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• Cannot boot to HDD or Optical when Motherboard in AHCI mode

  - by Shevek

  I have an Abit AB9 QuadGT motherboard and am trying to swap over to AHCI mode. I have an existing Windows 7 installation which was installed under IDE mode. I have set the msahci registry setting to 0. When I try to boot in AHCI mode I get "DISK BOOT FAILURE, INSERT SYSTEM DISK AND PRESS ENTER". I have tried booting with my Win 7 DVD in the optical drive. There is 1 SSD (System), 1 HDD (Data) and 2 optical drives connected via SATA If I switch back to IDE mode everything boots fine, either from the SSD or from a CD or DVD in the optical drive. Why can't I use AHCI mode?

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• Netdom to restore machine secret

  - by icelava

  I have a number of virtual machines that have not been switched on for over a month, and some others which have been rolled back to an older state. They are members of a domain, and have expired their machine secrets; thus unable to authenticate with the domain any longer. Event Type: Warning Event Source: LSASRV Event Category: SPNEGO (Negotiator) Event ID: 40960 Date: 14/05/2009 Time: 10:24:54 AM User: N/A Computer: TFS2008WDATA Description: The Security System detected an authentication error for the server ldap/iceland.icelava.home. The failure code from authentication protocol Kerberos was "The attempted logon is invalid. This is either due to a bad username or authentication information. (0xc000006d)". For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp. Data: 0000: c000006d Event Type: Warning Event Source: LSASRV Event Category: SPNEGO (Negotiator) Event ID: 40960 Date: 14/05/2009 Time: 10:24:54 AM User: N/A Computer: TFS2008WDATA Description: The Security System detected an authentication error for the server cifs/iceland.icelava.home. The failure code from authentication protocol Kerberos was "The attempted logon is invalid. This is either due to a bad username or authentication information. (0xc000006d)". For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp. Data: 0000: c000006d Event Type: Error Event Source: NETLOGON Event Category: None Event ID: 3210 Date: 14/05/2009 Time: 10:24:54 AM User: N/A Computer: TFS2008WDATA Description: This computer could not authenticate with \\iceland.icelava.home, a Windows domain controller for domain ICELAVA, and therefore this computer might deny logon requests. This inability to authenticate might be caused by another computer on the same network using the same name or the password for this computer account is not recognized. If this message appears again, contact your system administrator. For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp. Data: 0000: c0000022 So I try to use netdom to re-register the machine back to the domain C:\Documents and Settings\Administrator>netdom reset tfs2008wdata /domain:icelava /UserO:enterpriseadmin /PasswordO:mypassword Logon Failure: The target account name is incorrect. The command failed to complete successfully. But have not been successful. I wonder what else needs to be done?

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• Mac OS X: network disabled because security breach

  - by fireeyedboy

  Dear all, I just recieved a message on my Mac OS X system telling me (loosely translated from Dutch): "The network has been temporarily disabled because the network's security was breached." (It's a wireless WPA2-PSK secured network BTW) I looked in the logs of my router (a Zyxel P-2602HW-D1A) only to see a few (outbound) "syn flood TCP ATTACK" logs, but those were from like a week ago, other than that nothing. What tools on Mac OS X do I have to analyse this security breach occurence? Are there some security logs on Mac OS X that I can inspect? What other measurements should I take? And how serious should I take this warning from Mac OS X? System: Macbook Pro Intel Core 2 Duo 2.2 Ghz OS: Mac OS X 10.5.8 Network: wireless WPA2-PSK Relevant software: Parallels Desktop with Windows XP (was open, but stopped at the time) Other systems on my network: Windows XP SP3 desktop (was running at the time) If you need any more info, don't hestitate to ask. Thanks in advance.

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• Alignment requirements: converting basic disk to dynamic disk in order to set up software RAID?

  - by 0xC0000022L

  On Windows 7 x64 Professional I am struggling to convert a basic disk to a dynamic one. Under Disk Management in the MMC the conversion is supposed to be initiated automatically, but it doesn't. My guess: because of using third-party partitioning tools there isn't enough space in front and after the partitions (system-reserved/boot + system volume) to store the required meta-data. When demoting a dynamic disk to a basic disk manually, I noticed that some space seems to be required before and after the partitions. What are the exact alignment requirements that allow the on-board tools in Windows to do the conversion?

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• Why subnet mask for IP 10.0.1.4 is 255.255.255.0?

  - by Rohit Kandhal

  Well I'm not sure whether I'm missing something here. But all I've read is that if first octet of IP is within 0 - 127 then it is categorized as Class A subnet and correspondingly Subnet Mask for this is 255.0.0.0 but when I connect my system to Apple airport then my system gets IP as 10.0.1.4 however subnet mask is 255.255.255.0 not 255.0.0.0. Please explain what I'm missing here. If there is something like for apple router subnet mask is calculated on some different flags then please let me know.

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• Disable Memory Modules In BIOS for Testing Purposes (Optimize Nehalem/Gulftown Memory Performance)

  - by Bob

  I recently acquired an HP Z800 with two Intel Xeon X5650 (Gulftown) 6 core processors. The person that configured the system chose 16GB (8 x 2GB DDR3-1333). I'm assuming this person was unaware these processors have 3 memory channels and to optimize memory performance one should choose memory in multiples of three. Based on this information, I have a question: By entering the BIOS, can I disable the bank on each processor that has the single memory module? If so, will this have any adverse effects or behave differently than physically removing the modules? I ask due to the fact that I prefer to store the extra memory in the system if it truly behaves as if the memory is not even there. Also, I see this as an opportunity to test 12GB vs. 16GB to see if there is a noticeable difference. Note: According to http://www.delltechcenter.com/page/04-08-2009+-+Nehalem+and+Memory+Configurations?t=anon, the current configuration reduces the overall data transfer speed to 1066 and in addition, the memory bandwidth goes down by about 23%.

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• NetBSD as VMware workstation guest: `startx` hangs and maxes all CPUs utilization

  - by Howard Guo

  I am using VMware workstation 8. I have attempted to install and run NetBSD 5.1.2 and 6.0. Installations all went OK and the system was usable until I install a window manager. After installed xfce4, in NetBSD 5.1.2, I could startx and used xfce4 two times, however consecutive startx will hang and max all CPU to 100%. In NetBSD 6.0 RC2, I could not even start xfce4 once, startx hangs and max all CPU to 100%. I have tried to use both vmwlegacy and vmware device drivers, they don't help. I have also tried both 32bit and 64bit NetBSD, they behave in the same way. I also tried to catch the output of startx, however system was already hanging before the output gets flushed. Apparently no one else has encountered these troubles on Google search, did I miss any configuration piece? Any other suggestions please?

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• How Do I Restrict Repository Access via WebSVN?

  - by kaybenleroll

  I have multiple subversion repositories which are served up through Apache 2.2 and WebDAV. They are all located in a central place, and I used this debian-administration.org article as the basis (I dropped the use of the database authentication for a simple htpasswd file though). Since then, I have also started using WebSVN. My issue is that not all users on the system should be able to access the different repositories, and the default setup of WebSVN is to allow anyone who can authenticate. According to the WebSVN documentation, the best way around this is to use subversion's path access system, so I looked to create this, using the AuthzSVNAccessFile directive. When I do this though, I keep getting "403 Forbidden" messages. My files look like the following: I have default policy settings in a file: <Location /svn/> DAV svn SVNParentPath /var/lib/svn/repository Order deny,allow Deny from all </Location> Each repository gets a policy file like below: <Location /svn/sysadmin/> Include /var/lib/svn/conf/default_auth.conf AuthName "Repository for sysadmin" require user joebloggs jimsmith mickmurphy </Location> The default_auth.conf file contains this: SVNParentPath /var/lib/svn/repository AuthType basic AuthUserFile /var/lib/svn/conf/.dav_svn.passwd AuthzSVNAccessFile /var/lib/svn/conf/svnaccess.conf I am not fully sure why I need the second SVNParentPath in default_auth.conf, but I just added that today as I was getting error messages as a result of adding the AuthzSVNAccessFile directive. With a totally permissive access file [/] joebloggs = rw the system worked fine (and was essentially unchanged), but as I soon as I start trying to add any kind of restrictions such as [sysadmin:/] joebloggs = rw instead, I get the 'Permission denied' errors again. The log file entries are: [Thu May 28 10:40:17 2009] [error] [client 89.100.219.180] Access denied: 'joebloggs' GET websvn:/ [Thu May 28 10:40:20 2009] [error] [client 89.100.219.180] Access denied: 'joebloggs' GET svn:/sysadmin What do I need to do to get this to work? Have configured apache wrong, or is my understanding of the svnaccess.conf file incorrect? If I am going about this the wrong way, I have no particular attachment to my overall approach, so feel free to offer alternatives as well. UPDATE (20090528-1600): I attempted to implement this answer, but I still cannot get it to work properly. I know most of the configuration is correct, as I have added [/] joebloggs = rw at the start and 'joebloggs' then has all the correct access. When I try to go repository-specific though, doing something like [/] joebloggs = rw [sysadmin:/] mickmurphy = rw then I got a permission denied error for mickmurphy (joebloggs still works), with an error similar to what I already had previously [Thu May 28 10:40:20 2009] [error] [client 89.100.219.180] Access denied: 'mickmurphy' GET svn:/sysadmin Also, I forgot to explain previously that all my repositories are underneath /var/lib/svn/repository UPDATE (20090529-1245): Still no luck getting this to work, but all the signs seem to be pointing to the issue being with path-access control in subversion not working properly. My assumption is that I have not conf

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• backup of KVM VM's running on Ubuntu 12.4.1 precise edition from a remote machine

  - by Dr. Death

  I am creating a library API which will take the backup of all the VM's running on KVM hypervisor. My VM's can be of any type. I am taking this backup from a remote machine and need to put the backup at remote server. I have KVM, Libvirt installed on my system. Some of my VM's are LVM based and some are normal VM's running on KVM. I research and found out an excellent perl script for taking the backup http://pof.eslack.org/2010/12/23/best-solution-to-fully-backup-kvm-virtual-machines/ but since I am developing this library in C++ I cannot use it however it has given me a good understanding of how it will work. One thing I didnot able to sort out is if my VM's are not created using virt-manager or are created using any other tool them virsh system list command does not give them in the list of running VM's however they are running perfectly on my KVM server. Is there a way to list these VM's in my system list anyhow? secondly, when I am taking backup from the remote machine I am getting out of my ssh mode as soon as my libvirt command finishes and for every command I need to ssh again, Is there a way that I do not need to ssh each and every time? I have already used the rsa key for ssh but when once my command finishes my control moves to the remote machine again and try to find out my source VM location in remote machine's local drives which in turn fails it. here is the main problem I am facing. also for the LVM based VM I am able to take the live backup but for non LVM based my machines are getting suspended and not been able to take the live backup. Since my library will work on the remote machine only I might not know the VM's configruation on the KVM server. so need to make it consistent for all the VM's. Please share any thing related to this issue so that I may be able to take the live backup of the non lvm vm's also. I'll update my working and any research findings time to time to all of you. Thanks in advance for your suggestions in these regards.

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• UEC - Can the Cluster Controller and Storage Controller be seperate systems?

  - by Jeremy Hajek

  My department is implementing an Ubuntu Enterprise Cloud. I have done the testing and am quite comfortable with the 4 pieces, CC/SC, CLC, WS, NC. Looking at various documents below it appears the the Storage Controller and Cluster Controller (eucalyptus-sc and eucalyptus-cc) are always installed on the same system. My question is this: can I install the storage controller and the cluster controller on separate systems? http://open.eucalyptus.com/wiki/EucalyptusAdvanced_v2.0 the picture indicates that cc and sc are two different machines http://www.canonical.com/sites/default/files/active/Whitepaper-UbuntuEnterpriseCloudArchitecture-v1.pdf P.10 1st paragraph uses the word "machine(s)" http://software.intel.com/file/31966 P. 8 indicates the same separate architecture BUT... https://help.ubuntu.com/community/UEC/PackageInstallSeparate indicates below that the SC and CC are to be on the same system.

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• OSX 10.8 Corrupted User Account Using Launchctl

  - by Scott

  I used the following command: launchctl unload -w /System/Library/LaunchAgents/com.apple.notificationcenterui.plist in an attempt to disable notification center. I'm not sure that I got all of the commands right and appear to have corrupted the account that I executed it from - I get a grey screen when I try to login on that account. Fortunately I have another account on the machine with admin privileges so I can still use the machine. I would however like to restore the account to a working condition preferably without having to resort to a complete system restore from my time machine backup. Is there a way of diagnosing the current status of this launchagent and returning it to its original state?

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• Dual boot Windows XP 32 bit and Windows 7 64-bit

  - by Santanu Roy

  My system config is AMD phenom-II x2 550 processor, 2x2gb(800fsb)ddr2 zion ram, gigabyte ga-m61pme-s2 motherboard, 160gb sata hdd. Now I am planning to install Windows XP sp3 (32-bit) and Windows 7 (64bit). My first questions are: Is my system enough for the above mentioned two OSes? Which OS one should be installed first on local disk c: drive? I have both XP and vista drivers on separate disks as provided with my motherboard but don't have drivers for win-7, so can I use my vista driver for win-7?

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• SSIS DSN Not Showing as ODBC Data Source

  - by user1114330

  I have been following the directions here: http://social.msdn.microsoft.com/Forums/en-US/sqlintegrationservices/thread/05ccd778-b78c-4a83-a10a-c4ae412cc6e4 And ran into a problem where my System DSN is not showing up as a ODBC provider. I found this which seemed promising: http://support.microsoft.com/kb/2000277 I was not able to delete the key but followed but I did what was suggested: "If unable to delete the key, double-click the key and erase the Data value entered. Once done, the value should read ' (value not set) '" However, after following the instructions my System DSN still does not appear as an option. The USER DSN however does show...has shown but does not work as I get a permissions error. Any ideas?

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• Windows 7 won't read from NAS on LAN

  - by Alfy

  I've got a Linkstation NAS drive on a local network. Having just got a new laptop with Windows 7 Home Professional, I can no longer read anything of the drive. I've tried accessing the drive using \192.168.1.55\share, using ftp programs such as WinSCP, filezilla and even using firefox to hit ftp://192.168.1.55. The really annoying thing is that through these methods I can see the files on the drive, counting out any kind of connection issues. I can navigate through the NAS file system, but as soon as I try and copy a file off the NAS, things just stop working. Accessing the drive through a Windows XP machine works fine. So far I've tried: Disabling firewalls Adding the LmCompatibilityLevel key to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa Using the 40 - 56 bit encryption instead of the 128 bit. Has anyone got any suggestions of what I can check or try? This is driving me crazy and I'm totally out of ideas?

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• How to solve " dpkg was interrupted, you must manually run 'dpkg --configure -a' to correct the prob

  - by Hoang

  I get this message when my ubuntu system was crashed. How to solve it?

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• Unable to remove broken Exchange 2003 installation (SBS 2003)

  - by Austin ''Danger'' Powers

  We have a non-functional Exchange 2003 installation on our SBS 2003 server that I am trying to uninstall. So far we have never used, and will never use, Exchange on this server- all we need is to remove it from the system (as it is installed on a partition which we want to merge with the main data partition to increase network storage capacity). Attempting to remove it using Add/Remove Programs produces the following error: When doing a search in ADUC to see which users still have a mailbox associated with them, it seems to only be the domain administrator account: As the Exchange installation is broken, it is not possible to run either System Manager or Exchange 5.5 Administrator to make mailbox changes. How can I forcibly remove a mailbox (which does not need to be salvaged or backed up), to allow the uninstall of Exchange to proceed? Any ideas would be appreciated!

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• Who should own the root folder of a drive?

  - by Gaia

  All partitions are NTFS. The system is Windows 7 Pro. It does not belong to a domain. I do use shared folders occasionally (both via the Homegroup and old school sharing). Should I set the owner to be Administrators or SYSTEM for a A) fixed drive? B) removable drive? C) Is it ok to make every object on the drive inherit the new ownership? I just realized that I had some messy settings because I turned UAC on for the first time in years and I am now getting some undesirable prompts. I already have permissions set properly and I am only concerned with ownership.

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• Errors reported by "powercfg -energy"

  - by Tim

  Running "powercfg -energy" under Windows 7 command line, I received a report with following three errors: System Availability Requests:Away Mode Request The program has made a request to enable Away Mode. Requesting Process \Device\HarddiskVolume2\Program Files\Windows Media Player\wmpnetwk.exe CPU Utilization:Processor utilization is high The average processor utilization during the trace was high. The system will consume less power when the average processor utilization is very low. Review processor utilization for individual processes to determine which applications and services contribute the most to total processor utilization. Average Utilization (%) 49.25 Platform Power Management Capabilities:PCI Express Active-State Power Management (ASPM) Disabled PCI Express Active-State Power Management (ASPM) has been disabled due to a known incompatibility with the hardware in this computer. I was wondering for the first error, what does "enable away mode" mean? for the second, what utilization percentage of CPU is reasonable? for the third, what is "PCI Express Active-State Power Management (ASPM)"? How I can correct the three errors? Thanks and regards!

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• Reset Mac OS X (Snow Leopard) File Permissions -- All Files

  - by Frank

  Is their a script or process completely reset all file system file permissions to factory default? (Less restoring from a image backup or reinstalling the OS). This would include I've affected all files from / to Applications and home folder and all contents. (Everything) I've tried to use the Disk Utility's First Aid 'Repair Disk Permissions' but it didn't seem to touch or affect everything - some but not all. I've ran it twice so far... I've seen this but it's not quite the something. Fixing mac user file permissions, not the system The reason for all of this is I accidentally ran a chmod on all files (as sudo). Working too fast, now I'm in a hole.

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• KeePass justification

  - by Jeff Walker

  I work at a place that tries to take security seriously, but sadly, they often fail. Currently, one of the major ways they fail is password management. I personally have about 20 accounts (my personal user id on lots of machines). For shared "system" accounts, there are about 45 per environment; development, test, and production. I have access to 2 of those, so my personal total is somewhere around 115 accounts. Passwords have to be at least 15 characters with some extensive but standard complexity constraints, and have to be changed every 60 days or so (system accounts every year). They also should not be the same for different accounts, but that isn't enforced. Think DoD-type standards. There is no way to remember and keep up with this. It just isn't humanly possible, as far as I'm concerned. This might be a good justification of a centralized account management system, a la LDAP or ActiveDirectory, but that is a totally different battle. Currently the solution is an Excel spreadsheet. They use Excel to put a password on it, and then most people make a copy and remove the password. This makes my stomach turn. I use KeePass for this problem and it manages all of my account very well. I like the features like auto-typing, grouping, plugins, password generation, etc. It uses AES-256 encryption via the .Net framework, and while not FIPS compliant, it has a very good reputation. The only problem is that they are also very careful about using randomly downloaded software. So we have to justify every piece of software on our workstations. I have been told that they really don't want me to use this, be cause of the "sensitive nature" of storing passwords. sigh My justification has to be "VERY VERY strong". I have been tasked with writing a justification for KeePass, but as I am lazy, I would like any input that I can get from the community. What do you recommend? Is there something out there that is better or more respected than KeePass? Is there any security experts saying interesting things on this topic? Anything will help at this point. Thanks.

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• Can DPM 2007 back up Active Directory?

  - by rbeier

  We're installing Microsoft Data Protection Manager 2007 - we'll be using it to back up Exchange and SQL Server among other things. Does anyone know if DPM can also back up Active Directory? It sounds like the answer is "not really". You can install the DPM agent on a domain controller and make system state backups. But if your Active Directory is out of commission, there will be no way to restore the backups, since DPM depends on AD. Currently we're just using Windows Backup (ntbackup) to take system state backups on one of the DCs. Should we just continue with that? Thanks, Richard

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• Newbie ask Swap Value: How much Swap do I have?

  - by Cintaku

  When looking vmstat, this is what I got: procs -----------memory---------- ---swap-- -----io---- --system-- -----cpu------ r b swpd free buff cache si so bi bo in cs us sy id wa st 1 0 0 2872 0 0 0 0 8 17 0 14 3 1 94 2 0 the cache is 0. I have no idea how much the whole swap I have. But when not enough RAM (256 MB), the swap will be used and look like below: procs -----------memory---------- ---swap-- -----io---- --system-- -----cpu------ r b swpd free buff cache si so bi bo in cs us sy id wa st 3 1 2468 0 0 0 0 0 8 17 0 16 3 1 94 2 0

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• How to compare speed of graphics cards in Windows desktop environment?

  - by Al Kepp

  I use Windows 7 and Intel Core i3 CPU with integrated graphics. My problem is that it eats valuable system RAM for display. I can replace it with an old PCIe Radeon X700, so all system RAM will be usable for applications. The question is if an old Radeon X700 is comparable in W7 desktop speed to a new integrated i3 graphics. Are there any test programs which compare the speed of graphic cards in Windows 7 desktop environment (i.e. no Direct3D games, just Windows desktop)? (According to Tomshardware, Radeon X700 is probably even faster than Core i3 in 3D. But there are no native WDDM 1.1 W7 drivers for X700, only WDDM 1.0 Vista drivers are available.)

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• Internet cafe software for linux

  - by pehrs

  I have gotten a request to roll out a total of 8 internet cafe's in a large network. Budget is non-existent as it will all be done for a non-profit. I was planing to use Ubuntu and live-cds to minimize the amount of management required, but I can't seem to find any suitable internet cafe system that is Ubuntu based. The requirements are pretty basic: It needs to keep track of logged in time and log out users when their time it up. No billing will be done, it will just be used to ensure people can share the computers fairly. It should be possible to force logout from a central system. Users will be unskilled, so it has to have a GUI. What (preferably free, considering the shoe-string budget) software would you suggest to manage this?

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• More RAM in motherboard than CPU can process

  - by Videographer Francisco Ferrer

  As I understand reading in the forum post :" By making more memory available to the system more data can be cached in RAM, so there will be less hard drive activity, and less swapping to memory so your system will perform better." But what happen when motherboard for a desktop that supports( and had install) more RAM than the procesor can handle?(aka:procesor Max Memory Size). Is there any advantage to have a MB that hold a bigger RAM capacity than the CPU? If so, how can this be translate using in a program like Adobe After Effects, RAM preview? thanks

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