LevelOne NVR-0104 - Manual (Page 77)

NVR-0104 User Manual 77
Disk Setup
Once you install a hard disk to the recorder, you would need to
initialize it so that it can be ready for recording. You can obtain basic
information about the disk you installed in this page.
To initialize it, simply click the “Format” button.
*The USB HDDs will only be listed in the "USB Backup" and "Hard Disk
Status pages in "System Options". The USB HDDs have to be
formatted in advance in FAT16/FAT32 or EXT3 file system. (FAT32 is
recommended)