Path: utzoo!utgpu!water!watmath!clyde!att!pacbell!ames!think!bloom-beacon!mit-eddie!bbn!rochester!cornell!batcomputer!itsgw!steinmetz!uunet!mcl!unibase!leigh From: leigh@unibase.UUCP (Leigh Calnek) Newsgroups: comp.sys.apple Subject: recovering lost programs under DOS 3.3 Message-ID: <87@unibase.UUCP> Date: 21 Jun 88 19:39:57 GMT Organization: EMIS Consulting, Regina, Saskatchewan, Canada Lines: 28 trying to make it so my students could not copy it, I added a "new" statement at the end of the program. I then proceded to test the program, and sure enough, it worked, the program was cleared from memory. Then, without thinking, I saved it! You guessed it, I overwrote the existing program with the null program. Looking at the directory of the disk, I note that it still occupies 44 blocks, however if I try to load it I get what I saved, nothing. The above scenario was described to me by a friend who knows better but did it anyway. If he were working with MSDOS I would know what I could do however I am not very familiar with Appledos. Does anyone know of a utility for DOS 3.3 that will let you work at the byte level on an apple diskette and fiddle with the binary data in the file? Is it possible to recover all but the first block of the lost program, or is it gone for all times? Any suggestions would be appreciated. ------------------------ uunet!mcl!unibase!leigh Leigh Calnek Co-ordinator, Education Technology 3002 Harding St. Saskatchewan Education Regina, Sask. Canada 2220 College Ave. S4V 0Y4 Regina, Saskatchewan, Canada phone: home (306)789-9007 S4P 3V7 bus. (306)787-9448