The Korean text inside the red rectangle on the screen above is not displaying properly.
Additionally, as shown in the screen below, when the folder name is in Korean, only rectangle shapes are displayed and the Korean text is not displaying properly.
Welcome CheolsooKim, I understand BU is not displaying Korean language correctly. Thank you for your screenshot. Please uninstall BU, and reinstall it. If it is still there, please create a new Windows user, and see if the problem is still in BU. You could check to see if the WinPE USB version has the same problem. That will isolate whether the problem is in BU, or Windows.
Comments
Keeps license activated when updating Pro version
https://www.ubackup.com/changelog.html
Uninstall application to get 50% off Paid Version
https://www.aomeitech.com/download.html
Add custom drivers, such as NVMe, if necessary. Does not work with some monitors.
https://www.ubackup.com/help/create-bootable-disk.html