Originally Posted By: mlord
Now, figure out which drive is which: hdparm -I /dev/sd[ab]
The output from that ought to show tons of data for both the old and new drives, one of which will be /dev/sda, and the other /dev/sdb.

Make certain you know which is which, and ask again here if in any doubt.

Here's a simpler way to accomplish that, without having to scroll backwards through 100s of lines of hdparm output. Two commands to dump the model numbers:

cat /sys/block/sda/device/model
cat /sys/block/sdb/device/model


The first line above will identify /dev/sda, and the second line will show /dev/sdb

-ml