Backup only "filled" (=used) sectors?

USB Image Tool support forum
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Backup only "filled" (=used) sectors?

Post by pstein »

I have a 32GB USB flash drive.

This device is used by only 15% (as indicated e.g. by partition management tools).

However when I use USB image tool to create a backup then the resulting image is (uncompressed) 32 GB and compressed approx 21 GB.

How comes?

Is there a mode which backups really really only occupied sectors and omit free sectors?

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Re: Backup only "filled" (=used) sectors?

Post by Alex »

Device mode backups every byte of the device, regardless the partition data.
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