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• How to fix White Screen of Death after updating iTunes?

  - by cust0s

  The other night I updated my iTunes to the latest version (through Software Update) when I came to turn on my computer I was greeted with the dreaded white screen of death. I use an early 2008 iMac 24". I've tried the basic things, unplugging/turning off accessories, trying to boot from the install disk, reseting pram, etc, etc. Still no luck and no change what-so-ever. All I've been able to ascertain that my keyboard still works (by ejecting). I should point out that I did recently replace my Hard drive with a Western Digital Black 500GB (though the computer is well out of warrenty) and I'm a little concerned that the problem could be the screen.

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• Navigation keys on numeric keypad randomly stop working

  - by Tom Hughes

  Shortly after a restart, the arrow and navigation (Home, End...) keys on my numeric keypad will randomly stop working, and -- regardless of the state of the NumLock -- return only numbers. I notice this the most in browser applications (like this edit box) but the same effect is true on the command line and in desktop applications like Word. I swapped keyboards and now use a Microsoft keyboard (both are USB keyboards) but the same behavior persists. I also tried a clean boot to clean out startup programs but this made no difference. The separate arrow keys and navigation keys between the QWERTY keys and the numeric keypad work fine, but my strong preference (dating back to DOS and MS Flight Simulator) is to use the navigation keys in the numeric keypad.

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• Which hardware changes require operating system reinstallation?

  - by Mark

  I'm about to upgrade my computer but might keep some parts. Just wandering what I would have to keep to prevent me having to reinstall my OSs, at the moment I have a dual boot setup with ubuntu and windows 7. I'm pretty sure you can't just take your hard drive with the OS on it and put it into a different box and keep going (can you?) but I know you can change the graphics cards, secondary hard drives and ram with out a problem. So what is it that you can't change? The CPU? Motherboard? Thanks for any replies

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• new SBS 2011 Standard problems

  - by Damon

  Brand new SBS 2011 install. I went to remove the DHCP server role. It went into a "Preparing to configure Windows. Do not turn off your computer." Been there for hours. Finally, decided to power off and restart. After boot up, the same window and message appear and it just sits there spinning. "Preparing to configure Windows. Do not turn off your computer." I'd love to get this installed before the end of the day but it doesn't look like that's possible. Any ideas on how to get passed this?

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• Can I use a Retail DVD media with an OEM key to install Windows Vista?

  - by Sammy

  I got a Fujitsu computer with OEM license key and Windows Vista. I would like to reinstall Windows on it. But I didn't get any Windows media with it. However, I do poses more than just one DVD installation disc from my Retail copies of Windows Vista that I use on other computers. Can I use this media instead? Or do I have to order a specialty OEM DVD media from the manufacturer or Microsoft? Update: I have found some partition called "EISA" configuration partition. It is a hidden partition that I found in Disk Management. How can I make use of this? Do I boot from it or do I mount it to a drive letter and access it inside Windows? Can this be used to restore the computer? It is about 11 GB in size.

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• Error starting Hyper-V VM

  - by Peter Bernier

  I'm trying to start a VM on a new Hyper-V installation and I'm receiving the following error: The virtual machine could not be started because the hypervisor is not running. The following actions may help you resolve the problem: 1) Verify that the processor of the physical computer has a supported version of hardware-assisted virtualization. 2) Verify that hardware-assisted virtualization and hardware-assisted data execution protection are enabled in the BIOS of the physical computer. (If you edit the BIOS to enable either setting, you must turn off the power to the physical computer and then turn it back on. Resetting the physical computer is not sufficient.) 3) If you have made changes to the Boot Configuration Data store, review these changes to ensure that the hypervisor is configured to launch automatically. My machine supports virtualization at the hardware level and it is enabled in BIOS. Why am I receiving this error?

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• Supermicro SmartOS setup issue with HDDs

  - by Andrew B.

  I'm trying to setup SmartOS on my new Supermicro server (SYS-6027R-N3RF4+). I have 8 HDDs + 2 SSDs installed in the hot-swappable drive bays. I have not configured the Intel RAID controller on the machine (it shows no RAID configured, and lists all 8 HDDs). When I boot SmartOS from my USB key for the first time and get to the initial zpool creation I only see 2 disks listed. How can I tell which two drives are being referenced? How can I get SmartOS to recognize all 8+2 drives? Is there a BIOS setting I need to adjust?

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• XEN disk mapping problem under opensolaris

  - by Louis

  I have a system with two harddisks, i wanted to use the simplicity of ZFS for my file server and i also need to run a linux. I choosed XEN virtualization for that, supported on both system. My GRUB is well configured and i can boot both system. I would like is to run both system with solaris as a dom0 and the debian installed on the 2nd HD as a virtual machine. My problem is that i want to use the partitions of my 1st harddisk (sda1 under linux) and it does not work. I didn't find my use case on the web- Here is my Opensolaris device name of this partition : /dev/rdsk/c7d0p1 But when i use : disk = [ 'phy:rdsk/c7d0p1,sda1,w' ] as a disk mapping in my XEN configuration file i have the error : Error: Device 2049 (vbd) could not be connected. error: "rdsk/c7d0p1" is not a valid block device. I am "lost".

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• Can KVM CPU assignment count differ from physical hosts CPU count?

  - by javano

  I have read this question. I knew already that I could for example, have a quad core machine with four guests each having two vCPUs. As they don't all be require 100% CPU usage all the time, the scheduler would handle this for me. My question is about how this relates to a fail-over or migration situation; If host1 has two dual-core CPUs, and I assign guest1 four vCPUs (so it accessed all four physical cores), what will happen if I try and migrate it to host2 which only has one dual-core CPU? Can qemu-kvm emulate more vCPUs than there are physical? Or would I have to shut down the virtual machine, change the CPU assignment, migrate it, and then boot it back up (so no live migration)? Many thanks.

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• Repartition Ubuntu by command line?

  - by DisgruntledGoat

  On my server the filesystem includes these partitions: Filesystem Size Used Avail Use% Mounted on /dev/sda6 4.6G 929M 3.5G 21% / /dev/sda5 76M 20M 53M 27% /boot /dev/sda8 449G 199M 426G 1% /home /dev/sda7 4.6G 4.4G 0 100% /var (Output from df -ah) I'm storing the web sites and databases under /var and as you can see it's got full. The /home folder just has basic user directories and nothing else so I'd like to repartition the server so that /dev/sda8 is about 5GB, with the rest going to dev/sda7. What's the easiest way to do this via command line (i.e. SSH)?

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• Trucrypt or any HDD encryption solution with a bypass?

  - by sorrrydoctorforlove

  Hello experts, in my environment here we have started using trucrypt to encrypt and protect our laptops that are being brought out of the office. The issue comes with the password, we can document the passwords and assign them to users but if they simply use the program to change the password, and then forget it we are in trouble. We backup our data to external locations so it should be fine, but is there any way to install a bypass to be able to boot the laptop or stpo users changing their password (while they have local admin access)? Or should we try another solution? thanks.

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• Multiple Memcached server /etc/init.d startup script that works ?

  - by p4guru

  I install memcached server via source and can get standard start up script installed for 1 memcached server instance, but trying several scripts via google, can't find one that works to manager auto start up on boot for multiple memcached server instances. I've tried both these scripts and both don't work, service memcached start just returns to command prompt with no memcached server instances started lullabot.com/articles/installing-memcached-redhat-or-centos addmoremem.blogspot.com/2010/09/running-multiple-instances-of-memcached.html However this bash script works but doesn't start up memcached instances at start up though ? #!/bin/sh case "$1" in start) /usr/local/bin/memcached -d -m 16 -p 11211 -u nobody /usr/local/bin/memcached -d -m 16 -p 11212 -u nobody ;; stop) killall memcached ;; esac OS: Centos 5.5 64bit Memcached = v1.4.5 Memcache = v2.2.5 Anyone can point me to a working /etc/init.d/ startup script to manage multiple memcached servers ? Thanks

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• grub crc error after decompressing linux

  - by w00t

  Hi, I have a debian with a raid1 on it. Both HDDs have bootable flags and grub setup in MBR. If I only start up with sda, linux boots. If I only start up with sdb, grub shows up and says Decompressing Linux... crc error -- System halted I have reinstalled grub a few times now but still nothing. It goes like this: /dev/md0 contains /dev/sda1 /dev/sdb1 find /boot/grub/stage1 shows (hd0,1) (hd0,1) The line that boots Linux shows: root (hd0,0) kernel /vmlinuz-2.6.26-1-686 initrd /initrd.img-2.6.26-1-686 This kind of renders my "redundant" array useless. Any clues? update: just to mention, these are 2 different HDDs, sda is 320gb and sdb is 400gb. Both are WD and both have exactly the same partitions, cloned using sfdisk.

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• Notebook fan spinning at max after trying Linux

  - by Igor Kulman

  I have a Thinkpad T420 (4178-BSG) I use with Windows. The fan (cpu) was always very quiet and I was completely satisfied with it. A few days ago I booted Backtrack Linux from a flashdrive and the fan started to spin at maximum and was very loud. The problem is that this state persists. When I start the Thinkpad and boot Windows as usual the fan start spining at max and never stops. It drives me mad. It looks like somehow the Linux change some settings and I have to suffer. I tried reseting BIOS, updating BIOS, nothing helpes. I even removed the keyboard, looked at the fan but there is no dust.

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• fedora liveUSB fails, drops to debug shell

  - by evan

  Trying to install Fedora 15 via a live USB made with unetbootin. I get to the unetbootin boot menu, select Fedora-15-x86_64-Live-Desktop.is, I get to this screen, then it drops into a debug shell with the message sh: can't access tty: job control turned off. The last message is dmseg is dracut Warning: No root device "live:/dev/disk/by-label/Fedora-15-Beta-x86_64-Live-Desktop.is" found. Seems to be the same problem detailed here. Tried to try nk1eto's solution but there is no by-label directory in /dev/disk. There's by-id, by-path and by-uuid.

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• How to get Windows Server 2008 VM to use multiple cores

  - by David Fraser

  I have a Windows Server 2008 machine running in VirtualBox. On initial installation, only one processor was made available, but now I want to run it as a multiprocessor machine. I have made all four cores available in the VirtualBox settings (as well as enabling VT-x/AMD-V and Nested Paging), but Task Manager still only shows one CPU. However, the four CPU cores are visible in Device Manager under Processors. In the event log on startup, I can see the following relevant events: EventLog.6009 Microsoft (R) Windows (R) 6.00.6002 Service Pack 2 Multiprocessor Free Kernel-Processor-Power.4 Processor 0 exposes the following: 1 idle state(s), 0 performance state(s), 0 throttle state(s) Kernel-Processor-Power.4 Processor 255 exposes the following: 0 idle state(s), 0 performance state(s), 0 throttle state(s) Kernel-Processor-Power.4 Processor 255 exposes the following: 0 idle state(s), 0 performance state(s), 0 throttle state(s) Kernel-Processor-Power.4 Processor 255 exposes the following: 0 idle state(s), 0 performance state(s), 0 throttle state(s) How can I make this system actually boot up as a multiprocessor machine?

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• Cannot Login to SBS 2008

  - by Ryan Holt

  Hi All, I'm hoping someone has an answer for me... I installed a new Microsoft SBS 2008 server last week and everything appeared to be working normally. I went to reboot the server yesterday to finish the install for Microsoft Windows Installer 4.5 and upon reboot could no longer login to the server via either RDP or local console. The error message I get states that there are no logon servers available to service the logon request. I'm able to login to the server fine via Safe Mode with Networking but cannot login via a normal method. The server is currently at SP1. I attempted to install SP2 inside of safe mode after enabling the installation services via a registry edit but the install failed and rolled back after 2 or 3 hours. It appears that one of the services is not starting for some reason. I believe it's LSASS but can't actually login to see the active services during a normal boot. Does anyone have any suggestions?

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• Does kern.hz still have any relevance in FreeBSD if "dynamic tick mode" is enabled?

  - by Frerich Raabe

  I'm running a FreeBSD 9.0 setup as a virtual machine in a KVM setup. In previous versions of FreeBSD it was common to force the kern.hz setting to a lower value so that the virtual machine does not keep the host busy because it's handling timer interrupts without having any work to do - the FreeBSD Handbook explains: The most important step is to reduce the kern.hz tunable to reduce the CPU utilization of FreeBSD under the Parallels environment. This is accomplished by adding the following line to /boot/loader.conf: kern.hz=100 Without this setting, an idle FreeBSD Parallels guest OS will use roughly 15% of the CPU of a single processor iMac®. After this change the usage will be closer to a mere 5%. However, in FreeBSD 9, the "dynamic tick mode" (aka "tickless mode") is the default, controlled by the kern.eventtimer.periodic setting which defaults to 0 (read: tickless mode). This makes me wonder - does the tip of lowering kern.hz still have any relevance for making FreeBSD 9 play nicely in a virtual machine setup?

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• Writing an internal disk from IMG, what XP software to use?

  - by Andrew Swift

  I am trying to install the Chromium OS on an EEE PC 901, and I have succeeded in using Image Writer for Windows 0.2r23 to copy the IMG file to an SDHC card. Since the OS speed is limited by slow card access, I'd like to install the Chromium OS on the second, unused, internal SSD Drive, D:. However, Image Writer doesn't allow me to restore an internal drive from an IMG file. To be clear: I boot in XP on C: then run Image Writer to install the Chromium OS. Does anyone know how I can either convince Image Writer that D: is a removable drive or know of alternative program that will let me restore D: from an IMG file (non-windows file system)?

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• Making GRUB see RAID 0 under Ubuntu 10.10 LiveCD

  - by unknownthreat

  I just installed Windows 7 recently, and I expect that it would alter GRUB and it did. I've been following some guides around and I am always stuck at GRUB not able to detect the usual RAID content. I've tried running: sudo grub > root (hd0,0) GRUB complains it couldn't find my hard disk. So I tried: find (hd0,0) And it complains that it couldn't find anything. So I tried: find /boot/grub/stage1 It said "file not found". So what now? How can we make GRUB see RAID 0 under Ubuntu 10.10 LiveCD?

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• Backup Linux Root Partition (Fedora 12)

  - by SomeNewbie

  I setup my partition scheme to have an extra partition the size of my / partion. I have a separate home directory partition. Essentially, I will be doing things that might make my OS unstable so I'd like to backup the OS state but without bothering my home directory. Can I just backup (maybe with dd?) my root partition to another partition on the HDD? I know to restore it I would have to boot up with a livecd or something and do the reverse procedure. I want this to be as simple and require the least amount of external hardware as possible.

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• Win 7 laptop taking a long time to log on when off the domain

  - by pigeon

  I've clicked through on a few forums but unable to find a suggestion for this issue. I have a user with a HP laptop which will boot perfectly fine whilst connected to the network but at home it will take 4 minutes to log on. Some suggestions I have had is that its looking for the DNS server of the domain. Another was that it was suggested it was a roaming profile (it isn't). So hoping someone has encountered Windows 7 acting like this and has some suggestions. The other users on this domain don't have the issue and its a mix of XP and Win 7 client PCs.

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• What's a good public access terminal solution using old PCs and remote VMs?

  - by greenfingers

  Has anyone had experience using VMs as remote desktops for public access terminals (e.g. an internet cafe) In our case we don't want to charge money for access but I figure this solution has a few advantages, such as: can easily re-build VMs daily, erasing private data and clutter can use rickety old PCs for the 'dumb' terminals less IT support needed on site Can you suggest tools to help do this? Keeping the terminals up and running as much of the time as possible is the main priority, so they need to boot straight into full screen remote desktop and stay there.

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• Install Chromium OS to SECOND internal drive on EEE 901?

  - by Andrew Swift

  I am trying to install the Chromium OS on an EEE PC 901, and I have succeeded in using Image Writer for Windows 0.2r23 to copy the IMG file to an SDHC card. Since the OS speed is limited by slow card access, I'd like to install the Chromium OS on the second, unused, internal SSD Drive, D:. However, Image Writer doesn't allow me to restore an internal drive from an IMG file. To be clear: I boot in XP on C: then run Image Writer to install the Chromium OS. Does anyone know how I can either convince Image Writer that D: is a removable drive or know of alternative program that will let me restore D: from an IMG file (non-windows file system)?

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• How can I set the fan speed to 100% on a laptop?

  - by Codemonkey

  I recently purchased a HP Pavilion dv7-4031. When it's cool, it works smoothly and efficiently. However when CPU and GUP temperatures reach 60c and above, the PC starts freezing up and stuttering. I can hear that the fan speeds steadily increase all the way up to 70-80c. This is what pisses me off: I want the fan speeds to run 100% all the time, perhaps preventing the high temperatures in the first place. The way it is now, fan speeds only increase to keep internal temperatures at above 60c. I've searched all over for any sort of speed control, finding nothing. Any help appreciated. I have tried Speedfan. In "Fans" there is nothing listed. I took that as a bad sign. The BIOS is pathetic, and only has 4 or 5 changeable settings, including "Quickstart" and "Boot order"

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