Drive image file (PowerQuest)
PQI is a file extension for a disk image file created by PowerQuest. PQI stands for PowerQuest disk Image. PQI files contain an exact copy of a computer hard drive, used for backup purposes. PQI files can be opened by PowerQuest's PQIBrowser, or by Norton Ghost. PowerQuest was purchased by the Symantec Corporation and rebranded as Norton Ghost.
Learn more about .PQI files:
Visit the Symantec web page.
Read the Norton Ghost FAQ at ITKnowledgeExchange.com.