stefansteve1999@tg says to 電訊台 ⟩ dd if=/dev/zero of=/home/steve/test bs=1k count=5M 5242880+0 records in 5242880+0 records out 5368709120 bytes (5.4 GB, 5.0 GiB) copied, 22.4494 s, 239 MB/snope