I am running Mac OSX 10.4.9 (fully updated), using a firewire Lacie d2 DVD burner (newest tsstCORP model, with updated firmware) and have used several burning programs from, toast 6 -8 (mostly 7), Disco, Disk Utility. i am using both tayo yuden-r and verbatim media+r (both4.7gb) at 4x, 8x and 16x
All of my discs burn fine. But on verify (in toast) i get a "mismatch at byte 633/ sector xxxx. it is always byte 633, but a different sector everytime. this has happened on the last 20 discs i have burned. prior to that i had a 100% sucsess ratio.
i also use kdiff to compare originals to burns to see which ones are messed up. the strange thing is that using the same set of data, each time one or multiple files will be different, never all of the same files and always at byte 633 of a random sector no matter what app, what data or what media or what port (firewire 400, 800 or usb), what source drive, or what user account. sadly, i have only one machine to use the drive on.
i should note that the data plays but has errors.
So I, ran disk utility, fixed permissions, reset buses, ran disk warrior, ran cocktail, to no avail. after speaking with a tech at lacie (who was super nice), we determined the drive was defective. so i brought i back and got another one. i brought it home all new and shrink wrapped. i open it up, update the firmware, slap in a blank and... same thing. it wasn't the drive...
i am in a bind because i can not reformat my drives and machine until i burn some data off.
what do i do? does anybody have any suggestions? any further courses of action i can take? help!