Question re: Filesystems and Disks

Hi all,
I am working with VirtualBox running Solaris 64 on my Core i7 w/ 6GB RAM in Windows 7 right now trying to get some basics under the belt and I'm a bit confused so I'm trying to validate some of the knowledge I think I have absorbed:
At installation, the virtual machine was created with only one disk (Solaris64.vdi), so there was only one set of device files created in /dev/rdsk when devfsadm was run at boot (where/how it is called I'm uncertain). So now c1t0d0 and all of its partitions/slices are in /dev/rdsk if I am not mistaken about how new devices are detected/added to the system.
I have since added a few hard disks to the configuration and rebooted the system. I would like to mount /export/home on its own device, so c1t1d0 exists and needs to have /export/home mounted on it, instead of the same device that runs the operating system (I eventually would like to get swap on its own disk as well; I think that implies moving /var and one other fs to it's own disk, but unrelated at the moment).
If I am not mistaken, /etc/mnttab and /etc/vfstab do not automatically get updated with new devices because there is no filesystem attached. A disk needs to be formatted with at least one partition, which is itself made up of 8 slices that can be allocated different amounts of storage. For a given partition, one and only one filesystem can be appended to a slice on that partition. The format utility uses the partition argument to print information about each of the slices and lets you modify how space is allocated to each slice on the disk. You have to mount filesystems to each slice manually later.
A disk must be formatted using fdisk from format before filesystems can be mounted. I select to create a new partition and choose type 1=SOLARIS2 option utilizing 100% of the space on the disk for the partition and setting the partition to active. I then save the changes and exit to confirm the new partition. Using partition I can print and see:
> print
Current partition table (original):
Total disk cylinders available: 1302 + 2 (reserved cylinders)
Part      Tag    Flag     Cylinders        Size            Blocks
0 unassigned    wm       0               0         (0/0/0)           0
1 unassigned    wm       0               0         (0/0/0)           0
2     backup    wu       0 - 1301        9.97GB    (1302/0/0) 20916630
3 unassigned    wm       0               0         (0/0/0)           0
4 unassigned    wm       0               0         (0/0/0)           0
5 unassigned    wm       0               0         (0/0/0)           0
6 unassigned    wm       0               0         (0/0/0)           0
7 unassigned    wm       0               0         (0/0/0)           0
8       boot    wu       0 -    0        7.84MB    (1/0/0)       16065
9 unassigned    wm       0               0         (0/0/0)           0And this is where things get fuzzy. I've seen articles that describe the disk as having as few as four slices but mine were created with 9. This one already has a partition assigned to backup (not sure if this id is tied to a system function or not) and another for boot (same, not sure if this id is tied to a system function). The two assigned slices have the flag wu, the rest, which are allocated no space, to wm. So I guess my question is how can I design this aspect of my system best? Do I remove some of the slices (refered to as partitions by the utlity) that are empty and just make one big slice or do I need to keep the boot slice and reallocate it or just rename backup and then unmount and re-mount /export/home?
Remember my goal is to, in practice, have an understanding of how disks are formatted and addressed by the Solaris/UNIX environment from start to finish and mount /export/home to it's own disk. If I am not mistaken, when I create new user accounts, I will still mount their fs at /export/home and need only to change where /export/home mounts.
If anyone could direct me to some further reading, I'll be on docs.sun trying to find some of the answers, but so far the man page for format hasn't been much of a help for understanding the flags and how managing the slices in a partition affect/effect the design/implementation of the attached filesystems. Thanks for reading this lengthy question as well :)
-T

Darren,
If you are still out there, maybe you can clear something else up: I mounted the new device in the */etc/vfstab* and */etc/mnttab* and if I try to access the device with format, I get a message informing me the device has mounted partitions. However, when I run a df -h or a df -v I see some startling data:
# df -v
... output omitted ...
/mnt       /dev/dsk/c1t1d0        0 -1155515  1155515     0%
# df -h
... output omitted ...
/dev/dsk/c1t1d0s0        0K 16384E   1.1G     0%    /mntAs you can see the use column of the above output shows -1155515 blocks used and the inverse free. Similarly, the second output shows the device has 16384E used and size is 0K with 1.1G avail. Additionally when I try to print data for the device in format > partition, I see this:
> print
Current partition table (original):
Total disk cylinders available: 1302 + 2 (reserved cylinders)
Part      Tag    Flag     Cylinders        Size            Blocks
0 unassigned    wm       1 - 1250        9.58GB    (1250/0/0) 20081250
1 unassigned    wm       0               0         (0/0/0)           0
2     backup    wu       0 - 1301        9.97GB    (1302/0/0) 20916630
3 unassigned    wm       0               0         (0/0/0)           0
4 unassigned    wm       0               0         (0/0/0)           0
5 unassigned    wm       0               0         (0/0/0)           0
6 unassigned    wm       0               0         (0/0/0)           0
7 unassigned    wm       0               0         (0/0/0)           0
8       boot    wu       0 -    0        7.84MB    (1/0/0)       16065
9 unassigned    wm       0               0         (0/0/0)           0Why does my device show that it is allocated cylinders 1-1250 for slice zero, but show 16384E for space? Did I miss something in the format process?

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