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Re: back Up in CD

Luis Garay wrote:
Hi, im really new in Linux and newer in Debian. i'm trying to make athe back
up of a directory thas weights 3 gig's, but i need to storage this in CD,
how can i make the iso images this size?? Sorry, my english is pretty bad.

One possibility is to compress things. But going from 3G to 700M
is quite a compression. Also, compressed images are intolerant
of medium errors. If you really need to rely on the archive being
readable, I recommend not to compress.

Another is to use tar or cpio to create the image, then run
split to cut it up into CD sized images, and convert each
piece independently to ISOs and burn them. This can, of
course, be done even if one uses compression.

Also, one doesn't necessarily have to back up everything at
one time. It might be possible to back up different parts of
the directory tree.

You could do a complete backup using tar or cpio, then split
the archive, and burn CDs. Will take about 3 or 4. Then on a regular
basis just backup what has changed. This hopefully won't require
making a tar or cpio archive larger than a CD.

I suggest not using re-writable CDs for backup of critical data.
In my experience, they may not be readable on another drive,
or even on the same drive, after a period of time. They are fine
for temporary storage of non critical data.


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