If an unpartitioned hard drive is installed in a PacketShaper, it will cause the appliance to crash during bootup.

A  crash log similar to the following will be produced in this situation:

Loading.................................................................................................................................................................................................................................................................................................................................................................................................................................................
PacketShaper v8.3.1g1 2008-05-22,
died on Tue Oct 12 18:15:13 2010 GMT (Custom)
       (Tue Oct 12 18:15:13 2010 GMT)
model  (rev A), s/n , shaping:BYPASS
CPU Brand: GenuineIntel  Speed: 3593 MHz (measured)
<undetermined>
Firmware: 02/06/06
Running Task: ROOT

001 [0000001.0000] A: ipInitVirtualIface: installed NI for ip address 2 7f000003 ffffff00
002 [0000001.0000] A: niInit: initializing interface
003 [0000001.0000] I: gbitDeviceInit: bus=5, dev=8, io=d0320004, irq=5
004 [0000001.0000] I: dioBoardRev: Board Type is M1100 (rev A)
005 [0000001.0000] I: gbitDeviceInit: bus=5, dev=8, io=d0340004, irq=10
006 [0000001.0000] I: gbitDeviceInit: bus=3, dev=4, io=d0220004, irq=10
007 [0000001.0000] I: gbitDeviceInit: bus=3, dev=4, io=d0240004, irq=11
008 [0000001.0000] A: niInitVirtual: initializing interface
009 [0000001.0000] Standard output device initialized.
010 [0000001.0000] Psedo device initialized.
011 [0000001.0000] System clock initialized.
012 [0000001.0000] W: Change timer- 10 per msec, tick incr = 1
013 [0000001.0000] in firstTaskStartCallout
014 [0000001.0001] A: tzLocalTimeSetCom: date 7da0a0c, time 120f0d
015 [0000001.0002] System time initialized.
016 [0000001.0041] A: utlAllocateMemory: ptr=7ff8da90, name=IDE_PRD, num=2, size=24
017 [0000001.0041] I: IDEInit: 1.0: Unit:1 not detected. rc: 1009000e
018 [0000001.0160] A: utlAllocateMemory: ptr=7ff6da90, name=IDE_PRD, num=2, size=24
019 [0000001.0160] I: IDEInit: 1.0: Unit:3 not detected. rc: 1009000e
020 [0000001.0481] Flash Disk initialized.
021 [0000001.0482] I: dioBypassClose: closing bypass
022 [0000001.0482] I: nicSuspend: called for nic0, but not ready
023 [0000001.0482] I: nicSuspend: called for nic2, but not ready
024 [0000001.0482] Processor fault 0:  divide by 0

PacketShaper hard drives must be correctly partitioned and formatted before they can be recognized by the PSOS operating system used on PacketShapers.

A correctly partitioned and formatted hard drive would have four partitions which look like this:

Partition   Type       Size        Primary/Logical   Beginning Cylinder   Ending Cylinder

1               FAT16  2047MB   Primary                 0                                  260

2               FAT16  2047MB   Primary                 261                              521

3               FAT16  2047MB   Primary                 522                              782

4               FAT16  1890MB   Primary                 783                             1023