From John.Tytgat@esat.kuleuven.ac.be Fri Apr 23 14:39:41 1993 Newsgroups: comp.sys.acorn.tech From: John.Tytgat@esat.kuleuven.ac.be (John Tytgat) Subject: Re: Recover file deleted from hard Disk? Originator: tytgat@rilke Reply-To: John.Tytgat@esat.kuleuven.ac.be (John Tytgat) Organization: K.U.Leuven, Belgium Date: Thu, 22 Apr 1993 18:29:27 GMT In article <1993Apr22.164608.8577@cc.ic.ac.uk> s.budd@imperial.ac.uk (Mr S. Budd) writes: >Can anyone let me know if there is a prog/utility >which allows one to recover ( undelete) a file from >a hard disc. Running on a 410 under previous >version of Riscos. I am not aware of any program which does such a thing but maybe I can suggest a way to do it (however it could become messy and it usually involves a lot of work...). It should work with all kind of drives (adfs, scsi, idefs, etc.). - Go somewhere in command mode (shift-F12 or F12) and make your drive the current one (eg. *scsi, *dir :4). - Type *map, now you receive a list of all the free blocks of your (hard)disc and one or more of these blocks will actually contain (parts of) your file... - In your map list you always see couples of two hex numbers. The first number shows you the disc address of that free block and second one is the length of that free block. We will 'claim' these free blocks by creating new files by *beginning with the largest free block* and than progressively take the smaller ones ! So, if your map reads (the format could be slightly different) : (00a400, 400), (00c400, 800), (01e000, 800) then you type : *create 800 *create 800 *create 400 ... and so on ... - After claiming all the free blocks, your disk should full (try *free). You can now go into the desktop, load your own most favorite text editor and have a look at all those new files. One or more of them should contain (parts of) your file... As I said, it's quite messy so... anyone fancy to write a program which can deal better with this problem ? John John.Tytgat@esat.kuleuven.ac.be BASS