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--- iso_image_tips [2025/03/20 18:16] – created juckins
+++ iso_image_tips [2025/03/20 18:18] (current) – juckins
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 </code>
+----
 __Create an .iso image from a CD__
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 The 2 values should match.
+----
+__Create a DVD .iso from multiple .iso images__
+This is helpful if you have 4 CD .isos (like an operating system distribution of CD 1 of 4, 2 of 4, 3 of 4, and 4 of 4) and you want just one .iso file on a single DVD disc for convenience purposes. \\
+Create the separate .iso files and put them into 1 temporary directory by using:
+<code>
+dd if=/dev/cdrom of=filename.iso
+</code>
+check creation is okay with:
+<code>
+sum -r /dev/cdrom
+sum -r <filename.iso>
+</code>
+Now copy [[http://juckins.net/sysadmin/scripts/make.dvdiso.bash.txt|make.dvdiso.bash]] into that directory, and call it like this (use the 'export' command if the script has .bash extension?):
+<code>
+export _POSIX2_VERSION=199209
+./make.dvdiso /iso/dir/path output_image_name.iso
+</code>
+that creates the .iso file. \\
+Now you can burn it to DVD using other software, such as Roxio, Nero, or Sonic.