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Old 04-03-2011, 06:46 AM   #1
ukwho
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What does the bs do in the command dd do?


Hello,

I have just created a usb boot disk so that I can install Fedora 14.

I used the following which was successfully. However, I am left wondering what does the bs parameter actually does. I know it mean bytes and copies these at a time. But how do I know what to set it to?

Code:
dd if=F14-Live-i686.iso of=/dev/sdb bs=8M
In the above example it is set to 8MB. However could I set this to any value that I want?

Many thanks for any advice,
 
Old 04-03-2011, 08:09 AM   #2
markush
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Hello ukwho,

the bs option tells dd which datasize it should move at a time (says the manpage). For further information look here: http://softpanorama.org/Tools/dd.shtml

Markus
 
  


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