Posts Tagged ‘SHA256’

If you’ve recently upgraded to 10.10 “Maverick Meerkat”, you will notice that when you double-click an .iso disc image file, it will want to create an image checksum (for data verification) before it burns the disc. For most of us, this is annoying, as it needlessly adds time to the burning process.

What’s worse is that once the image has been burned to disc, it will want to do it all over again, even though it apparently does not even compare the first checksum with the final one.

If you’ve tried the Preferences button before burning the image only to find nothing useful, the answer can be found by opening the main program window (Applications > Sound & Video > Brasero Disc Burner), and going to Edit > Plugins.

You will see 2 plugins related to checksum creation/verification: File ChecksumEnables Brasero to check the integrity of files“, while Image ChecksumEnables Brasero to perform integrity checks on discs after they have been burnt. Also enables the writing of a small file which holds the MD5 sum of all the files on the disc“.

Now, in my situation the Image Checksum doesn’t seem to do anything but waste time. In theory, having it create a checksum file and sticking it on the disc for later verification seems a great idea, but I’m personally wary of that as it could render some bootable discs useless. Luckily, from what I have seen, it does nothing of the sort, and it seems no checksum file is created anywhere, meaning this plugin is really just wasting your time.

But simply uncheck the Image Checksum plugin to disable it, and your burn process will go back to how it was.

Extra Notes:

You can also uncheck the File Checksum plugin, since it is much simpler verifying data discs via the terminal, but this is not vital.

If you actually find this plugin useful, you can choose the SHA1 or SHA256 hashing algorithms instead of the default MD5, simply by clicking Configure.


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