4 GB RAM but can only see 3 GB (HP 380)

From: Palle Girgensohn (girgen_at_FreeBSD.org)
Date: 10/30/05

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    Date: Sun, 30 Oct 2005 15:21:00 +0100
To: questions@freebsd.org

    Hi!

    Two different customers have bought a HP 380 server each, both with 4 GB
    RAM, but FreeBSD can only see three of them. BIOS counts to 4 GB. I've
    tried PAE, but it doesn't help. Any tips how I can make use of the last 1GB?

    Both are SMP, dual Xeon CPU's.

    Copyright (c) 1992-2005 The FreeBSD Project.
    Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
            The Regents of the University of California. All rights reserved.
    FreeBSD 5.4-RELEASE-p6 #2: Thu Aug 25 03:49:30 CEST 2005
        girgen@pingpong.hj.se:/usr/obj/usr/src/sys/HJKERNEL
    Timecounter "i8254" frequency 1193182 Hz quality 0
    CPU: Intel(R) Xeon(TM) CPU 3.40GHz (3400.14-MHz 686-class CPU)
      Origin = "GenuineIntel" Id = 0xf43 Stepping = 3
     Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA
    ,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
      Hyperthreading: 2 logical CPUs
    real memory = 3221172224 (3071 MB)
    avail memory = 3150819328 (3004 MB)
    ACPI APIC Table: <HP 00000083>
    FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
     cpu0 (BSP): APIC ID: 0
     cpu1 (AP): APIC ID: 6
    ioapic0 <Version 2.0> irqs 0-23 on motherboard
    ioapic1 <Version 2.0> irqs 24-47 on motherboard
    ioapic2 <Version 2.0> irqs 48-71 on motherboard
    ioapic3 <Version 2.0> irqs 72-95 on motherboard
    ioapic4 <Version 2.0> irqs 96-119 on motherboard
    npx0: <math processor> on motherboard
    npx0: INT 16 interface
    acpi0: <HP P51> on motherboard
    acpi0: Power Button (fixed)
    Timecounter "ACPI-safe" frequency 3579545 Hz quality 1000
    acpi_timer0: <24-bit timer at 3.579545MHz> port 0x908-0x90b on acpi0
    cpu0: <ACPI CPU> on acpi0
    cpu1: <ACPI CPU> on acpi0
    pcib0: <ACPI Host-PCI bridge> on acpi0
    pci0: <ACPI PCI bus> on pcib0
    pcib1: <ACPI PCI-PCI bridge> at device 2.0 on pci0
    pci2: <ACPI PCI bus> on pcib1
    pcib2: <ACPI PCI-PCI bridge> at device 0.0 on pci2
    pci3: <ACPI PCI bus> on pcib2
    bge0: <Broadcom BCM5704C Dual Gigabit Ethernet, ASIC rev. 0x2100> mem
    0xfdef0000-0xfdefffff irq 25 at device 1.0 on pci3
    miibus0: <MII bus> on bge0
    brgphy0: <BCM5704 10/100/1000baseTX PHY> on miibus0
    brgphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseTX,
    1000baseTX-FDX, auto
    bge0: Ethernet address: 00:13:21:6b:77:51
    bge1: <Broadcom BCM5704C Dual Gigabit Ethernet, ASIC rev. 0x2100> mem
    0xfdee0000-0xfdeeffff irq 26 at device 1.1 on pci3
    miibus1: <MII bus> on bge1
    brgphy1: <BCM5704 10/100/1000baseTX PHY> on miibus1
    brgphy1: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseTX,
    1000baseTX-FDX, auto
    bge1: Ethernet address: 00:13:21:6b:77:50
    pcib3: <ACPI PCI-PCI bridge> at device 0.2 on pci2
    pci4: <ACPI PCI bus> on pcib3
    ciss0: <HP Smart Array 6i> port 0x4000-0x40ff mem
    0xfdf80000-0xfdfbffff,0xfdff0000-0xfdff1fff irq 51 at device 3.0 on pci4
    pcib4: <ACPI PCI-PCI bridge> at device 6.0 on pci0
    pci5: <ACPI PCI bus> on pcib4
    pcib5: <ACPI PCI-PCI bridge> at device 0.0 on pci5
    pci6: <ACPI PCI bus> on pcib5
    pcib6: <ACPI PCI-PCI bridge> at device 0.2 on pci5
    pci10: <ACPI PCI bus> on pcib6
    uhci0: <Intel 82801EB (ICH5) USB controller USB-A> port 0x2000-0x201f irq
    16 at device 29.0 on pci0
    usb0: <Intel 82801EB (ICH5) USB controller USB-A> on uhci0
    usb0: USB revision 1.0
    uhub0: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
    uhub0: 2 ports with 2 removable, self powered
    uhci1: <Intel 82801EB (ICH5) USB controller USB-B> port 0x2020-0x203f irq
    19 at device 29.1 on pci0
    usb1: <Intel 82801EB (ICH5) USB controller USB-B> on uhci1
    usb1: USB revision 1.0
    uhub1: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
    uhub1: 2 ports with 2 removable, self powered
    uhci2: <Intel 82801EB (ICH5) USB controller USB-C> port 0x2040-0x205f irq
    18 at device 29.2 on pci0
    usb2: <Intel 82801EB (ICH5) USB controller USB-C> on uhci2
    usb2: USB revision 1.0
    uhub2: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
    uhub2: 2 ports with 2 removable, self powered
    uhci3: <Intel 82801EB (ICH5) USB controller USB-D> port 0x2060-0x207f irq
    16 at device 29.3 on pci0
    usb3: <Intel 82801EB (ICH5) USB controller USB-D> on uhci3
    usb3: USB revision 1.0
    uhub3: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
    uhub3: 2 ports with 2 removable, self powered
    pci0: <serial bus, USB> at device 29.7 (no driver attached)
    pcib7: <ACPI PCI-PCI bridge> at device 30.0 on pci0
    pci1: <ACPI PCI bus> on pcib7
    pci1: <display, VGA> at device 3.0 (no driver attached)
    pci1: <base peripheral> at device 4.0 (no driver attached)
    pci1: <base peripheral> at device 4.2 (no driver attached)
    isab0: <PCI-ISA bridge> at device 31.0 on pci0
    isa0: <ISA bus> on isab0
    atapci0: <Intel ICH5 UDMA100 controller> port
    0x500-0x50f,0x376,0x170-0x177,0x3f6,0x1f0-0x1f7 at device 31.1 on pci0
    ata0: channel #0 on atapci0
    ata1: channel #1 on atapci0
    acpi_tz0: <Thermal Zone> on acpi0
    atkbdc0: <Keyboard controller (i8042)> port 0x64,0x60 irq 1 on acpi0
    atkbd0: <AT Keyboard> irq 1 on atkbdc0
    kbd0 at atkbd0
    psm0: <PS/2 Mouse> irq 12 on atkbdc0
    psm0: model Generic PS/2 mouse, device ID 0
    sio0: <Standard PC COM port> port 0x3f8-0x3ff irq 4 flags 0x10 on acpi0
    sio0: type 16550A
    fdc0: <floppy drive controller (FDE)> port 0x3f2-0x3f5 irq 6 drq 2 on acpi0
    fd0: <1440-KB 3.5" drive> on fdc0 drive 0
    orm0: <ISA Option ROMs> at iomem
    0xee000-0xeffff,0xc8000-0xcbfff,0xc0000-0xc7fff on isa0
    pmtimer0 on isa0
    ppc0: parallel port not found.
    sc0: <System console> at flags 0x100 on isa0
    sc0: VGA <16 virtual consoles, flags=0x300>
    sio1 at port 0x2f8-0x2ff irq 3 on isa0
    sio1: type 16550A
    vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
    Timecounters tick every 10.000 msec
    acd0: DVDROM <DV-28E-N/C.6B> at ata0-master PIO4
    da0 at ciss0 bus 0 target 0 lun 0
    da0: <COMPAQ RAID 5 VOLUME OK> Fixed Direct Access SCSI-0 device
    da0: 135.168MB/s transfers
    da0: 138919MB (284506560 512 byte sectors: 255H 32S/T 34866C)
    SMP: AP CPU #1 Launched!
    Mounting root from ufs:/dev/da0s1a

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