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• Configuring BitLocker on existing Windows Server 2008

  - by neildeadman

  On our file server, we want to enable BitLocker so that we can encrypt a single drive and I know that we have to also encrypt the drive the system is installed on. In my tests with VMs, I have to create a partition on the same disk as Windows is installed either before I install Windows or after (I can use the BitLocker Drive Preparation Tool). This tool shrinks the C: drive to make way for a 1.5GB partition. I'm a little concerned about doing this with a live system so wanted to see if it was possible to get BitLocker to use a partition on another drive?

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• new xp install, but it moves slow

  - by doug

  hi there I just installed new XP windows OS on a old laptop. I did also all the updates I was asked for. I installed also, the latest driver updates from the official laptop producer site. Now, when I try to use that laptop to talk on Yahoo! Messenger, the sound quality is very bad, and I barely hear what the other person is saying. Before I was reinstalling the XP the laptop were working fine. do you have any tips for me? What software utilities to try in order to improve it's performance? what software utilities to install in order to test it's performances?

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• HDD bad sectors with OS

  - by Michael Z

  I wonder is that possible for OS to make bad sectors on Hard Drive? Preface: I have bought new HDD on 1Tb WB Caviar Black. I have installed new OS on ext4 partition Ubuntu 12.04.1 LTS. After few days S.M.A.R.T. of the Ubuntu's Disk Utility show that my hard has bad sectors! I have checked on S.M.A.R.T. immediately after installing OS - all was OK. During new OS working I have noticed some strange with HDD - all OS was freezed from 20 sec to 1 min and I have heard like HDD's engine restarting. At the dmes I have found something like this: [40085.407947] ata1.00: device reported invalid CHS sector 0

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• ubuntu qcow2 image for local usage

  - by aisbaa

  I'm using kvm and I would like to run ubuntu server on it. My goal is to run db2 database instance for development. Is there ready to use ubuntu qcow2 images online for such purpose? Or should I install it from live cd? I've found this instruction UEC/Images, but at launch I get: $ kvm -fda ${floppy} -drive if=virtio,file=./disk.img -boot a ... Nothing to boot: No such file or directory (http://ipxe.org/...) No more network devices No bootable device. Solution: I havent found pre-installed ubuntu virtual machine image online, so solution is to install it by your self.

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• Where should I go to learn about networking? [closed]

  - by Ollie Saunders

  I wonder if anyone could recommend resource or resources such as a good book that: explains how all the important protocols work and interact. I’m interested in those that are relevant in a typical home network and used over the Internet explains in detail how ADSL Internet connections work to the level of depth necessary so that I’m able to tweak and measure performance settings starts from the beginning but attempts to provide proper understanding rather than idiot-oriented steps to follow Basically, I’m interested in how these technologies work and tend to be implemented in hardware and software rather than “here’s what to do if…” I’m interested in Computer Networking by Andrew S. Tanenbaum and I wonder if anyone else has any experience with that title. It’s expensive but I could probably loan a copy for £3 from the library or so.

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• Staggering java linux process startup to prevent OOM

  - by ctennis

  I am running a number of java processes on a single Linux machine. From a memory and computing standpoint, everything is fine when things are static. However, periodically we use a configuration management package up upgrade the jar or war files, and restart the java process. The problem is, that is restarts them all relatively quickly, and so we get 10 or so java VMs restarting all at the same time (we use daemontools for the service stops/starts), which wreaks havoc on the machine, in terms of OOMs or just really slow. This is because it's spawning the JVM 10x at the same time. Other than trying to stagger the startups, is there a smarter way of handling this? Maybe a sysctl tuning performance parameters, or a JVM parameter?

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• Looking for a good Web Server that is cheap

  - by SoLoGHoST

  I am a Project Manager, and former Lead Developer for a software portal system that requires a forum software to run. I am in need of a server that is cheap, reliable, and supports the latest PHP (5.2+), MySQL, unlimited e-mails (preferably), a cPanel, multiple sub-domains (atleast 3+). Currently I am paying $34.95 USD/month (approx. $420 USD/year). This is too high for me to pay to keep the site running. I just recently became Project Manager and in charge of Finances and I'm extremely concerned for the future of Dream Portal. With those prices I'm not sure I'll be able to keep it running for too long. Can someone please tell me of a good server that meets all of the requirements that I listed above that is cheaper on a yearly basis? Note: Currently on a Dedicated Server with limited disk space at 15000 MB (15 GB), monthly bandwidth = 500000 MB, 50 emails limit, 20 sub-domains limit, 30 FTP accts., and 25 SQL Databases.

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• Unix tool for splitting archives

  - by Richo

  I'm dumping an svn repository to a giant USB disk that is formatted FAT due to necessity (treat this as unchangeable). It conks out when you try to create a file larger than 4 gb. I need a tool that I can pipe data to that will create files of arbitrary size that when catted together will be the original file. I can write a tool to do this, but if one already exists I'd rather use it. Cheers EDIT: A second look at the split man page looks like it might work.

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• Cannot increase my screen resolution

  - by Patrick Beardmore

  I am trying to install my new monitor but my Graphics Adapter (Mobile Intel(R) 915GM/GMS,910GML Express Chipset Family) does not offer a resolution of 1920x1080 in the [Display Properties Settings] window. It only offers up to 1360x768. Can anyone explain to me how I can increase this number to the correct resolution. The monitor does show my the windows desktop, albeit at a lower resolution which is being stretched to fill the screen, making it look very blurry. I have installed the "Monitor Drivers" I found on the disk supplied with new monitor, but these do not appear to have made any difference. The Intel software that comes with the graphics card has an information window containing lots of info about the card and the monitor itself. I have placed this on a webpage so you can examine it if helpful. Many thanks with your help in getting my Christmas present to work! Patrick P.S.: Before I got this screen I checked to see if my graphics card could cope with such a large screen.

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• Routing Essentials

  - by zharvey

  I'm a programmer trying to fill a big hole in my understanding of networking basics. I've been reading a good book (Networking Bible by Sosinki) but I have been finding that there is a lot of "assumed" information contained, where terms/concepts are thrown at the reader without a proper introduction to them. I understand that a "route" is a path through a network. But I am struggling with visualizing some routing-based concepts. Namely: How do routes actually manifest themselves in the hardware? Are they just a list of IP addresses that get computed at the network layer, and then executed by the transport? What kind of data exists in a so-caleld routing table? Is a routing-table just the mechanism for holding these lists of IP address (read above)? What are the performance pros/cons for having a static route, as opposed to a dynamic route?

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• How do I tell if my firewire connection is running as 400 or 800?

  - by Tom

  I have a MacBook Pro with FireWire 800 and a freecom external harddrive that has USB3, FireWire 400 and 800. I am using a Nikkai FireWire 800 cable that has 800 connector on one end and a 400 connector on the other end. The 800 connector is attached to the MacBook pro and the 400 connector is attached to the freecom drive. Is there any way to tell what connection has been established? I looked at disk utility and it simply said 'FireWire'. Is there a command-line tool that would give more information? If it's 400, I plan to swap the cable for 800 connector at both ends.

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• How to mount remote sambe from local host with multiple groups ?

  - by Dragos

  I am using mount.cifs to mount a remote samba share (both client and server are Ubuntu server 8.04) like this: mount.cifs //sambaserver/samba /mountpath -o credentials=/path/.credentials,uid=someuser,gid=1000 `$ cat .credentials username=user password=password I mounted a user from local system with username and password with mount.cifs but the problem is that the user is part of multiple groups on the remote system and with mount.cifs I can only specify one gid. Is there a way to specify all the gids that the remote user has ? Is there a way to: 1) Mount the remote samba with multiple groups on the local system ? 2) Browse the mount from 1) with the terminal since I want to pass some files from samba as arguments to local programs. Other solutions would be: nautilus sftp:// which runs through gvfs but the newer gnome does not write to disk the ~/.gvfs anymore so I can't browse it in terminal. An the last solution would be nfs but that means that I have to synchronize the uids and gids on the local system with the ones from the server.

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• Outlook 2010: using signatures stored on network

  - by Gregory MOUSSAT

  With Outlook before the 2010 version, it was possible to specify any path for the signatures. With Outlook 2010, the only way is to use those stored into C:\Documents and Setting\UserName\Local Settings\Application Datas\Microsoft\Signature\ I'd like to point the signatures to a network share. Allowing us to modify the signatures into the share, instead of login on every computers each time we are asked to modify them (and this is quite often because the signatures contain logos about current events). We currently use a script to copy the signatures from the share to the local disk when users login. Question: How to set Outlook 2010 to use signatures outside of the default signature folder ?

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• Ubuntu on an XPS 14 Ultrabook with mSATA cache and 500GB HD - how to partition for dual boot?

  - by JDS

  I am getting an XPS 14 ( http://www.dell.com/us/p/xps-14-l421x/pd ) and I want to dual-boot Windows and Ubuntu. This thing has a 500GB standard HD and a 32GB mSATA that can be used as cache. Does anyone know how this thing is partitioned? Is the OS installed on the mSATA drive and data is on the big HD? Is there a BIOS controller or maybe even a Windows driver that makes the mSATA drive and 500GB HD appear contiguous? I get the impression that something makes the mSATA be used invisibly as cache, but I can't find any technical documentation how that works. My primary concern here is wrt dual-booting Ubuntu. I want to know if I need to partition the mSATA separately, or the big HD, or just partition the "magic" contiguous disk space that appears available to the OS.

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• mount fstab partition with public access

  - by Mikhail

  How do I specify that an fstab mount-point should be public? I want /mnt/windows to be accessible to normal users. I believe I am using ntfs-3g. If I set the /mnt/windows to 777 will it be publicly accessible without changing the permissions on the NTFS disk? /dev/sdb4 /mnt/windows ntfs noatime 0 1 /dev/sdb5 / ext4 noatime 0 1 UUID=5AA4-168D /boot/efi vfat defaults 0 1 and localhost my_computer # stat /mnt/windows/ File: '/mnt/windows/' Size: 12288 Blocks: 24 IO Block: 512 directory Device: 814h/2068d Inode: 5 Links: 1 Access: (0700/drwx------) Uid: ( 0/ root) Gid: ( 0/ root) Access: 2014-08-21 18:29:13.597722200 -0500 Modify: 2014-08-21 18:29:13.597722200 -0500 Change: 2014-08-21 18:29:13.597722200 -0500 Birth: -

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• I want to version control my entire slice

  - by Tom

  I'm renting a slice (i.e., a VPS) from Slicehost. I've a spent a day or two filling up /usr with my favorite packages, /etc with configs and init scripts, and so on. Now I want to: save this whole setup somewhere (e.g., to load onto another machine). see what changes I've made to which files revert changes, tag revisions, and all that other good version control stuff Saving a disk image gives me (1), but not (2) and (3). Using Subversion (svn import / svn://someotherhost) might give me all three, but I expect problems if I actually try to check a project out into / and maintain .svn directories in root-owned areas. And to load my setup onto a fresh slice, I'd need to install an svn client on it first. Is there a good way to do what I want to do?

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• I have to shard a mysql database. I want to start with 12 shards on 2 machines. What is the best w

  - by Tim

  All tables are InnoDb. I would rather not use mysqldump, because the shard sizes will be about 200 GB (about 700 million rows), and that will take too long. I was hoping to just stop mysql for an hour, copy the data files to a new machine, and start back up. But you can't do this with InnoDb, as some data is in the shared tablespace. Even if I have the innodb_file_per_table option set. This is not a website, but a custom application, used by tens of thousands right now, so uptime and performance are important. I suppose I could add logic into my server application to allow for gradual rebalancing / moving of a shard. Does anyone have a better idea?

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• DDRescue on Windows or another options like DDRescue for Windows

  - by Frank Thornton

  I have a drive with failed sectors ect... I can't image it with Acronis as it hangs. I can't with Knoppiz it hangs. CHKDSK hangs. I want to use DDRescure but I don't have any Linux boxes running at the moment. I could do is in a VM but that seems like it would be slow and problematic? Are there any ways I can data recovery this disk from my Windows machine or is there an ideal way to work with DDRescue on Windows?

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• how to restore grub

  - by takeshin

  During copying files via lan my Ubuntu Server 10.04 hung up and I had to reset the computer. After reboot, I got: Grub error 17, so I tried the rescue alternate CD, but I got a info, that no partitions were found on the disk. I used testdisk to restore the partitions. Using fdisk -l shows the partitions now, but when the system boots up I does nothing but displays: L234: When I plug the drive to another computer, it is not automatically mounted and I can't access the data. What to do now? How to restore the grub and boot up the system?

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• ISCSI: Ethernet cable maximum length vs. SCSI command timeout

  - by Jeremy Hajek

  I have a question about a non-optimal setup and the practical implications of this. Ideally you would place the ESXi server right in the same room as the FreeNas white box end of question. My situation is this: I have a run of ~125ft of Cat 5e connecting a ESXi server to a FreeNas whitebox in the server room. I know the distance of the ethernet cable is within the maximum distance for ethernet traffic but I have two questions... Can Cat 5e support gigbit speeds at that distance if the switch on the back end is a linksys SRW-2048? Should I be concerned about the distance causing data read and write timeouts in the SCSI portion--(disk operations of the ESXi)?

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• What happens when you add a Graphics card to a i7 with build in graphics (e.g. HD 4000)

  - by Matt

  I'm thinking of upgrading my computer from an AMD Phenom II X4 955BE with a AMD Radeon HD 6800 Graphics card (not integrated) to using a Intel Core i7 3770. As I have no knowledge of integrated graphics, my question is, what happens to the computing power when not using the HD4000 integrated graphics of the CPU (does it mean the CPU will run faster then it would if I relied on it?) Also what is better the CPUs inbuilt HD4000 or my Radeon Graphics card? I am mostly interested in terms of content creation: Using Adobe After Effects, 3D Rendering etc. Not too bothered about gaming performance. I will be using the spare parts of this build and older systems to make a second computer for network renders so what will be the advantages of keeping the Radeon with the current system for that?

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• Outlook items suddenly disapears from inbox after synchronization

  - by Jan Šotola

  We had some disk problems on Exchange server. We had to fix the Exchange 2007 using eseutil. Everything works fine excpet of following problem with one e-mail account: All inbox messages of mentioned e-mail account are fully accessible through the OWA. When any user creates new Outlook profile (using .OST mode) and starts synchronizing, all inbox messages are visible in the Outlook's inbox folder untill the Inbox synchronizing is completed. Once the synchronizing progress bar reaches 100% (and the Outlook starts synchronizing Sent items or another folder), most of messages disappears from the inbox view of the Outlook. The .OST file size does not reduce. New mails (delivered after Exchange server crash) remains all in the inbox. There is no special view or filter applied in the Outlook. The problem has been reproduced on two different computers (Vista+Office2007, Win7+Office2010). We assume there is some problem on the Exchange server but we don't know how to fix it. Can anybody give us some advice?

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• How to increase Remote Desktop resolution?

  - by BugAlert

  I'm using Windows 7 on a PC and connect to it via Remote Desktop Connection for Mac by MS, using a Mac. On the Mac, I have a 27" Display with 2560 x 1440 px resolution. The PC has a high performance graphics card (one of those that needs an additional power supply). Both machines are connected via network cable to a router. So network should be insanely fast. However, the max resolution I can get is 1400 x 1050. The PC just has a old and bad 21" monitor connected to it. How can I increase the resolution to 2560 x 1440 to work fullscreen with the Apple LED Cinema Display via Remote Desktop? Maybe I shouldn't even ask, because I already experience some lag at the low resolution of 1400 x 1050. But I guess this can be resolved as well?

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• remove disks or other media press any key to restart

  - by Sam I am

  I'm having an issue regarding a disk imaging process. I have a WinPE image that will re-partition, the hard drive, and put a boot-able image on it. When I run the imaging process from an initial state, I get the following error remove disks or other media press any key to restart If I run the process subsequent times, It will work as desired, but I'm still interested in getting the process to work the first time. How do I figure out what's going on here? what should I be looking at? I'm a little bit out of my depth here, I don't know what to do next

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• concrete uses of LDAP?

  - by ajsie

  im new to LDAP. i wonder what are some concrete examples of using LDAP. things that are MUCH more easier to do when you got 3-7 linux computers in a small company network. one use that is very important for me seems to be that you configure LDAP to handle system authentication. then you dont have to create same accounts in all computers. are there other things that are a MUST DO for a small network to save more time? my small network is for apache servers and database servers. and should LDAP be in an own machine? cause i guess its not good to put it in apache or database servers since these are performance dependent.

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