ESXi on the host system with a physical restriction of the MAC

Similar Questions

• Internet settings in vmware to host system

  Hello

  I installed Redhat-5 using vmware and host system is windows 7. I use internet to the host system with direct wiring (without any router) connection. Now I want to access internet in redhat-5. How to set the ip address for internet access.

  Kind regards

  Madhu

  Assuming that the virtual machine is set to the automatic (DHCP Client) IP address just to open the settings of the virtual machine, select the virtual network card and choose NAT.

  André

• Cannot migrate VM between 5.5 ESXi versions: the version of the product to the destination host does not support one or several CPU features

  We receive an error message that I am trying to make sense. I understand very well the notion of compatibility, CPU, CPUID, masking and so on, after working on a competitor hypervisor. However, this error seems wrong (or needs better wording) based on my understanding:

  Here is the message:

  ----

  A general error occurred: the version of the product to the destination host does not support one or several features of the CPU currently use by the virtual machine.

  Characteristics of CPUID level 0 x 1 'ecx' register are indicated with a '1' bit: x00x:xxx0:xx0x:x 000: x 0 11xx:00: 00xx:11xx

  ----

  
  

  This happened during the migration between two hosts ESXi with the same physical processors - in this case, a Westmere X 5650.

  
  

  The source host is on ESXi build 2068190 (5.5). The destination host is on ESXi build 1474528.

  
  

  The bits it seems to complain are:

  
  

  DTES64

  Monitor/MWait

  Cx16

  PDCM

  The punch line seems to be: "the product version of the destination host. However, I have trouble believing that support for these features have been added to ESXi between the two versions. If it were, VMware has been certainly silent about.

  For what it's worth, explicitly set us the CPUID masks in our virtual machines (no, CVS is not an option for us at this time.) This is the mask:

  CPUID.1.EAX = "00000000000000100000011001010001".

  CPUID.1.ECX = "00000010100110001110001000111111".

  CPUID.1.EDX = "10001111111010111111101111111111".

  CPUID.80000001.ECX = "00000000000000000000000000000001.

  CPUID.80000001.EDX = "00101000000100000000100000000000".

  cpuid.d.EAX = "00000000000000000000000000000000".

  cpuid.d.ECX = "00000000000000000000000000000000".

  cpuid.d.EDX = "00000000000000000000000000000000".

  Note that the bits of the message complains (2, 3, 14, 15) * are * in fact forced to '1' in our mask of cpuid.1.ecx. That means (if I understand correctly), ESXi does not have the virtual machine unless the host processor supports the feature. And in our case, the virtual machine will start with happiness on nodes, with both versions. It will be not simply migrate between them.

  So, long story short, is this a bug of ESXi? The error message is misleading? I understand something?

  Thank you

  
  Matt

  To use the masks feature VM in this way, you must replace all the 1 to your masks with-'s:

  CPUID.1.EAX = "00000000000000-000000 - 00-0 - 000-

  CPUID.1.ECX = "000000-0-00--000---000-000---".

  CPUID.1.EDX = '-000 - 0-0 - 0-

  CPUID.80000001.ECX = "0000000000000000000000000000000 -"

  CPUID.80000001.EDX = "00-0-000000-00000000-00000000000.

  cpuid.d.EAX = "00000000000000000000000000000000".

  cpuid.d.ECX = "00000000000000000000000000000000".

  cpuid.d.EDX = "00000000000000000000000000000000".

  Zeros erases the features that are not available on your hosts Westmere, and dashes will leave the other one features.  The problem with those masks was forced to you certain features on who would have normally been off.

• How to increase the amount of memory to the host system?

  Hello gentlemen,

  I am new to VMware ESXi 5, and I want to know how to increase the amount of memory for the host system?

  I saw in the Configuration menu of the host, my ESXi host has only 77.3 MB. I think it's wrong, it's too little amount of memory dedicated to the host system. It is not a (Properties) button after I was able to change the amount of memory host system.

  Please, be so kind, help me!

  Thanks in advance!

  Welcome to the community,

  where do you see this amount of memory?

  The total amount of memory installed on the host can be seen in the summary, tab (resources) with the host country is selected in the inventory.

  André

• How to list, view, and edit the directories and files of ESXi 4.1 host?

  We are in transition to ESXi 4.1and I examination of the chnages will make managing hosts. We will use ot vMA and I have working for most things, but there are a few tasks I would like to be able to do that I can't understand.

  How to check a file system of the host. I would like to be able to browse, discover, and/or modify some files ESXi host. (for example/var/log) do not know what are the options I have for this with ESXi 4.1. Which of them, you can browse the file host system? Are there other ways?

  • vMA (can not know how to do this with vMA)
    
  • Browser such as https://ESXi host/file and https://ESXi Host/host (these only show data warehouses and select the conf/log files. are there other links to directories of home?)
    
  • Tech Support Mode (this seems to work, but I can not list directories/files. Seems that I need to know exactly where and what I'm looking for)
    
  • vSphere CLI remote
    

  vmksummary went with ESXi and vmkwarning/vmkernel are wrapped in messages.  You can get to spend / HA / agent logs via https vCenter / sharp (or other API methods.  We can create cron tasks, but that goes into the field of the non supported. You can set up syslog to push the message log file to a syslog or receiver to a location in the data store.

• VMotion with ESX and ESXi in the same cluster.

  My client wants to spend his whole army ESX 4.0 to ESXi 4.1 host. I know that it requires a clean install of the host. But vMotion always works in a cluster with a mix of the host ESX 4.0 and ESXi 4.1?

  You will be fine to have a mixed group of ESX and ESXi hosts.

  Dave

  VMware communities user moderator

  Now available - vSphere Quick Start Guide

  You have a system or a PCI with VMDirectPath?  Submit your specifications to Officieux VMDirectPath HCL.

• Pavilion dv4: Windows 7 does not start and I can't access the system with f11 recovery

  I use a Pavilion dv4. Windows just crashed on a blue screen with a message about physical memory dump. Now when I start the computer it will just a black screen with a blinking cursor to the place when windows normally should start. I can not access the system with the f11 key recovery. I went in with the f2 key diagnostic mode. Diagnostic tests except for the battery test that failed, but shouldn't the laptop to be able to run without a battery if it is connected? And besides, if the problem was the battery, the laptop wouldn't be able to turn on at all, no?

  I'm not about to spend all that money on a battery just to know that it is not the battery.

  Hello

  If you have the 64 bit rescue CD, you would have received an error if it was bad.

  Once you have all your data backup, try the following - which means that Windows has been installed on the C Partition.

  Boot from the new rescue CD, select repair your computer and choose the command line.  When this charge, enter the following commands and press on enter after everyone – including spaces as shown.

  Bootrec.exe

  bcdedit/export C:\BCD_Backup

  c:

  Boot CD

  BCD attrib s h - r

  Ren c:\boot\bcd BCD.old

  Bootrec /RebuildBcd

  Bootrec /fixmbr

  Bootrec /fixboot

  Remove the rescue CD and try to restart now.

  Kind regards

  DP - K

• Shared behavior of the virtual machine on the host system shutdown

  Shared behavior of the virtual machine on the host system shutdown

  Greetings,

  I installed WIn7 - 64 bit host system, WS8 and there seems to be a very nice and high quality configuration. I am very happy.

  There is a shared VM and it's a Setup 64-bit Ubuntu 10.04 Server functioning as a base configuration LAMP for some basic web applications, etc..

  I was unable to find the settings to control the behavior of the VM shared with the system that hosts stop. When I stop the host system, I believe that the common VM is off tension or stop gracefully, I don't know who. What I like best is for the shared VM will not apply instead. The reason is that starting the virtual machine is a bit complicated and requires manual intervention. Whereas, if it is stopped since a State suspended without manual intervention is necessary.

  I found that if there is a loss of power, I can hibernate the host system in time before my battery runs out. Resuming the host hibernate system works correctly and the VM shared within WS8 is back to its previous functional State.

  It would be nice and helpful being able to stop or restart the host system and know that the shared virtual machine has been automatically suspended. So now I have to log on to the user account from the host system and open WS8 and manually suspend the virtual machine before you stop or restart the host system.

  Is there a way to have the shared VM automatically suspended when the host system is stop?

  Thank you for your time and attention.

  You can configure the stop action by editing the following file:

  %ProgramData%\VMware\hostd\vmAutoStart.XML

  If you want to configure the action stop for all virtual machines, find the section of under the section. Change it on hold

  If you want to change the action stop for only this one machine virtual, you must first configure this shared VM to be started automatically (in WS, right-click on the item 'VMs shared' in the library, select "manage computers virtual auto-start '). After doing this, manually change the vmAutoStart.xml. Find the entry for the virtual machine in the section (if you have more than one computer configured to autostart virtual, it will take some more digging to understand what VM to change). Change the entry for this virtual machine to hang.

  Save the file. Reboot the host (not auto-start power actions are only made when the host is restarted). Now when stop you the host, WS should suspend the VM (s)

  As always, manually edit the configuration files is not considered supported its use. Save the file before you edit. Adjust at your own risk.

• [SOLVED] Help fixing 'file two systems with the same uuid were detected.

  I have a Setup ESXi embedded (installed on a USB key connected to the internal USB port) on a Dell T710 with few of the SAS drives.  I tried the upgrade to 4.0 - 294855 to 4.1 - 348481 by following the instructions here via:

  esxupdate--bundle=/vmfs/volumes/datastore_name/path/to/upgrade-from-esxi4.0-to-4.1-update01-348481.zip update

  Even if it is done correctly, when I restarted I got a purple screen with this message on this subject:

  The system has found a problem on your machine and cannot continue.

  Two systems with the same UUID files have been detected.  Make sure that you do not have two installations of ESXi.

  So, he tried to update one of the SAS drives internal versus inside USB key...?

  I studied this time before & found a threadwhere posted to help, but it wasn't enough to get me going.  Tonight, I found KB1035107 which details how to fix this, but I have a few concerns:

  • How can I identify the drive that has the invalid ESXi installation?
    
  • Better yet: How can I identify who / disc is the one with the ESXi installation I want to keep?
    
    • I know that I can use esxcfg-mpath-l., esxcfg-mpath-band esxcfg-scsidevs-l to collect the disk & LUN information.  But what happens if it wasn't a built-in installation?  If ESXi was installed on one of the SAS drives, how could I confirm which drive it actually installed on?
      
  • What is the worst that could happen with the performance he commands in the KB above?
    
    • Do I need to worry about migration whatever data is stored elsewhere there until I can get through this?
      

  Finally, and perhaps more important than these other issues:

  It is for me a way to specify which disk/drive/device to target when executing upgrades, more precisely from 4.0 to 4.1?

  How can I perform upgrades in the future without having to worry about this nonsense?  I don't want to have to disconnect from the LUN/warehouses of data whenever there is an upgrade (major or minor).

  
  Thank you very much.

  Did the HD with the data store show other partitions if your running fdisk-l?

• Poor ESXi 4 NFS Datastore Performance with various NAS systems

  Hello!

  In testing, I found that I get between a half and a quarter of the e/s inside a guest performance when ESXi 4 systems connect to the using NFS data store if the clients connect to the exact same NFS share.  However, I don't see this effect if the data store using iSCSI or local storage.  This has been reproduced with different systems running ESXi 4 and NAS systems.

  My test is very simple.  I created naked CentOS 5.4 minimum installation (completely updated 07/04/2010) with VMware Tools loaded and the creation time of a file of 256 MB using jj.  I create the file on the root (a VMDK stored in different data warehouses) partition or a directory of the NAS mounted via NFS, directly in the comments

  My crucial test configuration consists of a single test PC (Intel 3.0 GHz Core 2 Duo E8400 CPU with a single Intel 82567LM-3 Gigabit NC and 4 GB RAM) running ESXi 4 connected to a printer HP Procurve 1810 - 24 G, which is connected to a VIA EPIA M700 NAS system running OpenFiler 2.3 with two 1.5 to 7200 tr / MIN SATA disks configured in front of software RAID 1 and dual Gigabit Ethernet NIC.  However, I have reproduced it with different ESXi PC and NAS systems.

  This is a release of one of the tests.  In this case, the VMDK is a store of data stored on the NAS via NFS:

  -

  ---

  root@iridium /sync #; Sync; Sync; time {dd if = / dev/zero of = bs = 1 M count = test.txt 256 sync; sync; sync ;}}
  2560 records in
  2560 records out
  268435456 bytes (268 MB) copied, 0,524939 seconds, 511 MB/s
  Real 0m38.660s
  user 0m0.000s
  sys 0m0.566s
  root@iridium /# mount/mnt 172.28.19.16:/mnt/InternalRAID1/shares/VirtualMachines
  root@iridium /# cd/mnt
  synchronization of the # mnt root@iridium; Sync; Sync; time {dd if = / dev/zero of = bs = 1 M count = test.txt 256 sync; sync; sync ;}}
  2560 records in
  2560 records out
  268435456 bytes (268 MB) copied, 8,69747 seconds, 30.9 MB/s
  Real 0m9.060s
  user 0m0.001s
  sys 0m0.659s
  mnt root@iridium#.

  -

  ---

  The first dd is a VMDK stored in a connected via NFS data store.  The dd ends almost immediately, but the synchronization takes nearly 40 seconds!  It's less than 7 MB per second transfer rate: very slow.  Then I get the exact same NFS share that ESXi is used to store data directly in the comments and repeat the DD.  As you can see, the SD is longer and the synchronization takes no real time (as befits a NFS share with active sync), and the whole process takes less than 10 seconds: this is four times faster!

  I don't see these results on data warehouses mounted via NFS.  For example, here is a test on the guest even running from a mounted via iSCSI data store (using the exact same SIN):

  -

  ---

  root@iridium /sync #; Sync; Sync; time {dd if = / dev/zero of = bs = 1 M count = test.txt 256 sync; sync; sync ;}}
  2560 records in
  2560 records out
  268435456 bytes (268 MB) copied, 1,6913 seconds, 159 MB/s
  Real 0m7.745s
  user 0m0.000s
  sys 0m1.043s

  
  root@iridium /# mount/mnt 172.28.19.16:/mnt/InternalRAID1/shares/VirtualMachines
  root@iridium /# cd/mnt
  synchronization of the # mnt root@iridium; Sync; Sync; time {dd if = / dev/zero of = bs = 1 M count = test.txt 256 sync; sync; sync ;}}
  2560 records in
  2560 records out
  268435456 bytes (268 MB) copied, 8,66534 seconds, 31.0 MB/s
  Real 0m9.081s
  user 0m0.001s
  sys 0m0.794s
  mnt root@iridium#.

  -

  ---

  And the same comments linking internal SATA drive of the PC ESXi:

  -

  ---

  root@iridium /sync #; Sync; Sync; time {dd if = / dev/zero of = bs = 1 M count = test.txt 256 sync; sync; sync ;}}
  2560 records in
  2560 records out
  268435456 bytes (268 MB) copied, 6,77451 seconds, 39.6 Mbps
  Real 0m7.631s
  user 0m0.002s
  sys 0m0.751s
  root@iridium /# mount/mnt 172.28.19.16:/mnt/InternalRAID1/shares/VirtualMachines
  root@iridium /# cd/mnt
  synchronization of the # mnt root@iridium; Sync; Sync; time {dd if = / dev/zero of = bs = 1 M count = test.txt 256 sync; sync; sync ;}}
  2560 records in
  2560 records out
  268435456 bytes (268 MB) copied, 8,90374 seconds, 30.1 MB/s
  Real 0m9.208s
  user 0m0.001s
  sys 0m0.329s
  mnt root@iridium#.

  -

  ---

  As you can see, the performance of NFS direct comments for each of the three are very consistent.  ISCSI and the performance of the store local data disk are both a bit better than that - as I expect.  But the mounted via NFS data store gets only a fraction of the perfomance of the any of them.  Obviously, something is wrong.

  I was able to reproduce this effect with an Iomega Ix4 - 200 d as well.  The difference is not as dramatic, butalways important and consistent.  Here is a test of a guest of CentOS using a VMDK stored in a data store provided by an Ix4 - 200 d via NFS:-.

  root@palladium /sync #; Sync; Sync; time {dd if = / dev/zero of = bs = 1 M count = test.txt 256 sync; sync; sync ;}}
  2560 records in
  2560 records out
  268435456 bytes (268 MB) copied, 11,1253 seconds, 24.1 Mbps
  Real 0m18.350s
  user 0m0.006s
  sys 0m2.687s
  root@palladium /# mount/mnt 172.20.19.1:/nfs/VirtualMachines
  root@palladium /# cd/mnt
  synchronization of the # mnt root@Palladium; Sync; Sync; time {dd if = / dev/zero of = bs = 1 M count = test.txt 256 sync; sync; sync ;}}
  2560 records in
  2560 records out
  268435456 bytes (268 MB) copied, 9,91849 seconds, 27.1 MB/s
  Real 0m10.088s
  user 0m0.002s
  sys 0m2.147s root@palladium mnt-#.

  -

  ---

  Once more, the direct NFS mount gives very consistent results.  But using the diskette provided by ESXi on a mounted NFS datastore gives still worse results.  They are not as terrible as OpenFiler test results, but they are constantly between 60% and 100% longer.

  Why is this?  What I've read, NFS performace is supposed to be within a few percent of the iSCSI performance, and yet I see between 60% and 400% worse performance.  And this isn't a case of the SIN is not able to provide correct NFS performance.  When I connect to the NAS via NFS directly inside the guest, I see much better than when ESXi connects to the same NAS (the same proportion!) via NFS.

  The configuration of ESXi (network and network cards) is 100% stock.  There is no VLAN in place, etc., and ESXi system has only one

  Single Gigabit adapter.  It is certainly not optimal, but it doesn't seem to me to be able to explain why a virtualized guest is able to get a lot better performance NFS as ESXi itself to the same NAS.  After all, they both use the same exact suboptimal network configuration...

  Thank you very much for your help.  I would be grateful any idea or advice, you might be able to give me.

  Hi all

  It is very definitely a performance O_Sync problem. It is well known that NFS VMware shops still use O_Sync for writes little matter what share put for a default value. VMware uses a custom file locking system so you really can't compare it to a normal NFS share connection to a different NFS client.

  I have validated that the performance will be good if you have an SSD cache or storage target with enough reliable battery backup.

  http://blog.laspina.ca/ubiquitous/running-ZFS-over-NFS-as-a-VMware-store

  Kind regards

  Mike

  vExpert 2009

• Want J010dx m7: windows will not start until after full recovery of the system with new HARD drive

  Hello world

  I need help here.

  My HP envy m7 J010dx works perfectly with my original hard drive (1 TB).

  I am preparing a second HDD (NEW 320) as backup.

  I took off the Moose HDD (1 TB) and replace it with the NEW HARD drive (320GB) and try to do a full recovery of the system with the HP recovery DVD.

  After full system recovery and laptop computer needs to be restarted in order to continue, the laptop keeps restarting on the logo of windows 8.

  I think it says device not found Boot. Also a test using the UEFI tool material HP and all pass.

  Replacing the NEW HARD drive with the original of the old HARD drive and it start normally.

  What can go wrong here in this case? Thank you very much for the help.

  Concerning

  John

  OK, I read through the thread and this is my point of view on this based on works including restore process with the user created a recovery (UCRDs) media which the user indicated that they used.

  If you just want to jump to the conclusion at the bottom, you can see my opinion. If you want to know 'why' Please read the entire post.

  Model No.: m7-j010dx

  Product #: E0K83UA #ABA

  Ships OS: Windows 8 (64-bit)

  Recovery HP part No. Kit: 730336-002 (3 DVDs + extra)

  User replaced the HARD drive with a 1 TB hard drive 5400 RPM with HP ProtectSmart hard drive Protection a new hard drive is a Seagate Momentus 7200.4 ST9320423AS 320 GB 7200 RPM 16 MB Cache SATA 3.0 GB / s 2.5 "Notebook internal hard drive.

  With the help of UCRDs sent media recovery media (SSRDs):

  When the UCRDs are created, only the drivers for the HW operation (this is a critical point, that I will look later) are burned to the user created a recovery media.  Consider this a snapshot of the current HW, the base drivers and software applications.   If you change the HW on your laptop or desktop where the additional device requires a different driver for these features, a few questions you might - recovery process could stop because he can't find the right driver, a blue screen, a lack of start-up or other unstable system.

  A few years ago, I had a PC that would not recover because the Blu - ray (ODD) optical disk drive did not work.  I replaced the WEIRD Blu - ray with a generic DVD/CD burner into the new part of Blu - ray is presented.   I got the PC using SSRDs thinking I would put some time and just install the Blu - ray after the PC has been recovered.   The PC recovered and when the new Blu - ray showed I installed the unit and guess what?  All PCs have shown in Device Manager and applications was a generic ODD - no Blu - ray capability and ability to read Blu - ray content in the default HP provided for multimedia applications delivered with the PC.  Applications were there but no Blu - ray capability.

  Huh?  It looks that I did not put any time at all.

  I inserted the new Blu - ray ODD and distributed recovery with the HP SSRDs.

  After recovery, I had all the Blu - ray drivers and applications supported Blu - ray.

  The difference between UCRDs and SSRDs:

  UCRDs provide a glimpse of what is installed and functional both disks are created.

  Version Digest of the player on what is happening with SSRDs to retrieve a PC (before Windows 10):

  SSRDs have all the drivers for all the HW and SW qualified for the unit.  There may be several drivers for hard drives, different types/screen resolutions, sides, etc.  Based on the characteristics of the specific laptop / desktop a process is run called "Do / don't.   After entering the recovery SDRD, the Notebook media boots to Recovery Manager.  The first step is a raw copy of all the contents of the disc on a temporary partition.  Following the Do / do not process looks at the characteristics of this specific unit and remove all other drivers and applications not used by this device.  Drivers and the only successful applications are the features supported.   And then, the new operating system and recovery partition is created.   The PC end recovery of cleaning process and restart the laptop / desktop. And, Yes, you guessed it, if you create the user created a recovery media, you only have the drivers for HW devices and applications of HP on the PC at the time.

  So, that being said, what could be the cause/solution?

  Hard drives can be different enough so that a different driver (not the UCRDs) is necessary for the newly installed HW.

  The SSRDs are supported on the new HARD drive installed?

  I don't know, I have an office boy, and I have not tried on this model of laptop.

  If you have / acquire SSRDs, I recover the laptop with the new installed HARD drive and see if it works.  It may or may not.  I don't know what drives were qualified for this laptop.

  If this does not work, the last option is cloning via USB connection (old HARD drive in the PC, new HARD drive connected to a USB 3 via the SATA Adapter (dongle) USB port, install or download software cloning and cloning the old HDD to the new.)   I just did this on the two older Windows 7 computers laptops using a SanDisk Ultra kit.  He has worked on both units.

  Conclusion:

  I don't think that the problem is caused from a HARD drive of 1 to a 320 GB HARD drive, as it meets the minimum specs for a complete installation.  I think the problem is related to the use of UCRDs to retrieve and the UCRDs do not have the HARD driver/firmware/application disc.

  But then again, I know.

  I am an employee of HP...

• Recover the system with recovery disks

  I have a Pavilion Elite desktop computer. I tried to reset/recover my system with the recovery disks that I created when I bought the system. But I get the following messeage: "system recovery disks do not support this computer. You cannot restore this system with these discs. "GOOD, then I thought that my disks must be bad and ordered a set of HP. I come from them and tried again to restore my system... EVEN COMING? What's wrong? Need help.

  The recovery disk problems Troubleshooter need effects?

  There is another thing that you could do that provide the Windows key is always visible on your COA sticker.  Since it was a multi-configurable system you should know it was professional, Home Premium or ultimate edition. Please be aware that what I propose will not contain the goodies HP provided with recovery disks, you will need to reinstall all your programs and data.

  Go to this site and download the version of Windows 7 ISO which matches what you had initially and have your key ready.

  http://www.heidoc.NET/Joomla/technology-science/Microsoft/14-Windows-7-direct-download-links

  Once downloaded the file ISO, you can burn on a DVD using the Windows 7 DVD drive or another DVD burner you have:

  http://download.CNET.com/Windows-7-USB-DVD-download-tool/3000-18513_4-10972600.html

  See also this site for more information:

  http://www.microsoftstore.com/store/msusa/HTML/pbPage.Help_Win7_usbdvd_dwnTool

  Once downloaded and burned to DVD, use it to try to install Windows 7 on your computer.

• Windows system error: there is an IP address conflict with another system with the network. How do I remove this error message?

  I just installed a new internet provider and all of my connections are working fine, but I constantly get this "Windows system error: there is an IP address conflict with another system with the network." I have my electrician of the internet modem connected to my office. I have also two wireless devices connected to the appearance of the Modem wireless. I constantly get this error message mentioned above, and I want to get rid of it.

  This means that all that he says.  Your Windows system has an address that already exists on your local network.  Turn your system off and use a working system to locate this address and to which unit he belongs.  In most LANs, the router's DHCP server.  You may be able to ask the router which addresses are used and see what device uses this address, but I suspect not.

  Duplicate addresses can occur when two systems received the same address manually, or when we got an address in the DHCP of the router range. It is unclear when this happened because he is not in control of the address and puts the address duplicate to a second system.  You need to track down, ensuring that all addresses manually asigned are out of the DHCP range, that you book the address of the router, if you want the device to use this address, or configure all devices to request the address of the router using DHCP.

• I installed Windows Developer Preview and I need to double to boot my system with the previous version of Windows 7 that is already installed on my computer.

  How Dual boot my windows 8

  Hello
  I have recently installed windows 8 developer preview and I need to dual boot my system with the previous version of windows 7, which is already installed on my computer.please me how to Dual boot my system with windows7.i need both versions on my computer suggest.
  Please suggest me a way to dual boot

  Ask in the forum Windows Developer Preview:
  http://social.msdn.Microsoft.com/forums/en-us/windowsdeveloperpreviewgeneral

• Partition problem after the recovery of the system with a single key 6.0

  I need your help!

  My Lenova Ideapad Y430 not more start and I had to restore the system with the recovery CD I burned with a recovery key 6.0. The restore process showed no defects and no error has occurred.

  Now, after restaring the system I only 0 with a C: partition (all program files, vista, drivers etc.) 104 GB and the 'part of recovery for a key' 14.75 working. D: partition where all my documents, pictures etc. are stored are listed, but idle and not accessible nor editable with the tool Vista Diskmanagement.

  No idea what I can do?

  You can download EASEUS partition manager. It will help you to reformat the D drive.