Disk image created by Active@ Disk Image, a backup and recovery program; may contain a backup of a hard drive, media disc, or other external storage device; can be part of a split archive or a full backup.
ADI files can be used for full system backups and restores, as well as partial file system backups. They only store the occupied sectors of a disk and use compression, which helps to reduce the size of the backup.
Active@ Disk Image names split archives using the backup name followed by the number in the sequence. For example, a two-file split archive for "MyBackup" would have the files MyBackup1.adi and MyBackup2.adi.
Monochrome image generated by AutoCAD, a CAD application used to create 2D and 3D designs; contains a black and white graphic that has been plotted from a vector-based drawing; used for storing plotted design drafts.