debian on a raid5 (4TB) issues

[Israel Garcia <igalvarez@gmail.com>]

Hi, maybe OT but, I\m trying to install debian lenny on a raid5 with
4TB. OS sees one big sda with 4TB, I can particion /boot, / and swap
but it only recognize 78GB instead the 4TB available. Is this because
the partition in booteable? Can I install debian OS  on this hdd with
these 3 partitions and use the rest for LVM? Thanks in advance,

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Regards;
Israel Garcia