An administrator needs a bootable USB for installing a new Linux machine. The administrator downloaded the image file and named it as Linux_OS.iso in the / tmp directory. Which of the following commands will accomplish that task?
Correct Answer C. dd if=/tmp/Linux_OS.iso of=/dev/sda bs=512
dd if=<file> of=<device> bs=512
<file> is the name of the ISO image
<device> is the device name of your USB flash drive
bs=512 tells dd to read/write in 512 byte chunks.
You tend not to write an ISO to a partition on a USB stick (e.g. /dev/sdb1) but to the drive itself (e.g. /dev/sdb). The process of writing/unpacking the ISO to the USB stick itself will result in the correct partitions being created. Whether it is sda or sdb or anything else is immaterial here - we are not specifically told which drive to write to in the question, so we have to assume that the right drive (whatever that is) is given as the output path in each option BUT option D has the incorrect syntax for the dd command. The "Output File" option is 'of=' NOT 'out='
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Dan_Dan_The_Data_Center_Man
Highly Voted 3 years, 6 months agoDreydrey
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