s851736@yabbie.rmit.oz (Robert Krohn) (10/06/88)
Is it possible to fool the mac in thinking a 400k disk is an 800k one ? Im trying to recover data from an 800k disk mistakanly initialised to 400k (old 512 machine with the great line Do you want to initialise ? (or eject)) So Im hoping that data is still on the other side, but symantec tools wont scan that side because it thinks it's a 400k. Any other suggestions wellcomed ! Thanks in advance, Rob. ============================================================================= = = = Robert Krohn RMIT Comm & Elec Eng, Melbourne, Australia. = = = = ACSnet: s851736@yabbie UUCP: ...!uunet!munnari!yabbie.rmit.oz!s851736 = = CSNET: s851736@yabbie.rmit.oz ARPA: s851736@yabbie.rmit.oz@uunet.uu.net = = BITNET: s851736@yabbie.rmit.oz@CSNET-RELAY = = = = 'My God, it's Full of Stars' = = = =============================================================================
jlc@goanna.oz (Jacob L. Cybulski) (10/06/88)
In article <880@yabbie.rmit.oz>, s851736@yabbie.rmit.oz (Robert Krohn) writes: > Is it possible to fool the mac in thinking a 400k disk is an 800k one ? > > Im trying to recover data from an 800k disk mistakanly initialised to 400k > (old 512 machine with the great line Do you want to initialise ? (or eject)) > So Im hoping that data is still on the other side, but symantec tools wont > scan that side because it thinks it's a 400k. I think that the sequence of 800K disk tracks alternate between sides to reduce the head movements during I/O. This means that when you formatted your disk as 400K you've lost every second track of your disk, you know the implications of that... the disk map points in all directions and each of your files has been shattered to zillions of pieces skattered all over the disk of which every second track has been wiped out. Hmmm... it is a sad story. Jacob