Dumping PC DD/HD Disks

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IFW
Posts: 3079
Joined: Mon Nov 08, 2010 2:42 pm

Re: Dumping PC DD/HD Disks

Post by IFW »

...and just in case you are not using the latest installation, please check www.kryoflux.com

hydr0x
Posts: 104
Joined: Wed Dec 29, 2010 4:01 pm

Re: Dumping PC DD/HD Disks

Post by hydr0x »

Thanks mr. vince :)

@IFW
Oh come on. I did read the manual (latest version too) and this information is not there. All the passages about guide formats are very vague and never clearly distinguish between using the two different stream options. If you think otherwise, please quote the passages in the manual you refer too. I don't have a problem with being told to RTFM, but at least make sure the manual actually does indeed explain the question before telling me so.

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mr.vince
Posts: 2127
Joined: Tue Oct 05, 2010 5:48 pm

Re: Dumping PC DD/HD Disks

Post by mr.vince »

Jan, relax! :)

From the RELEASE.TXT (which has all changes listed):
- behaviour of stream files has been changed. There are two types of
stream files can be selected:

-i0 stream files, preservation
-i0a stream files, format guided

The format guided stream files behave exactly the same way as stream
files used to be: they always require at least one additional image type
defined as a "guide format" telling what and how to sample from the
disk. The stream files in this case just record what was being selected
by the other, guide formats.

Stream files in preservation mode behave as any other "real" image type
selected; additional -i2 or other image types just to enforce
preservation settings is no longer required. Adding -i2 should still
work to keep compatibility with tools, scripts etc, just it's no longer
useful. e.g. sampling a disk blindly with preservation settings, using
dtc -f<streamname> -i0 is now possible. It is of course still useful to
define real guide formats as usual, so errors could be detected etc. It
is also possible to restrict the stream files recorded to specific
sides, using the -g parameter and specific tracks using the -k
paramater, setting those before the -i0 as usual.

e.g.
-g0 -k2 -i0
every second track from side 0 only.

Note, that additional image types may add more tracks to the selected
ones, as stream files always record any of the tracks that had to be
sampled for any of the image types specified. The default selection of
-i0 is to sample all tracks possible from both sides of the disk. It is
highly recommended not to change that, unless e.g. the drive is
incapable of reading side 1.

The selection of stream files in preservation mode always ensures the
usage of preservation parameters, but as per above, the tracks recorded
may get overriden. Notice, the user selection is the absolute minimum
set of tracks that DTC would record; further formats can grow this set.
The band analyser output is also slightly different if there is no guide
format defined; a base is not available, as there is no other format
defined to match the possible base bands against. However the recorded
bands found by the analyser are still displayed as usual.

When stream files in presevation mode are used as an input device (not
the KF hardware) the behaviour of the stream files slightly changes. If
there is any guide format specified, the stream type does not set
preservation settings; this way only tracks accessed by guide formats
will have any output and usage as it would be expected by the user. If
there is no guide format specified, all sides and tracks will be used
according to the user defined or default settings of the preservation
mode. This is useful to see the bands recorded from image files, without
the need to define any guide format.

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