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simon / dd

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dd.md Raw

dd

  • ensure writes aren't cached:

dd if=inputfile of=outputfile bs=10M count=10 conv=fdatasync

  • write the first and last blocks (saves time):
dd if=/dev/zero of=FileFabric-1808-single-working-10G.raw bs=1MB count=0 seek=10240

dd if=/dev/zero of=FileFabric-1808-single-working-10G.raw bs=1024 count=0 seek=$[1024*1024*10]