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  • Restoring MBR, partition table, and boot sector of memory card without data loss ("USBC")

    - by Synetech
    Abstract I have a FAT32 memory card that when inserted into a computer causes Windows to prompt to format it. The card is definitely not supposed to be blank and has a bunch of files on it. Symptoms Using a hex-editor/disk-viewer, I examined the card and found that several sectors/clusters have been overwritten with something that has a signature of USBC at the start of the sector. Specifically, the master boot record (and partition table) is gone (hence Windows thinking the card is blank and needing to be formatted), as are the boot sectors (they have the USBC signature and a volume label of NO NAME and partition type of FAT32). Fortunately, it looks like both copies of the FAT are almost entirely intact (a few FAT entries at the start of a cluster here and there seem to be overwritten by USBC). The root directory is also nearly intact—I can see the volume label entry and subdirectory listings, but one sector is overwritten. (There are no more instances of USBC after the last one in the FAT2.) Hypothesis These observations seem to indicate some sort of virus that erases a few key filesystem structures, and then overwrites a few extra sectors here and there. Googling it seems to corroborate the idea of a virus, except that others report a file called USBC which does not apply here, and in fact, could not be possible since there is no filesystem to even see files. I cannot find any information about a virus with these symptoms, nor a removal tool. (I can't help but wonder if it is actually due to an autorun virus prevention tool.) Question I can likely fix the FAT corruption since they are mostly contiguous chains and maybe even the lost sector of the root directory, but does anyone know of a convenient way to restore or (re)create the MBR/partition table and boot sectors (without formatting or overwriting the data)?

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  • Set up layer 2 vlan between 2 data centres

    - by user41679
    Hello, Our data centre provider operates 2 sites, and we currently have equipment in one and would like to have equipment in the second. They've told me that they operate a layer 2 vlan between the 2 sites over a 20gbit connection, and that they'd just give me ethernet cable at each end to connect the locations. At the current site, we have Cisco 2960 48TC-L switches, all the machines are on a 192.168.x.x subnet and we have cisco firewalls with which we connect to our internet provider with. My question is what would I need to do to connect the 2 sites? could I just plug the ethernet cables the provide into the cisco switches, and have the same switches the other end? would I need to set up a separate internal network on the other side and connect both through the firewalls? Would the cisco switches need special configuration? We expect to maintain a number of connections between the 2 sites, and each site would have its own internal dns name like dc1.xx.com. Sorry if I'm being vague or haven't included enough information, I've a fairly good knowledge of hardware but we're down a netops guy at the moment and I'd like to get both sites on-line ASAP! Thanks in advance!

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  • OData to the rescue. Exposing the eventlog as a data feed

    - by cibrax
    In one of the project where I was working one, we used the Microsoft Enterprise Library Exception Application Block integration with WCF for logging all the technical issues on the services/backend in Windows Event Log. This application block worked like a charm, all the errors were correctly logged on the Event Log without even needing to modify the service code. However, we also needed to provide a quick way to expose all those events to the different system users so they could get access to all the them remotely. In just a couple of minutes I came up with a simple solution based on ADO.NET Data Services. ADO.NET data services is very powerful in this sense, you only need to provide a IQueryable implementation, and that’s all. You get a RESTful service with rich query support for free. In this sample, I used Linq to Objects to get the latest entries from the Event Log, and I also filter the entries by the category used by the Application Block to avoid loading unnecessary entries in memory. public class LogDataSource     {         string source;         public LogDataSource(string source)         {             this.source = source;         }         public LogDataSource()         {         }         public IQueryable<LogEntry> LogEntries         {             get { return GetEntries().AsQueryable().OrderBy(e => e.TimeGenerated); }         }         private IEnumerable<LogEntry> GetEntries()         {             var applicationLog = System.Diagnostics.EventLog.GetEventLogs().Where(e => e.Log == "Application")                 .FirstOrDefault();             var entries = new List<LogEntry>();             if (applicationLog != null)             {                 foreach (EventLogEntry entry in applicationLog.Entries)                 {                     if (source == null || entry.Source.Equals(source, StringComparison.InvariantCultureIgnoreCase))                     {                         entries.Add(new LogEntry                         {                             Category = entry.Category,                             EventID = entry.InstanceId,                             Message = entry.Message,                             TimeGenerated = entry.TimeGenerated,                             Source = entry.Source,                         });                     }                 }             }             return entries.OrderByDescending(e => e.TimeGenerated)                         .Take(200);         }     } LogEntry is class I created for this service to expose an Event Log Entry.     [EntityPropertyMappingAttribute("Source",         SyndicationItemProperty.Title,         SyndicationTextContentKind.Plaintext, true)]     [EntityPropertyMapping("Message",         SyndicationItemProperty.Summary,         SyndicationTextContentKind.Plaintext, true)]     [EntityPropertyMapping("TimeGenerated",         SyndicationItemProperty.Updated,         SyndicationTextContentKind.Plaintext, true)]     [DataServiceKey("EventID")]     public class LogEntry     {         public long EventID         {             get;             set;         }         public string Category         {             get;             set;         }         public string Message         {             get;             set;         }         public DateTime TimeGenerated         {             get;             set;         }         public string Source         {             get;             set;         }     } As you can see, I used the new feature “Friendly feeds” to map several properties in the entries with standard ATOM elements. The “DataServiceKey” is only necessary because I am using the Reflection Provider (the exposed IQueryable implementation is just Linq to Objects) rather than the default Entity Framework Provider. The data service implementation is also quite simple, just a couple of lines were needed to expose the data source created previously. public class LogDataService : DataService<LogDataSource>     {         public static void InitializeService(IDataServiceConfiguration config)         {             config.SetEntitySetAccessRule("*", EntitySetRights.AllRead);         }         protected override LogDataSource CreateDataSource()         {             string source = ConfigurationManager.AppSettings["EventLogSource"];             if (source == null)             {                 throw new ApplicationException("The EventLogSource appsetting is missing in the configuration file");             }             return new LogDataSource(source);         }     } With this implementation in place, the final users not only get a feed with all the latest errors in the event log, but also support for performing queries against that data. This is one of the great things about ADO.NET Data services.

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  • Visiting the Emtel Data Centre

    Back in February at the first event of the Emtel Knowledge Series (EKS) I spoke to various people at Emtel about their data centre here on the island. I was trying to see whether it would be possible to arrange a meeting over there for a selected group of our community members. Well, let's say it like this... My first approach wasn't that promising and far from successful but during the following months there were more and more occasions to get in touch with the "right" contact persons at Emtel to make it happen... Setting up an appointment and pre-requisites The major improvement came during a Boot Camp for Windows Phone 8.1 App development organised by Microsoft Indian Ocean Islands in cooperation with Emtel at the Emtel World, Ebene. Apart from learning bits and pieces regarding Universal Apps I took the opportunity to get in touch with Arvin Lockee, Sales Executive - Data, during our lunch break. And this really kicked off the whole procedure. Prior to get access to the Emtel data centre it is requested that you provide full name and National ID of anyone going to visit. Also, it should be noted that there was only a limited amount of seats available. Anyways, packed with this information I posted through the usual social media channels. Responses came in very quickly and based on First-come, first-serve (FCFS) principle I noted down the details and forwarded them to Emtel in order to fix a date and time for the visit. In preparation on our side, all attendees exchanged contact details and we organised transport options to go to the data centre in Arsenal. The day before and on the day of our meeting, Arvin send me a reminder to check whether everything is still confirmed and ready to go... Of course, it was! Arriving at the Emtel Data Centre As I'm coming from Flic En Flac towards the North, we agreed that I'm going to pick up a couple of young fellows near the old post office in Port Louis. All went well, except that Sean eventually might be living in another time zone compared to the rest of us. Anyway, after some extended stop we were complete and arrived just in time in Arsenal to meet and greet with Ish and Veer. Again, Emtel is taking access procedures to their data centre very serious and the gate stayed close until all our IDs had been noted and compared to the list of registered attendees. Despite having a good laugh at the mixture of old and new ID cards it was a straight-forward processing. The ward was very helpful and guided us to the waiting area at the entrance section of the building. Shortly after we were welcomed by Kamlesh Bokhoree, the Data Centre Officer. He gave us brief introduction into the rules and regulations during our visit, like no photography allowed, not touching the buttons, and following his instructions through the whole visit. Of course! Inside the data centre Next, he explained us the multi-factor authentication system using a combination of bio-metric data, like finger print reader, and "classic" pin panel. The Emtel data centre provides multiple services and next to co-location for your own hardware they also offer storage options for your backup and archive data in their massive, fire-resistant vault. Very impressive to get to know about the considerations that have been done in choosing the right location and how to set up the whole premises. It should also be noted that there is 24/7 CCTV surveillance inside and outside the buildings. Strengths of the Emtel TIER 3 Data Centre, Mauritius Finally, we were guided into the first server room. And wow, the whole setup is cleverly planned and outlined in the architecture. From the false floor and ceilings in order to provide optimum air flow, over to the separation of cold and hot aisles between the full-size server racks, and of course the monitored air conditions in order to analyse and watch changes in temperature, smoke detection and other parameters. And not surprisingly everything has been implemented in two independent circuits. There is a standardised classification for the construction and operation of data centres world-wide, and the Emtel's one has been designed to be a TIER 4 building but due to the lack of an alternative power supplier on the island it is officially registered as a TIER 3 compliant data centre. Maybe in the long run there might be a second supplier of energy next to CEB... time will tell. Luckily, the data centre is integrated into the National Fibre Optic Gigabit Ring and Emtel already connects internationally through diverse undersea cable routes like SAFE & LION/LION2 out of Mauritius and through several other providers for onwards connectivity. The data centre is part of the National Fibre Optic Gigabit Ring and has redundant internet connectivity onwards. Meanwhile, Arvin managed to join our little group of geeks and he supported Kamlesh in answering our technical questions regarding the capacities and general operation of the data centre. Visiting the NOC and its dedicated team of IT professionals was surely one of the visual highlights. Seeing their wall of screens to monitor any kind of activities on the data lines, the managed servers and the activity in and around the building was great. Even though I'm using a multi-head setup since years I cannot keep it up with that setup... ;-) But I got a couple of ideas on how to improve my work spaces here at the office. Clear advantages of hosting your e-commerce and mobile backends locally After the completely isolated NOC area we continued our Q&A session with Kamlesh and Arvin in the second server room which is dedictated to shared environments. On first thought it should be well-noted that there is lots of space for full-sized racks and therefore co-location of your own hardware. Actually, given the feedback that there will be upcoming changes in prices the facilities at the Emtel data centre are getting more and more competitive and interesting for local companies, especially small and medium enterprises. After seeing this world-class infrastructure available on the island, I'm already considering of moving one of my root servers abroad to be co-located here on the island. This would provide an improved user experience in terms of site performance and latency. This would be a good improvement, especially for upcoming e-commerce solutions for two of my local clients. Later on, we actually started the conversation of additional services that could be a catalyst for the local market in order to attract more small and medium companies to take the data centre into their evaluations regarding online activities. Until today Emtel does not provide virtualised server environments but there might be ongoing plans in the future to cover this field as well. Emtel is a mobile operator and internet connectivity provider in the first place, entering a market of managed and virtualised server infrastructures including capacities in terms of cloud storage and computing are rather new and there is a continuous learning curve at Emtel, too. You cannot just jump into a new market and see how it works out... And I appreciate Emtel's approach towards a solid fundament and then building new services on top of that. Emtel as a future one-stop-shop service provider for all your internet and telecommunications needs. Emtel's promotional video about their TIER 3 data centre in Arsenal, Mauritius More details are thoroughly described in Emtel's brochure of their data centre. Check out their PDF document here. Thanks for this opportunity Visiting and walking through the Emtel data centre for more than 2 hours was a great experience. As representative of the Mauritius Software Craftsmanship Community (MSCC) I would like to thank anyone at Emtel involved in the process of making it happen, and especially to Arvin Lockee and Kamlesh Bokhoree for their time and patience in explaining the infrastructure and answering all the endless questions from our members. Thank You!

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  • IMAP email migration from Apptix to Office 365

    - by npiani
    I am having issues setting up a migration from Apptix to Office 365 of 41 users in my company. I've found a couple guides on the Microsoft website about how to do it (Thank you Google) but I keep coming up with problems. I am trying to set up a mailbox migration through IMAP to get all of my users' emails over to Office 365 before we make the transition over from Apptix. One of the forums suggested using IMAP, since a CSV file can be uploaded to Office 365 and it will check for incoming mail for each user every 24 hours. My problem is that when I do this, I just get errors. The link I got was this: http://help.outlook.com/en-us/140/ms.exch.ecp.emailmigrationstatuslearnmore.aspx#imap I was wondering if anyone has successfully managed this transition. I'm using imap.apptixemail.net as the IMAP server (FQDN) Thank you for the help in advance. Any help or push in the right direction would be amazing

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  • Jquery data retrival returns null with json data

    - by user545520
    Hello Everyone, I have below sample json file: {"jsonData":{"REC":[{"TEST":"T","TEST1":"T1","TEST2":"T2"},{"R":"R","R1":"R1","R3":"R3"}], "DATA":{"FIRST":0,"SEC":1}}}. I want to retrieve data from json file,i am try like below,but it is giving null. from result object:i am retrieving data like below: to retrive the value T: this.jsonData.REC.TEST To retrieve the value R1: this.jsonData.DATA.FIRST Please correct me if i am doing any wrong. Thanks in Advance.

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  • Is information a subset of data?

    - by Jason Baker
    I apologize as I don't know whether this is more of a math question that belongs on mathoverflow or if it's a computer science question that belongs here. That said, I believe I understand the fundamental difference between data, information, and knowledge. My understanding is that information carries both data and meaning. One thing that I'm not clear on is whether information is data. Is information considered a special kind of data, or is it something completely different?

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  • Domain and TS migration

    - by Windex
    The migration steps outlined by Microsoft in the ts migration seem to deal with moving TS to a different server on the same domain and call for adding the licensing service to another system, move the licenses and then put TS on whatever server you want. However with migrating the domain as well I don't have any place to move the TS server to. So my thought was to simply re-activate my licenses on the new server using the same method as a new TS setup. My question is essentially will this work the way I think it will or will the MS activation clearing house deny the new server? Is there a procedure to follow that "deactivates" the licenses on a server so that the clearing house knows there are some free? (FWIW I can look up the license information through the eopen website and have access to the original license doc.)

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  • MySQL data type: Text,,, Erroring: Data Too Long

    - by nobosh
    I have a field as follows in MySQL: Type: Text Length: 0 Decimals: 0 And when I try to insert data around the size of 4 pages of MS Word, Coldfusion errors with: Data Too Long from the DB. I thought TEXT data type was able to expand and handle this size of data? What am I missing and what can I do?

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  • Data Access Layer - static list objects and caching

    - by Truegilly
    Hello, i am devloping a site using .net MVC i have a data access layer which basically consists of static list objects that are created from data within my database. The method that rebuilds this data first clears all the list objects. Once they are empty it then add the data. Here is an example of one of the lists im using. its a method which generates all the UK postcodes. there are about 50 methods similar to this in my application that return all sorts of information, such as towns, regions, members, emails etc. public static List<PostCode> AllPostCodes = new List<PostCode>(); when the rebuild method is called it first clears the list. ListPostCodes.AllPostCodes.Clear(); next it re-bulilds the data, by calling the GetAllPostCodes() method /// <summary> /// static method that returns all the UK postcodes /// </summary> public static void GetAllPostCodes() { using (fab_dataContextDataContext db = new fab_dataContextDataContext()) { IQueryable AllPostcodeData = from data in db.PostCodeTables select data; IDbCommand cmd = db.GetCommand(AllPostcodeData); SqlDataAdapter adapter = new SqlDataAdapter(); adapter.SelectCommand = (SqlCommand)cmd; DataSet dataSet = new DataSet(); cmd.Connection.Open(); adapter.FillSchema(dataSet, SchemaType.Source); adapter.Fill(dataSet); cmd.Connection.Close(); // crete the objects foreach (DataRow row in dataSet.Tables[0].Rows) { PostCode postcode = new PostCode(); postcode.ID = Convert.ToInt32(row["PostcodeID"]); postcode.Outcode = row["OutCode"].ToString(); postcode.Latitude = Convert.ToDouble(row["Latitude"]); postcode.Longitude = Convert.ToDouble(row["Longitude"]); postcode.TownID = Convert.ToInt32(row["TownID"]); AllPostCodes.Add(postcode); postcode = null; } } } The rebuild occurs every 1 hour. this ensures that every 1 hour the site will have fresh set of cached data. the issue ive got is that occasionally if during a rebuild, the server will be hit by a request and an exception is thrown. The exception is "Index was outside the bounds of the array." it is due to when a list is being cleared. ListPostCodes.AllPostCodes.Clear(); - // throws exception - although its not always in regard to this list. Once this exception is thrown application dies, All users are affected. I have to restart the server to fix it. i have 2 questions... If i utilise caching instead of static objects would this help ? Is there any way i can say "while the rebuild is taking place, wait for it to complete until accepting requests" any help is most appricaiated ;) truegilly

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  • Get value of "data"

    - by Nicole Loyal-Windham
    Hi, I need to figure out the value of data strings with jquery, for example like this: { label: "Beginner", data: 2}, { label: "Advanced", data: 12}, { label: "Expert", data: 22}, to add them up. Something like: var sum = data1+data2+data3; alert(sum); So the result for this example would be 36. Appreciate your help! Nicole

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  • jQuery loop through data() object

    - by bartclaeys
    Is it possible to loop through a data() object? Suppose this is my code: $('#mydiv').data('bar','lorem'); $('#mydiv').data('foo','ipsum'); $('#mydiv').data('cam','dolores'); How do I loop through this? Can each() be used for this?

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  • Prepopulate jQuery Data in html

    - by Mikael
    jQuery has the very cool feature/method ".data", i wonder if there is a way to have the data in the code so that jQuery can use it when the rendering of html is done. Suppose i have a repeater and looping out children, and i want to add some data to those children without using classes etc. Will i have to add javascript to that repeater just to add stuff to the "data of jquery" or is there some better way?

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  • Serializing persistent/functional data structures

    - by Rob
    Persistent data structures depend on the sharing of structure for efficiency. For an example, see here. How can I preserve the structure sharing when I serialize the data structures and write them to a file or database? If I just naively traverse the datastructures, I'll store the correct values, but I'll lose the structure sharing. I'd like to be able to save data-structures with shared components to a file, restore them, and still have most of the structure shared in the restored data.

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  • UPLOAD DATA IN DATA BASE

    - by rajson
    HI friends, i wish to store image and resume of user in the data base. i am using mysql data base and php5. i want to know that which field i set means data type.and how i set the range (maximum size) for uploaded data.

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  • How does Core Data work

    - by Jason
    Ive tried to gather information on as to how core data works, but can someone give me a clear explanation of all the stuff required...For instance NSDataContext, Fetchcontroller, NSDataModel, Presistent... Perhaps all the steps involved to get a data...Now I'm also unclear about an SQLite file, like how do we load the data into the core data , once we have created our entities etc.. Thanks

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  • Enterprise Data Quality - New and Improved on Oracle Technology Network

    - by Mala Narasimharajan
    Looking for Enterprise Data Quality technical and developer resources on your projects? Wondering where the best place is to go for finding the latest documentations, downloads and even code samples and libraries?  Check out the new and improved Oracle Technical Network pages for Oracle Enterprise Data Quality.  This section features developer forums as well for EDQ and Master Data Management so that you can connect with other technical professionals who have submitted concerns or posted tips and tricks and learn from them.  Here are the links to bookmark:    Oracle Technology Network website * NEW *   Installation Guide for Enterprise Data Quality Address Verification  Enterprise Data Quality Forum For more information on Oracle's software offerings for data quality and master data management visit:  http://www.oracle.com/us/products/applications/master-data-management/index.html http://www.oracle.com/us/products/middleware/data-integration/enterprise-data-quality/overview/index.html   

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  • Blank Cacti Graphs

    - by tortib
    I'm running Ubuntu 14.04 LTS and I'm having an issue with Cacti 0.8.8b not displaying any data in graphs. The graphs are being created and I see files in /var/lib/cacti/rra. My crontab entry for root is the following: */1 * * * * sudo -u www-data php -q /usr/share/cacti/site/poller.php > /dev/null The output of ls -la /var/lib/cacti/rra is the following: # ls -la /var/lib/cacti/rra/ total 1008 drwxrwx--- 2 www-data www-data 4096 Aug 20 19:27 . drwxr-xr-x 3 www-data www-data 4096 Aug 17 01:41 .. -rw-r--r-- 1 www-data www-data 47992 Aug 20 19:23 tortib_com_cpu_nice_34.rrd -rw-r--r-- 1 www-data www-data 47992 Aug 20 19:24 tortib_com_cpu_system_35.rrd -rw-rw-r-- 1 www-data www-data 47992 Aug 20 19:25 tortib_com_cpu_user_36.rrd -rw-r--r-- 1 www-data www-data 94816 Aug 20 19:27 tortib_com_hdd_used_43.rrd -rw-r--r-- 1 www-data www-data 94816 Aug 20 19:23 tortib_com_hdd_used_44.rrd -rw-r--r-- 1 www-data www-data 47992 Aug 20 19:27 tortib_com_load_15min_38.rrd -rw-r--r-- 1 www-data www-data 47992 Aug 20 19:26 tortib_com_load_1min_37.rrd -rw-r--r-- 1 www-data www-data 47992 Aug 20 19:23 tortib_com_load_5min_39.rrd -rw-r--r-- 1 www-data www-data 47992 Aug 20 19:24 tortib_com_mem_buffers_40.rrd -rw-rw-r-- 1 www-data www-data 47992 Aug 20 19:25 tortib_com_mem_cache_41.rrd -rw-r--r-- 1 www-data www-data 47992 Aug 20 19:26 tortib_com_mem_free_42.rrd -rw-r--r-- 1 www-data www-data 94816 Aug 20 19:24 tortib_com_traffic_in_45.rrd -rw-rw-r-- 1 www-data www-data 94816 Aug 20 19:25 tortib_com_traffic_in_46.rrd -rw-r--r-- 1 www-data www-data 94816 Aug 20 19:26 tortib_com_traffic_in_47.rrd -rw-r--r-- 1 www-data www-data 47992 Aug 20 19:27 tortib_com_users_48.rrd I tried to run the poller as root from the command line but it doesn't output anything useful nor does it graph any data. The device in cacti shows that that it's able to query snmp and ping is alive. The graphs are still empty though. snmpwalk 127.0.0.1 -v2c -c public works as it should. It walks all MIBs. I'm quite perplexed as to why this isn't working any longer. It was graphing data but then it just stopped. And when it was graphing data it was graphing it intermittently. Thank you for reading this problem and helping.

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  • Saving game data to server [on hold]

    - by Eugene Lim
    What's the best method to save the player's data to the server? Method to store the game saves Which one of the following method should I use ? Using a database structure(e.g.. mySQL) to store the game data as blobs? Using the server hard disk to store the saved game data as binary data files? Method to send saved game data to server What method should I use ? socketIO web socket a web-based scripting language to receive the game data as binary? for example, a php script to handle binary data and save it to file Meta-data I read that some games store saved game meta-data in database structures. What kind of meta data is useful to store?

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  • Web services, J2EE, Spring, DB integration project ideas - maybe data mining related?

    - by saral jain
    I am a graduate Computer Science student (Data Mining and Machine Learning) and have good exposure to core Java (3 years). I have read up on a bunch of stuff on the following topics: Design patterns, J2EE Web services (SOAP and REST), Spring, and Hibernate Java Concurrency - advanced features like Task and Executors. I would now like to do a project combining this stuff -- over my free time of course -- to get a better understanding of these things and to kind of make an end to end software (to learn the best design principles etc + SVN, maven). Any good project ideas would be really appreciated. I just want to build this stuff to learn, so I don't really mind re-inventing the wheel. Also, anything related to data mining would be an added bonus as it fits with my research but is absolutely not necessary since this project is more to learn to do large scale software development.

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  • TUI - Oracle Exadata V2 implementation

    - by rene.kundersma
    With this post a video recorded by Oracle Benelux. The message is coming from the Senior ICT manager of TUI The Netherlands. I had the pleasure that Oracle Consulting The Netherlands allowed me to do the design, the implementation and actual migration of this first Dutch Exadata success story. Rene Kundersma Oracle Technology Services the Netherlands

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