Making Backups on Writable DVD Media

I need to free up a couple usb sticks.

In 2022 I wanted to back up some data on writable dvds. I ran short

of blank dvds and the data I wanted to backup ended up on a usb stick. Now I'm

trying to burn that data on dvds again.

I recorded one .iso file on a dvd with cdrskin. After recording I computed

the checksum of the dvd and it matched with the one of the original

.iso file.

Then I tried to use xorriso. I've set `-indev=my_file.iso' and

match that of the original file. Still I wanted to verify if the files
on the dvd and the original files were identical. So I tried this:

* Read the whole dvd to an .iso file on the disk.
* Mount that .iso file.
* Run `rsync -v --checksum --dry-run / ' where  is the directory
  containing the files to be archived and  the mount point of the
  .iso file obtained by reading the dvd. In other words  is the
  root directory where the original files reside. Note: the `/' after
   is important.

If there is a file in  that is not in  or the content of a
specific file is different in  and , rsync prints the name of the file.
In my case rsync didn't print anything. So all files in  are identical
with their couterparts in . So I've got files on dvd that are exact
copies of the originals.

Then I wrote an .iso image containing another set of files to a dvd. Again
I used xorriso. After writing for some time the write operation aborted
with an error.

I opened up xorriso again and tried to write the same .iso file to another
blank dvd. Again after writing for some time it aborted.

Then I tried to write another .iso image to another blank dvd using

Then I tried to write the .iso image that failed before but now using cdrskin.

Again after writing for some time the write operation aborted.

So I've got 3 successfully recorded dvds and 3 dvds that were blank and are

now useless. I think I'm going to leave it for now.

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