Storage Capacity Problem - Macbook Air 11.6"

I got this MBAir last December, and sometime last month had a complete crash... why, because I was forced to terminate a certain application, everything frozen, and I force off (holding power button for 5 seconds)
History:
1. I installed a new partition for XP, not via bootcamp because I was having problem acquiring the drivers, size is 9G.
2. 128G as I remember shows as my storage capacity (or if not, it could be only minus 1-2G)
3. I realized, I don't need the XP at all, so I decided to have it deleted, but I could not delete it via Disk Utility so I left the app (Disk U) running at the background, and did something else.
4. Frozen... force restart.
5. Start up disk (both Mac and PC) could not be detected.
6. I inserted the flash drive startup disk, and performed the Disk Utility VERIFY AND REPAIR, but not successful.
7. Ran REFORMAT and REPARTITION.
Now I only have one partition, restored my Time Machine Backup, and everything was restored back, but I noticed huge amount of storage space missing. About 9 G.
Can someone help me with this please??
By the way, I now run Leopard 10.6.4, and still running the update (download) of the 1.06G file size... it takes days before completion with my current Satellite Internet connection.

Now, you can. Your SSD has a capacity of 128,000,000,000 bytes (this is the method device manufacturer's use. You will find this noted in the footnote on the MBA's specs: +1GB=1 billion bytes; actual formatted capacity may be less+.) If you divide the above by 1024^3 it will equal 119.21 GBs or 120,000,000,000 bytes, approximately. Hence what appears to be a loss of storage space. In actuality the two are the same. One computed using Base 10 and the other using Base 2 arithmetic.
You can approximate the difference on any drive by deducting about 7% from the manufacturer's stated capacity. For a 128 GB drive that is about 8.96 GBs - your missing 9 GBs.)

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