Re: plextor px-708uf: cannot get disk type
> Version with dinfo[32+4]
> ==============
> [magliery@reganlinux dvd+rw-tools-5.16.4.8.5]$ ./test /dev/scd0
> :-( unable to READ DISK INFORMATION: Input/output error
> ==============
The above program uses READ DISK INFORMATION with length parameter used
by cdrecord.
> Version with dinfo[32]
> ==============
> [magliery@reganlinux dvd+rw-tools-5.16.4.8.5]$ ./test2 /dev/scd0
> 00 22 00 01 01 01 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 23 05 40
> 00 00 00 00 00 00 00 00
> ==============
And this one uses READ DISK INFORMATION with length parameter used by
growisofs.
> What does *this* mean?
This means that there is no further need for me to assure that growisofs
works not because it ignores errors [as Joerg implies], but because it
does things differently.
To wrap up. My initial assumption that it was hardly a firmware
deficiency was wrong. It is a firmware bug: unit apparently sends less
information than promised (the second number in above printout should be
0x20(*) and 0x20 is the number which I observed uncounted number of
times in different units). Could Linux USB implementation have managed
it with more grace? I'm not really in position to judge, but maybe.
(*) You should be able to verify it by declaring dinfo[32+2] in
previously posted snippet.
Oh! From your prompt one can assume that you use 5.16.x. Note that
5.17.x is strongly recommended update for those who use 5.14 through
5.16. Cheers. A.
Reply to: