FireWire Target Disk Mode shows wrong storage capacity

Question

Update: I was mistaken about the hard drive size, there was no corruption of the disk nor a mistake in the displayed size.

This is a question of many parts. The gist is captured by the title: I mounted using target disk mode and the capacity (of what should be a 160.04 gb drive) is 60.01 gb. The question is, how is this possible?

I tried to wipe the drive of an old MacBook and install Lubuntu. The install itself failed because I'd accidentally corrupted the boot disk, leaving me with a non-functional laptop. In order to solve the problem, I decided to clone a functional MacBook drive onto it, then start over with a new boot disk. (A clean install without an OS was not working, I'm hoping this will)

I did do a web search, I found someone with a similar issue who was mounting because they had hard drive problems. I did not have hard drive problems to begin with, does this indicate that I do now? If so, what about a bad install would decrease the capacity of a hard drive? How does it actually decrease the capacity of an HDD?

EDIT: some terminal output

admin$ diskutil list
/dev/disk0
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *160.0 GB   disk0
   1:                        EFI                         209.7 MB   disk0s1
   2:                  Apple_HFS Macintosh HD            159.7 GB   disk0s2
/dev/disk1
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *60.0 GB    disk1
   1:                        EFI                         209.7 MB   disk1s1
   2:                  Apple_HFS Macintosh HD            59.7 GB    disk1s2

admin$ sudo gpt -r show disk1
      start       size  index  contents
          0          1         PMBR
          1          1         Pri GPT header
          2         32         Pri GPT table
         34          6         
         40     409600      1  GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B
     409640  116538416      2  GPT part - 48465300-0000-11AA-AA11-00306543ECAC
  116948056     262151         
  117210207         32         Sec GPT table
  117210239          1         Sec GPT header