Some clarifications in wiki/QemuXorriso
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@ -402,7 +402,7 @@ DVD+R, and CD-R. But you would waste two media by this.
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The first session on CD will always be written with write type SAO,
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further sessions will be written with TAO.
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All four media types have a simulation mode. It can be enabled by xorriso
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CD-R and DVD-R have a simulation mode. It can be enabled by xorriso
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command -dummy "on", but of course it will not produce readable results.
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So this simulation is usable only for first sessions on blank media.
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@ -416,21 +416,19 @@ multi-session usage model, under the assumption that all emulated
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sessions contain ISO 9660 filesystem images, which successively
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build on each other.
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So from the view of xorriso commands, there is only the task of
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getting those media formatted, which makes them differ from the
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sequential media mentioned above.
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So from the view of xorriso commands, the only task which makes
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them differ from sequential media. is to apply optional formatting
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to DVD-RW or BD-R.
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A special case are BD-R, which xorriso may format but will not bring
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into (pseudo-) overwritable state. Formatted BD-R perform Defect
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Management by default, which checkread during writing and replaces
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Management by default, which checkreads during writing and replaces
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bad block. Nice idea in theory. My practical experience is not so good.
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Ill media stay ill media and should be replaced as soon as possible.
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Formatting of unused DVD+RW and BD-RE is done by xorriso automatically.
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Just start a normal write run. DVD-RAM are sold formatted.
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De-formatting is only possible with DVD-RW.
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xorriso treats overwritable media with a valid ISO 9660 filesystem as
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appendable media. To make then writable from scratch, apply
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-blank "as_needed", which will actually write a few bytes into the PVD
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@ -439,6 +437,8 @@ appendable media. To make then writable from scratch, apply
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There is no way to close formatted media. The command -close "on"
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gets silently ignored.
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De-formatting is possible with DVD-RW by -blank "deformat".
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-----------------------------------------------------------------------------
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Format DVD-RW for overwriting without intermediate blanking,
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