will prompt a similar situation because the anti-virus software has not exited.

Second: Have some files in the USB disk been opened? For example, some documents are being opened.

Solution: It is recommended to restart the computer directly first. If possible, it is best to format the U disk directly.

The third type: If your problem still cannot be solved.

Solution: If you are making a U disk system, although the ultraiso tool is very easy to use, we can try to change the production tool. Nowadays, many software for making U disk systems, such as U Hero, Dabaicai, etc., can be directly followed by the next step. It's straightforward, and the tools aren't bulky. The chance of error is almost zero.

Follow the above 3 steps step by step, I believe you will be able to solve your problem. When making a USB system disk, the device is busy. From the literal meaning, we can understand that there must be other programs or applications occupying your software or system. Therefore, finding the occupying program and closing it can solve the problem. If you cannot find it, , we can choose the third method. I believe that if you can use ultraISO, you will find it easier to use other tools.