From: Farley Flud <ff@linux.rocks>
Subject: Re: It's Burning Time Again
Newsgroups: comp.os.linux.advocacy
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Date: Sat, 16 Nov 2024 14:08:28 +0000
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On Sat, 16 Nov 2024 11:56:05 -0000 (UTC), Ralf Schneider wrote:

>> 
>> growisofs -dvd-compat -speed=2 -udf -iso-level 3 -Z /dev/sr0 -J -r
>> -graft-points /<cd drive dir>/=/<local dir>/ ...
> Thank you, but it is incomplete as we can see by the "...". I would like 
> to read it all. Can you supplement ?
> 

The "..." indicates that the last portion, the "/<cd drive dir>/=/<local dir>/,"
can be repeated to map several directories:

/<cd drive dir1>/=/<local dir1>/ /<cd drive dir2>/=/<local dir2>/ ...

But there is a limit to how many directories can be mapped.
If too many are specified an error message may appear:

"warning - too many dirs - growisofs is not tar."

Note that this is not the only burning command possible.  I use
it because it allows a direct burning of directories from HDD/SDD
to the BDR.

Another command sequence that allows burning arbitrary files (not just
directories) is the following.

For 25G BDR
-------------------

Create a file of size 24.3G:
 
truncate --size=24.3GB /some/dir/bluray.udf

Create udf file system and mount as loopback:

mkudffs -b 2048 -r 0x0201 /some/dir/bluray.udf

mount -t udf -o rw,loop /some/dir/bluray.udf /mount/point

Copy files to the mounted /some/dir/bluray.udf

Then burn:

umount /some/dir/bluray.udf

growisofs -speed=2 -Z /dev/sr0=/some/dir/bluray.udf


Before any burn using the "-dry-run" option is recommended.





-- 
Systemd: solving all the problems that you never knew you had.