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• Windows 7 - cannot access my own external disk

  - by Tomas

  I use Windows 7 Home Premium and external USB disk with NTFS partition. I cannot write-access the my own files on it, even as a member of Admnistrators group! Is there any way how to go around this permission checking, without actually writing some permission information to every folder on it? I have 3 external disks (up to 1TB), and I have thousands hundreds of files on each!!! Doing some permission change, that will actually go recursivelly through all folders on all my disks is plain brain damage!! 1) Is there any way how to change it somehow globally? (like mount options...) .. Or how to go around this annoying permission checking? It was working in Win XP normally! 2) if not, and I must do the recursive operation on all folders, how to do it PERMANENTLY, so that I don't need to do it again on another Windows 7 computer!

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• Where can I find more information on "Kinds of Information Systems" [on hold]

  - by arielnmz

  Disclaimer: This is not a Power User question, but rather more of the Computer Enthusiasts kind. Also, I don't know the right site to post this kind of question. I'm writing a paper in which I am asked to mention and describe "5 types of information systems" to which my teacher explained: Like Web, Mobile, etc…, for example… He also said that we're not able to mention and describe those mentioned above. So the question is: What is the right topic to research or look into for more information about these different types of "information systems"?

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• SQLite DB borked when opened on a different machine

  - by pruefsumme

  Hello, I'm using SQLite to store some data. The primary database is on a NAS (Debian Lenny, 2.6.15, armv4l) since the NAS runs a script which updates the data every day. A typical "select * from tableX" looks like this: 2010-12-28|20|62.09|25170.0 2010-12-28|21|49.28|23305.7 2010-12-28|22|48.51|22051.1 2010-12-28|23|47.17|21809.9 When I copy the DB to my main computer (Mac OS X) and run the same SQL query, the output is: 2010-12-28|20|1.08115035175016e-160|25170.0 2010-12-28|21|2.39343503830763e-259|-9.25596535779558e+61 2010-12-28|22|-1.02951149572792e-86|1.90359837597183e+185 2010-12-28|23|-1.10707273937033e-234|-2.35343828462275e-185 The 3rd and 4th column have the type REAL. Interesting fact: When the numbers are integer (i.e. they end with ".0"), there is no difference between the two databases. In all other cases, the differences are ... hm ... surprising? I can't seem to find a pattern. If someone's got a clue - please share!

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• Why Can't Computers Off My Network See the Site?

  - by nmagerko

  Have just set up Apache, PHP, MySQL, etc. on my Ubuntu OS, and I was wondering why computers that are not on my network can not see the basic index.html that Apache uses as the default. I set up the static ip address for my computer, and I use 192.168.1.100 for computers to view the simple site. Is there something I am missing that will allow others to access my site? (It is REALLY simple; no graphics, CSS, etc.)

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• Weird files in User folder

  - by Vervious

  In my user folder (C:/Users/myAccount/) theres a set of interesting hidden files that I've never seen before (right now it's a fresh install of Windows 7 Ultimate). These are: NTUSER.DAT, ntuser.dat.LOG1, ntuser.dat.LOG2, and NTUSER.DAT(whole chain of numbers and letters).TM.bif, NTUSER.DAT(whole chain of numbers and letters).TMContaineretcetc.regtrans-ms, and another similar one. When I try to delete them, it says the system is using them. I've never seen these files before. Are they ok to delete? Or should I leave them in my home folder? I always keep "Show hidden files" as well as "Show System files" checked, since I prefer being able to see all the files on my computer. If I shouldn't delete them, is there at least a way to tidy them up a bit? Thanks.

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• How can a Virtualbox host connect to a guest VM when host wireless is disabled / host Ethernet cable is unplugged?

  - by uloBasEI

  I have a Virtualbox VM running on a computer connected to Internet via an Ethernet cable. The guest has a network adapter attached to a NAT. 2 ports (22 and 80) are forwarded so that the host can access them respectively on localhost:2222 and localhost:8080. When the Ethernet cable is plugged, both machine (host and guest) can access Internet and the host can access the SSH server/Webserver which ports are forwarded. When I unplug the Ethernet cable from the host, the host can not access the SSH server/Webserver of the guest anymore. Same situation with a Laptop connected to Internet via wireless when I disable the wireless adapter or set a wrong WPA key. My question is: is there a workaround for the host to access the guest services even if its Ethernet cable is unplugged / wireless is not available?

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• WDS (Wireless Distribution System) not work

  - by xdevel2000

  I've a dlink di-524 as main router (192.168.0.1) connected to Internet and a second router (192.168.0.2), a tplink wr841n, with WDS enabled and correctly configured to "join" with dlink. After I connect via wireless a laptop (192.168.0.100) to tplink and both work good but with the laptop I can't go to Internet. It seems as WDS not work. With the laptop I can only ping the tplink but other ping (the dlink or other LAN computer not responding). What's the problem? Perhaps also the dlink must have the WDS option? Thanks.

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• Web Site Monitoring/Tracking Freeware

  - by jsmith

  I need to be able to track Web Sites visited on a computer and send them to an email address on a daily basis. Keylogger software seems like too much, I want something lightweight that simply monitors websites visited and forwards them on. I was hoping for freeware, but if it's cheap/simple and easy to use I'm willing to pay. I know similar questions have been asked about website traffic monitoring, but it's not quite the same thing, and I can't seem to find an answer to this question anywhere. Thank you ahead of time.

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• OS X software updates download but don't install

  - by ridogi

  I've got three 10.6 computers that won't install OS X updates. Checking for new software will show about a dozen updates (Security updates, Safari, iPhoto, printers, etc) and if choose install it downloads them. After downloading and then clicking restart the computer sits at the purplish sky desktop with no progress bar, and then after about 3 minutes it goes back to the login window (without ever installing or restarting). If I then select check for updates the same updates will all be presented and I can repeat the process. Manually downloading and installing an update such as 10.6.8 combo updater works as it should, and then check for updates no longer presents that particular update as an option. This seems to be the result of some setting or 3rd party application as I've got 3 out 7 computers experiencing this exact same problem. What could cause this and how can I fix it?

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• Wallpapers of only some users being dynamically loaded in LightDM

  - by Kazark

  As this answer explains: Ubuntu 12.04 Unity greeter has introduced selected user dynamic background, that means that when selecting a user from the available users list the background will change to reflect the selected user's desktop background. However, I am puzzled, because in my experience this isn't consistently true. On one of my family members' computers, where there are three users, only one of the users' background shows in LightDM. None of the users are newly created. The user whose background is showing has a custom background; one of the users whose background doesn't show also does; and the other one who doesn't has the default switching wallpaper set. It is not a clean install but has been incrementally upgraded from about 8.04. Any idea what could be happening? This is a similar question, though we're also having the opposite problem (default wallpapers not showing). (I do not have access to the computer mentioend above at the moment; when I do I will use some of the criteria given there to analyze the problem further.)

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• Installing Windows from Ubuntu while booting only from the hard drive

  - by WindowsEscapist

  My problem is unrelated to this workaround (the question) here, but the end result is that I cannot change boot order (or use a boot menu) on my laptop. It is currently running Ubuntu 12.04 with a dual-boot to Fedora if anything goes catastrophically wrong with Ubuntu (read "if I mess it up"). I would really like to install Windows 7 (but XP would be fine) on an empty FAT32 partition I have already made because of issues with WINE-emulated programs running more slowly than under Windows. The problem is, I can only boot from my hard drive. I can boot from other devices by removing the hard drive, but this is irrelevant because SATA is non-hotpluggable (I can't plug it back in to install). Is there any way I could boot up a Windows installer CD (or other CDs)? (I know how to keep my Linux distros.) I have both the .iso's and the physical CDs (or can obtain them). This may be unneeded, but just as a disclaimer this is completely legal. The computer belongs to me, I have admin privs, etc. I'm not doing anything shady!

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• Getting into the details of game engine programming

  - by Darkslash

  I am interested in learning game programming, but I really have an interest in the lower level engineering in games. I have OpenGL experience, and I am really interested in learning more about implementing AI, Physics, etc. I have a computer science degree, so I really like getting into technical stuff. Many times when I ask about this sort of thing, I get a lot of "Use an engine", "Use Unity3d", "Why waste your time writing code that already exists", etc, etc. My idea was to use simpler libraries such as SFML or XNA so that I could learn how to implement the more complex systems. The thing is, although I do want to write games, I want to learn things that using something like Unity simply doesn't teach you. My goal is not to make a current generation quality 3D game to sell, I just want to make some cool smaller games and learn all I can about the programming side of game development. Is this something that people just do not do anymore? It seems like everywhere I turn people are using Unity or UDK or GameMaker. I fully understand why you would use a tool like these, but I cant see how they would suit my purposes. So where does someone like myself turn? Am I trying to learn something that people just do not bother doing anymore? Is the innovation in this area gone and just all about gameplay now? I'm sorry if this question seems silly, but I am genuinely interested in knowing more about this and meeting more people who are interested in this sort of thing.

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• Tool to launch a script driven by modem activity

  - by Will M

  Can anyone suggest a software tool (preferably under Windows XP or later) that would launch an application or script in response to a phone call being received on a landline phone line connected to a data modem on the same PC? or, better, in response to a sequence of touch-tones being played over such a phone line. This would allow, for example, using the telephone to manipulate firewall settings so as to create another layer of security in connection with remote internet access to that computer. I seem to recall seeing tools to do this sort of thing in the days before broadband internet access, when there was more attention to various tips and tricks for the dial-up modem, but a few attempts at Google hasn't turned anything up.

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• Keyboard glitches for some when Ctrl key is pressed

  - by user270716

  I'm having some problems with my keyboard, if I press the Ctrl key it glitches for some time. For example, if I press Ctrl and press Tab while it's still glitched the computer shuts down as if i pressed the Power On/Off button. If I press a it "presses" Alt, A and a symbol I can't remember, if I recall correctly it's a currency symbol. If I press Ctrl again it "presses" the ' key. I'm using Windows 8 Single Language 64 bits with a ABNT2 keyboard. The processor is a Intel Celeron G530 with 2 GB of RAM.

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• Ternary and Artificial Intelligence

  - by user2957844

  Not much of a programmer myself, however I have been thinking about the future of AI. If a fully functional AI is programmed in a binary environment as is used in current computing, would that create a bit of a black and white personality? As in just yes/no, on/off, 1/0? I will use the Skynet computer from the Terminator series as a bad analogy; it is brought online and comes to the conclusion that humanity should just be destroyed so the problem is resolved, basically its only options were; fire the missiles or not. (The films do not really go into what its moves would be after doing such a thing, but that goes into the realms of AI evolution so does not really fit with this question.) It may also have been badly programmed. Now, the human mind has been akin to a ternary system which allows our "out of the box" thinking along with all the other wonderful things our minds can do. So, would it not be more prudent to create a functional ternary system and program an AI using it so the resulting personality would be able to benefit from the third "maybe" (so to speak) option? I understand that in binary there are ways to get around the whole yes/no etc. way of things, however the basic operations are still just 1's and 0's. Again with using the above bad Skynet analogy; if it could have had that third "maybe" option as part of its core system, it may have decided to not launch due to being able to make sense of the intricacies of human nature and the politics of such a move etc. In effect, my question is; Would an AI benefit more from ternary computing as opposed to binary due to the inclusion of -1, or 2, dependent on the system ("maybe," as I call it)?

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• Approach to Authenticate Clients to TCP Server

  - by dab

  I'm writing a Server/Client application where clients will connect to the server. What I want to do, is make sure that the client connecting to the server is actually using my protocol and I can "trust" the data being sent from the client to the server. What I thought about doing is creating a sort of hash on the client's machine that follows a particular algorithm. What I did in a previous version was took their IP address, the client version, and a few other attributes of the client and sent it as a calculated hash to the server, who then took their IP, and the version of the protocol the client claimed to be using, and calculated that number to see if they matched. This works ok until you get clients that connect from within a router environment where their internal IP is different from their external IP. My fix for this was to pass the client's internal IP used to calculate this hash with the authentication protocol. My fear is this approach is not secure enough. Since I'm passing the data used to create the "auth hash". Here's an example of what I'm talking about: Client IP: 192.168.1.10, Version: 2.4.5.2 hash = 2*4*5*1 * (1+9+2) * (1+6+8) * (1) * (1+0) Client Connects to Server client sends: auth hash ip version Server calculates that info, and accepts or denies the hash. Before I go and come up with another algorithm to prove a client can provide data a server (or use this existing algorithm), I was wondering if there are any existing, proven, and secure systems out there for generating a hash that both sides can generate with general knowledge. The server won't know about the client until the very first connection is established. The protocol's intent is to manage a network of clients who will be contributing data to the server periodically. New clients will be added simply by connecting the client to the server and "registering" with the server. So a client connects to the server for the first time, and registers their info (mac address or some other kind of unique computer identifier), then when they connect again, the server will recognize that client as a previous person and associate them with their data in the database.

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• Name of my sql server instance from outside the network

  - by Michel

  Hi, normally i connect to my sql server instance from my local computer, and then the server name to connect to is the name of my laptop. So i can connect to server instance 'MichelLaptop' But now i'm trying to connect to my server from outside my network, and the first thing i wonder is: what is the name of the instance? i've made a redirect to my local machine in the DNS of my domain, so i said (this is not the real data) testsql.mydomain.com goes to 190.191.192.193 and when i ping testsql.mydomain.com, i get a response from 190.191.192.193 But what then is the server name?

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• ISA bus on newer computers

  - by Kevin Ivarsen

  Are there companies that sell new computers that support old ISA bus expansion cards? We have an aging computer running DOS that operates some machinery via an ISA interface board. Updated versions of this board (e.g. PCI, USB) are not available, and I am concerned about the long-term reliability of the 8+ year old computers we currently keep around as backups. If these newer ISA-capable machines exist, are there any general gotchas to be aware of in terms of compatibility with older expansion boards, ability to run DOS, etc.?

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• I need a script to lockdown the system time to users via gpedit.msc

  - by Chester

  I need to lockdown the system time on a number of PCs via gpedit.msc and then removing administrators from the group and then adding 'administrator' and 'polling'. Can I do this via a script? Essentially I have to; Run gpedit.msc Computer Configuration Windows Settings Security Settings Local Policies User Rights Assignment Double Click Change the system time Select Administrators Click Remove Click Add User or Group Type Administrator Click Check Names Type polling Click Check Names OK Apply OK Logoff I have to do this for a huge number of computers so is there a batch file I could run on each PC to do this? Your help would be very much appreciated. Best Regards

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• **Simplest** way to dual boot Linux on a Vista laptop

  - by user20285

  I have a 64bit Vista laptop with no cd drive (and no intention of buying one). What is the simplest way (if any) for me to dual boot Linux (I don't care what version as long as it's not too old...and will run Ruby 1.8.7 or greater)? I'd prefer anything with an installer. I've been programming on Windows for a little over 1.5 years and would like the option of using Linux. I'm not a moron, but the I'm legitimately scared of messing up my computer. I speak the language of Rails, not of OS tweaks. Thanks!

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• How to measure startup time and order of Windows services on boot?

  - by djangofan

  I am not asking how to measure server startup time here. I am wondering if anyone knows of a tool that can measure and show a graph of the startup time and order of all the windows services during system startup. I saw a software program shown on my local Portland news last week that does this but I am unable to remember what it was called or anything else about it. All I remember is that it was a "tech" news story to help computer users with their computers. So, I know the software exists and I am trying to find it.

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• Big Excel File Freezing/Running Slowly

  - by ktm5124

  Hi, My co-worker has a very large Excel file (over 7 MB) that suffers from the problems of (A) running slowly (B) taking forever to open/save/close and (C) freezing the computer, requiring a restart. I set the calculations to Manual, and I repaired the file, but the file didn't change in file size and it is still having these problems. My questions are: (1) Is there any way around this problem or is Excel just bad at handling ~7MB files? (2) Would upgrading RAM make a big difference? (3) It's possible that we can't afford to spend the money on a RAM upgrade. Are there are any other ways of mitigating the problem? Thanks.

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• Virtual bridge/switch for Windows server&client?

  - by Tiberiu-Ionu? Stan

  I can't find a very simple application, with litle to zero configuration on both client and server side which would help one computer to bring other computers on an existing private LAN. OpenVPN seems like an overkill for this type of thing, and is really hard to get running or debug by various clueless people trying to connect. Does such a software exist? It's very odd not to. THe Windows provided VPN (PPTP over TCP and GRE) is not what I'm looking for because it is often filtered by ISPs. Only TCP and UDP solutions pls. Encryption is not needed.

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• Where is the best place to teach myself a language, and which one?

  - by Lorinda

  Hello, I do not know any programming languages at all. I will self teach myself and need to know the best place to do so where I can learn from a most basic level. Where is a great place to begin learning a language? What language is best to learn first? Is it silly to learn Ruby first? Here, I came across someone saying that learning some of the higher languages can make you 'lazy' if you learn them first. Like Ruby amongst others. For my first language, my husband is advising me to learn Ruby (for his own personal interests). However, I need some independent advice of how to get started and what language I should learn first. I will eventually learn Ruby and then Rails. Four months ago, my husband ordered a text of objective C because he thought he would take it on. I flipped through and it was clearly starting at a place more advanced than where I am coming from. I have dabbled with a Ruby tutorial and I don't get it. I get what I am putting in is what I get, but I don't understand what is leading up to that. I need to know ALL the rules first. I then looked up computer languages and stared researching binary code which helped a lot, but not where I want to start. I don't have a lot of time right now in my life (with four kids) to go back that far. If I were going to school, that would be different. Any advice you could give is most welcomed.

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• Using Process Monitor to track registry changes

  - by CChriss

  It seems many people like using Process Monitor to see what changes are being made to the registry during a process. So I downloaded it. I want to see what changes are made in the registry by some config changes I'm making on my computer so I can write them into a vbs script to do them easily. Can someone tell me how to drive Process Monitor to capture the info? In the Help I don't see how to do it. I'm using Windows 7 home Premium 64 bit.

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