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-   -   Is there an optimum block size for the dd command? (https://www.linuxquestions.org/questions/linux-newbie-8/is-there-an-optimum-block-size-for-the-dd-command-85693/)

tgardner 08-25-2003 08:20 PM
Is there an optimum block size for the dd command?
 
I'm trying to speed up the process of imaging my hard drives using the dd command. I was wondering if there was an optimum block size for this command that would provide the greatest speed??? Does the speed vs. block size have anything to do with the format or type of the drive?

AltF4 08-25-2003 08:43 PM
usually HDD blocks are 512 bytes

any n*512 should work, 4096 or 8192 bytes should be enough to keep both drives busy (or the slower one :-)


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