I'm cloning a larger HDD(750GB) to a smaller SSD(250GB). I shrunk the partitions and there is only 83gb of used space. (I defragmented and did a chkdsk). Also, sum of partition sizes is smaller than the SSD size.
I am now piping the dd process through pv to see the amount of data transfered. It's still going and it's already on 170gb+. Why is this? I used the "conv=sync, noerror" argument on dd. I thought it would finish at 83gb..
This is 'fdisk -l' output: (/dev/sda = 750gb HDD, /dev/sdb = 250gb SSD)
Disk /dev/sda: 750.2 GB, 750156374016 bytes 255 heads, 63 sectors/track, 91201 cylinders, total 1465149168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk identifier: 0x00000000 Device Boot Start End Blocks Id System /dev/sda1 1 1465149167 732574583+ ee GPT Partition 1 does not start on physical sector boundary. WARNING: GPT (GUID Partition Table) detected on '/dev/sdb'! The util fdisk doesn't support GPT. Use GNU Parted. Disk /dev/sdb: 240.1 GB, 240057409536 bytes 255 heads, 63 sectors/track, 29185 cylinders, total 468862128 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000000 Device Boot Start End Blocks Id System /dev/sdb1 1 1465149167 732574583+ ee GPT
And this is the command I'm using to clone:
sudo dd if=/dev/sda | pv | sudo dd of=/dev/sdb bs=64K conv=sync,noerror