Do you need to format a flash drive before dd an image to it?

3

Does dd or Windows Image Writer work regardless whether the target device was formatted or partitioned correctly?

I'm trying to flash a Chromium OS build to a USB flash drive following these instructions.

Jader Dias

Posted 2012-07-17T01:21:45.937

Reputation: 13 660

No you don't need to see this: https://superuser.com/questions/1199344/dd-to-a-different-filesystem

– Shayan – 2019-10-24T20:58:02.947

Answers

3

Yes (you don't need to partition the drive). When you write directly to a block device (/dev/sdX) with dd, you are overwriting any partition table currently on the drive.

I haven't ever used (or heard of) Windows Image Writer, but if it's similar to dd, it writes raw data to the drive, regardless of what was present before.

user55325

Posted 2012-07-17T01:21:45.937

Reputation: 4 693

This answer is wrong, see this: https://superuser.com/questions/1199344/dd-to-a-different-filesystem

– Shayan – 2019-10-24T20:58:10.800