missing hard drive space

[MG]

I have 5 hard drives equalling a 100gigs
don't think it's too much to ask to use em normally
root at THUNDERCAT1:/home/max# sudo fdisk -l /dev/sda

Disk /dev/sda: 164.6 GB, 164696555520 bytes
255 heads, 63 sectors/track, 20023 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x7e91a39a

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1       19647   157814496   83  Linux
/dev/sda2           19648       20023     3020220    5  Extended
/dev/sda5           19648       20023     3020188+  82  Linux swap / Solaris
root at THUNDERCAT1:/home/max#
root at THUNDERCAT1:/home/max# sudo fdisk -l /dev/sdb

Disk /dev/sdb: 160.0 GB, 160041885696 bytes
255 heads, 63 sectors/track, 19457 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0xb51fa8fc

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1               1       19457   156288321    7  HPFS/NTFS
root at THUNDERCAT1:/home/max# sudo fdisk -l /dev/sdc

Disk /dev/sdc: 400.0 GB, 400088457216 bytes
255 heads, 63 sectors/track, 48641 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x524a757d

   Device Boot      Start         End      Blocks   Id  System
/dev/sdc1               1       48641   390706232    b  W95 FAT32
root at THUNDERCAT1:/home/max# sudo fdisk -l /dev/sdd

Disk /dev/sdd: 320.0 GB, 320072933376 bytes
255 heads, 63 sectors/track, 38913 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x227f1d55

   Device Boot      Start         End      Blocks   Id  System
/dev/sdd1               1         392     3148708+   7  HPFS/NTFS
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