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@@ -81,6 +81,12 @@ but modern drives will be told to cope with underruns transparently.
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To ensure saturation, copying from a file system
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stored on local disk or memory is recommended.
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.PP
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+BD-R discs are `formatted' upon first use,
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+for sequential writing with spare sectors
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+for hardware defect management,
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+so BD drives should not report errors when writing BD-R discs;
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+any such errors may be a sign that the laser of an old drive is fading.
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+.PP
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To fixate a disc (close a recordable disc by writing
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its permanent table of contents), simply
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remove the
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@@ -195,6 +201,8 @@ option causes the time of each track to be appended to the normal output.
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is like
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.B -t
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but prints a final line with the total time.
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+.br
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+.ne 6
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.SH EXAMPLES
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Backup to a BD-R disc:
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.br
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@@ -226,6 +234,7 @@ rm /mnt/cd/wa
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.SH SOURCE
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.B /sys/src/cmd/cdfs
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.SH SEE ALSO
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+.IR pump (1),
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.IR sd (3),
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.I 9660srv
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(in
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@@ -256,8 +265,7 @@ the cross-product of these tuples:
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(-ROM -R -RW),
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(single-layer dual-layer),
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plus oddities like DVD-RAM.
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-Triple-layer BD drives and discs are starting to appear,
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-likely to be followed by quad-layer.
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+Triple- and quad-layer BD drives and discs are starting to appear.
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.PP
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Only MMC-compliant disc readers and writers
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are supported, but it would be easy to add
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