Cancelled wireless Migration Assistant… best way to start over?

Question

I was using the migration assistant utility to transfer data from my old MBP OS 10.6 to my new MBP OS 10.7. I was unaware of the issues while using Wifi, and it seemed like a convenient option at the time.
Little did I know, it takes forever to transfer 250 GB of data using migration assistant over wifi. So, I interrupted it and I intend on starting over.

However, now it says my HD on the new one has 60 GB occupied and I dont know where this exists. My created account has no documents/apps/etc. I want to delete this and start fresh. What is the best way to start over?

I intend on using the migration assistant using either ethernet or my time machine backup (FW400 to FW800 cable).
Any recommendations based on experience?

Answer 1

If the destination MBP is brand new, save yourself some trouble, restore it from factory and run the Migration Assistant again.

However you can probably run it again and everything should be ok, it really depends what you have and what has been copied. Check /Library/ and ~/Library (use the Terminal), for example if you had GarageBand or Garage Band Jam Packs, those may have been partially copied.

I did that when I brought an MBAir. It was taking so much that I aborted, cloned my other Mac's drive and used a USB drive to do the migration.

Answer 2

The best way is to boot to recovery hd and use disk utility to erase the new drive then start over.

That will clean up everything just in case an unlikely item was half copied over.