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Re: Support alternative output image formats?


From: Christian Franke
Subject: Re: Support alternative output image formats?
Date: Sat, 23 Mar 2024 18:45:34 +0100
User-agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 SeaMonkey/2.53.16

Antonio Diaz Diaz wrote:
Hi Christian,

Christian Franke wrote:
Are there any plans to support other output formats than raw images?

No, really.

AFF is a segmented format which supports compression, encryption and
signing. Using it instead of raw images could significantly reduce the
size of output images if the disk contents is compressible.

It is not possible to compress data out of order. Even if you compress each cluster or sector separately as they are read, you can't store them in a single file in order because you can't know how much space will require each compressed gap in the file corresponding to the sectors being skipped.

These problems do not occur with AFF format. The compressed segments need not to be ordered by the offsets of the original data and gaps may exist.




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