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• How to create a zip file in the same format as the Finder's "Compress" menu item?

  - by benzado

  On Mac OS X, you can create a zip archive from the Finder by selecting some files and selecting "Compress" from the contextual menu or the File menu. Unfortunately, the resulting file is not identical to the archive created by the zip command (with the default options). This distinction matters to at least one service operated by Apple, which fails to accept archives created with the zip command. Having to create archives manually is preventing me from fully automating my release build process. How can I create a zip archive in the correct format within a shell script?

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• Python: How to write data in file in specific format?

  - by sasha

  i have an array called MAC1_Val: MAC1_Val array([ 1.00000000e+00, -1.00000000e+01, -2.06306600e+02, 2.22635749e+02, 1.00000000e+00, 1.00000000e+01, 1.00000000e+01, -2.06306600e+02, 2.22635749e+02, 0.00000000e+00, 0.00000000e+00, 0.00000000e+00, 0.00000000e+00, 0.00000000e+00, 0.00000000e+00, 0.00000000e+00, 0.00000000e+00, 0.00000000e+00, 0.00000000e+00, 0.00000000e+00, 0.00000000e+00, 0.00000000e+00, 0.00000000e+00, 0.00000000e+00, 0.00000000e+00, 0.00000000e+00, 1.00000000e+00, -1.08892735e+01, 1.88607749e+01, 1.03153300e+01, -1.78666757e+01, 3.33333333e-07, -3.33333333e-07, -4.21637021e-05, 4.21637021e-05, 9.98844400e-01, -1.73973001e-03, 1.20938900e-03, 1.87742948e-03, -3.33333333e-03, 6.66666667e-03, -3.33333333e-03, -2.64911064e-01, -2.60959501e+01, 2.81614422e+01, 3.33333333e-03, -6.66666667e-03, 3.33333333e-03, 0.00000000e+00, 0.00000000e+00]) and i want to write in file (.txt) values in specific format like this: 1.000000e+00 -1.000000e+01 -2.063066e+02 2.226357e+02 1.000000e+00 1.000000e+01 ....... note that are 6 digits behind floating point any suggestions how to do this? thanks in advance!

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• Keystore in PKCS12 format seems empty to keytool, but is read by Firefox?!

  - by hjh

  I have a problem with a keystore in pkcs12 format, which contains a private key I need to use to authenticate myself (using mutual authentication) to a remote SSL server. The keystore file can be read perfectly fine by Firefox, and when used, I can access the remote server without problems. However, my Java program does not work with the keystore file. And if I use keytool to list keys inside the file, it seems empty -- while it is clearly not! How can I get Java/keytool to see the private key inside the keystore?

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• How to represent a Many-To-Many relationship in XML or other simple file format?

  - by CSharperWithJava

  I have a list management appliaction that stores its data in a many-to-many relationship database. I.E. A note can be in any number of lists, and a list can have any number of notes. I also can export this data to and XML file and import it in another instance of my app for sharing lists between users. However, this is based on a legacy system where the list to note relationship was one-to-many (ideal for XML). Now a note that is in multiple lists is esentially split into two identical rows in the DB and all relation between them is lost. Question: How can I represent this many-to-many relationship in a simple, standard file format? (Preferably XML to maintain backwards compatibility)

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• How can I change the link format in will_paginate for page_cache in Ruby on Rails?

  - by jaehyun

  I want to use page_cache with will_paginate. There are good information on this page below. http://railsenvy.com/2007/2/28/rails-caching-tutorial#pagination http://railslab.newrelic.com/2009/02/05/episode-5-advanced-page-caching I wrote routes.rb looks like: map.connect '/products/page/:page', :controller => 'products', :action => 'index' But, links of url are not changed to '/products/page/:page' which are in will_paginate helper. They are still 'products?page=2' How can i change url format is in will_paginate?

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• All things equal what is the fastest way to output data to disk in C++?

  - by user260197

  I am running simulation code that is largely bound by CPU speed. I am not interested in pushing data in/out to a user interface, simply saving it to disk as it is computed. What would be the fastest solution that would reduce overhead? iostreams? printf? I have previously read that printf is faster. Will this depend on my code and is it impossible to get an answer without profiling? Edit: Output data needs to be in text format, whether tab or comma separated. This will require formatting, precision, etc. Running in Windows.

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• Why do so many mathematicians format code so poorly? [closed]

  - by marcog

  I have done a fair amount of programming together with mathematicians. Now I am even teaching some high school kids coming from a mathematics background how to program. Most of these people format their code so hideously it's hard to believe. I've even worked with and taught mathematicians who will fight the auto-indenter! Why is this so common amongst mathematicians? BTW, this is one reason I have started teaching Python. Yet still they find ways other than indentation to produce whacked coding styles!

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• What is the best to format messages for queueing?

  - by Tijmen

  I've been reading up on message queueing lately, and I'd like to implement a simple, extendable, system for my app. While there's a lot of good information on the subject of setting up a MQ system out there, I can't find a lot about the actual implementation. I'm looking for patterns and best practices on how to properly format messages for a queue, and ways to execute the jobs in PHP. Should I use JSON, serialized objects, text, URLs or XML? What information should I send? Is a worker with a switch($job['command']) {} (or something like that) the way to go, or are there any established patterns out there to implement a worker? Help greatly appreciated!

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• Making a video with opencv and ffmpeg. How to find the right color format?

  - by luc

  I have a webcam video recorder program built with python, opencv and ffmpeg It works ok except that the color of the video is more blue than the reality. The problem seems to come from color format of images. It seems that OpenCv is giving BGR images and ffmpeg+libx264 is expecting YUV420p. I've read that YUV420p correspond to YCbCr. opencv has no conversion from BGR to YCbCr. It only has a conversion to YCrCb. I have made some searchs and tried different alternatives to try converting opencv image to something that could be ok for ffmpeg+libx264. None is working. At this point, I am a bit lost and I would appreciate any pointer that could help me to fix this color issue.

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• How to convert all images to JPG format in PHP?

  - by SzamDev

  I am developing a website in PHP that let the user to upload images and then let him to decide how the image should be using jQuery - PHP integeration to select the area that wanted to be the picture and then click the crop button to crop it and save it. The problem that I am facing is that not all images type are good to crop and save so I noticed that the easy solution for it to convert the image to JPG and then let the user to crop it because it's the easy way to do it in JPG format. How I can do it? Is this the best solution for images types problem?

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• Returning a 1x1 .gif as a response in Rails

  - by Avishai

  Hi, I'm building a Rails app that does conversion tracking on outside sites. I'd like to allow users to paste an image tag in their conversion pages (like AdWords), and whenever that image is requested, a conversion registers in my app. respond_to do |format| if @conversion.save flash[:notice] = 'Conversion was successfully created.' format.html { redirect_to(@conversion) } format.xml { render :xml => @conversion, :status => :created, :location => @conversion } format.js { render :json => @conversion, :status => :created } format.gif { head :status => :ok } else format.html { render :action => "new" } format.xml { render :xml => @conversion.errors, :status => :unprocessable_entity } end end This way, the browser gets a non-existent .gif image. Is there a better way to do this?

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• C# - Common way to format listview controls on forms?

  - by John M

  In a C# Winform application (3.5) there are numerous forms each with different listview controls. While each listview control uses different datasets the basic formatting of each remains the same. Basic formatting takes this form: /* appearance */ this.lstA.View = View.Details; this.lstA.AllowColumnReorder = true; this.lstA.CheckBoxes = false; this.lstA.FullRowSelect = true; this.lstA.GridLines = false; this.lstA.Sorting = SortOrder.Ascending; What I would like to do is create a class that can be used to set the initial format of the listview. How do I pass the listview (by reference?) to the class so that the appearance properties can be set?

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• How to make web service methods return string value in lines format?

  - by Born To Learn

  How to make web service methods return string value in lines format? My web service method looks like this [WebMethod] public string GetSomeLines() { System.Text.StringBuilder builder = new StringBuilder(); builder.AppendLine("Line1."); builder.AppendLine("Line2."); builder.AppendLine("Line3."); return builder.ToString(); } But when I get the result from web browser or from delphi/c# consumer it will be like this: Line1. Line2. Line3. While I expect to see: Line1. Line2. Line3. I know may be returning a StringBuilder or String Array is an option here but I want to know if there is a way to make this with string result. Thanks for your help.

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• How can I format numbers as money in JavaScript?

  - by Daniel Magliola

  I would like to format a price in JavaScript. Basically, I have a float variable, and I'd like to have a function that will receive that variable, and output: "$ 2,500.00" What's the best way to do this? EDIT: OK, since I haven't gotten any answers better than the code I implemented, plus my own answer has been voted down and I can't put my own answer as the right one... Here it is... var DecimalSeparator = Number("1.2").toLocaleString().substr(1,1); var AmountWithCommas = Amount.toLocaleString(); var arParts = String(AmountWithCommas).split(DecimalSeparator); var intPart = arParts[0]; var decPart = (arParts.length > 1 ? arParts[1] : ''); decPart = (decPart + '00').substr(0,2); return '£ ' + intPart + DecimalSeparator + decPart;

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• how to remove error text from the email format checker code?

  - by rdesai

  I have been writing a code for validating forms using javascript/jquery. Following is a code snippet for checking email format. The problem is when I enter invalid email, it recognizes it, but when I go back to this field and enter correct email, the error text still stays even though I have used the 'else' part. How do I remove the error text in this case? if(e1.value!=''){ var emailRegEx = /^[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}$/i; if (document.signupForm.email1.value.search(emailRegEx) == -1) { $("#err_email1").html("Please enter valid email address."); } status=0; } else{ $("#err_email1").html(""); status=1; }

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• How to find out the format of a float?

  - by cannyboy

  I'm working with someone else's code, and there is a float with some unusual qualities. If I output the float using: NSLog(@"theFloat: %f", record.theFloat); I get: theFloat: 0.000000 However, if I use: NSLog(@"(int)theFloat = %i", (int) record.theFloat); I get: (int)theFloat: 71411232 How do I discover the real format and value of theFloat? I know that it should contain a large number. Incidentally, the Record class which contains the float propertizes it in such a way: @property (assign) float* theFloat; There is also floatLength: @property (assign) int floatLength; And has this method, which seems to indicate that the float is of variable length (?): - (void) copyFloat:(float*)theF ofLength:(int)len { float *floatcopy = malloc(len*sizeof(float)); memcpy(floatcopy, theF, len*sizeof(float)); self.theFloat = floatcopy; }

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• Can I pass an array as arguments to a method with variable arguments in Java?

  - by user352382

  I'd like to be able to create a function like: class A { private String extraVar; public String myFormat(String format, Object ... args){ return String.format(format, extraVar, args); } } The problem here is that args is treated as Object[] in the method myFormat, and thus is a single argument to String.format, while I'd like every single Object in args to be passed as a new argument. Since String.format is also a method with variable arguments, this should be possible. If this is not possible, is there a method like String.format(String format, Object[] args)? In that case I could prepend extraVar to args using a new array and pass it to that method.

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• Vista install works on one computer, but bluescreens another (on which Vista is known to work)

  - by Ken

  I hope my explanations make some sense -- please ask for clarification if they don't. I had a computer running Windows Vista (Ultimate, 64-bit). All was well! Then one day there was a nasty power surge at the office, and it died. (We didn't have surge protectors at the office, unfortunately. I assumed our lines were conditioned elsewhere, or was not an issue here. Oops.) After some testing, it was determined that the PSU, motherboard, and RAM were bad. While waiting for new hardware to arrive, I put my hard disk in a spare PC which had identical parts (mobo/CPU/RAM/PSU/video). Everything worked perfectly. The only way I could even tell it wasn't my computer is because Vista asked to re-activate itself with the new hardware, which worked fine, too. So the hard disk seems OK. Then the new parts arrived. The old motherboard model is no longer manufactured, so it's a new one with the same CPU/RAM/videocard/etc. slots. The PSU is also new, while the RAM I'm using is from the spare PC mentioned above. When I put it together and tried booting with my old hard disk, it starts to boot Windows, and then (fairly early in the process) gives a bluescreen and immediately reboots (so I can't see whatever the bluescreen is trying to tell me). I tried "safe mode", which also bluescreened. I tried booting the Vista DVD and running the repair utility, which found a Vista install, confirmed that it would not boot, and, eventually, declared that it was unable to repair it. I installed Vista fresh on a new hard disk, with the new mobo/etc., and it works perfectly. (That's what I'm running now.) I've also booted a Linux CD here, which ran great, and I've run Memtest86+ for a while, which found no errors. So all the hardware apart from the old hard disk seems OK, too. I don't think the problem is with my old Vista hard disk, since I used that with another mobo/CPU just fine. I don't think it's any other part of the new hardware, since I'm able to use it (and test it) with no trouble. It's just the combination of my old Vista install plus the new PC hardware that's not happy. I can get my data off my old hard disk and onto my new hard disk, and reinstall my apps, but it would be nice if I could fix things so I could continue to use my old hard disk as before. The latest hypothesis I've heard is that Vista had trouble with the new hardware (i.e., motherboard), but we have no idea what to do about that (except Safe Mode, which didn't work). Suggestions? Hypotheses for what's not right about this combination of Vista install and motherboard? Thanks!

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• What disk image should I use with VirtualBox, VDI, VMDK, VHD or HDD?

  - by Sorin Sbarnea

  Latest versions of VirtualBox supports several formats for virtual disks, but they forgot to provide a comparison between them. VDI VMDK VHD HDD Now, I am interested about a recommendation or comparison that considers the following: be able to use dynamic sizing be able to have snapshots be able to move my virtual machine to another OS or even another free virtualization solution with minimal effort (probably something that would run fine on Ubuntu). performance

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• Why can't I convert FLV to MP4 format using FFmpeg when MP3 works?

  - by hugemeow

  In fact I have succeeded to convert FLV to MP3: D:\tmp\ffmpeg-20121005-git-d9dfe9a-win64-static\ffmpeg-20121005-git-d9dfe9a-win 4-static\bin>ffmpeg.exe -i a.flv -acodec mp3 a.mp3 ffmpeg version N-45080-gd9dfe9a Copyright (c) 2000-2012 the FFmpeg developers built on Oct 5 2012 16:49:01 with gcc 4.7.1 (GCC) configuration: --enable-gpl --enable-version3 --disable-pthreads --enable-run ime-cpudetect --enable-avisynth --enable-bzlib --enable-frei0r --enable-libass -enable-libcelt --enable-libopencore-amrnb --enable-libopencore-amrwb --enable- ibfreetype --enable-libgsm --enable-libmp3lame --enable-libnut --enable-libopen peg --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libthe ra --enable-libutvideo --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-l bvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --en ble-zlib libavutil 51. 73.102 / 51. 73.102 libavcodec 54. 63.100 / 54. 63.100 libavformat 54. 29.105 / 54. 29.105 libavdevice 54. 3.100 / 54. 3.100 libavfilter 3. 19.102 / 3. 19.102 libswscale 2. 1.101 / 2. 1.101 libswresample 0. 16.100 / 0. 16.100 libpostproc 52. 1.100 / 52. 1.100 Input #0, flv, from 'a.flv': Metadata: metadatacreator : iku hasKeyframes : true hasVideo : true hasAudio : true hasMetadata : true canSeekToEnd : false datasize : 16906383 videosize : 14558526 audiosize : 2270465 lasttimestamp : 530 lastkeyframetimestamp: 529 lastkeyframelocation: 16893721 Duration: 00:08:49.73, start: 0.000000, bitrate: 255 kb/s Stream #0:0: Video: h264 (Main), yuv420p, 448x336 [SAR 1:1 DAR 4:3], 218 kb s, 15 tbr, 1k tbn, 30 tbc Stream #0:1: Audio: aac, 44100 Hz, stereo, s16, 32 kb/s File 'a.mp3' already exists. Overwrite ? [y/N] y Output #0, mp3, to 'a.mp3': Metadata: metadatacreator : iku hasKeyframes : true hasVideo : true hasAudio : true hasMetadata : true canSeekToEnd : false datasize : 16906383 videosize : 14558526 audiosize : 2270465 lasttimestamp : 530 lastkeyframetimestamp: 529 lastkeyframelocation: 16893721 TSSE : Lavf54.29.105 Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16 Stream mapping: Stream #0:1 -> #0:0 (aac -> libmp3lame) Press [q] to stop, [?] for help size= 8279kB time=00:08:49.78 bitrate= 128.0kbits/s video:0kB audio:8278kB subtitle:0 global headers:0kB muxing overhead 0.006842% But I failed to convert FLV to MP4. Why is the encoder 'mp4' unknown? What's more, how can I find the codecs which are already supported by my FFmpeg? D:\tmp\ffmpeg-20121005-git-d9dfe9a-win64-static\ffmpeg-20121005-git-d9dfe9a-win6 4-static\bin>ffmpeg.exe -i a.flv -acodec mp4 aa.mp4 ffmpeg version N-45080-gd9dfe9a Copyright (c) 2000-2012 the FFmpeg developers built on Oct 5 2012 16:49:01 with gcc 4.7.1 (GCC) configuration: --enable-gpl --enable-version3 --disable-pthreads --enable-runt ime-cpudetect --enable-avisynth --enable-bzlib --enable-frei0r --enable-libass - -enable-libcelt --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-l ibfreetype --enable-libgsm --enable-libmp3lame --enable-libnut --enable-libopenj peg --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheo ra --enable-libutvideo --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-li bvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --ena ble-zlib libavutil 51. 73.102 / 51. 73.102 libavcodec 54. 63.100 / 54. 63.100 libavformat 54. 29.105 / 54. 29.105 libavdevice 54. 3.100 / 54. 3.100 libavfilter 3. 19.102 / 3. 19.102 libswscale 2. 1.101 / 2. 1.101 libswresample 0. 16.100 / 0. 16.100 libpostproc 52. 1.100 / 52. 1.100 Input #0, flv, from 'a.flv': Metadata: metadatacreator : iku hasKeyframes : true hasVideo : true hasAudio : true hasMetadata : true canSeekToEnd : false datasize : 16906383 videosize : 14558526 audiosize : 2270465 lasttimestamp : 530 lastkeyframetimestamp: 529 lastkeyframelocation: 16893721 Duration: 00:08:49.73, start: 0.000000, bitrate: 255 kb/s Stream #0:0: Video: h264 (Main), yuv420p, 448x336 [SAR 1:1 DAR 4:3], 218 kb/ s, 15 tbr, 1k tbn, 30 tbc Stream #0:1: Audio: aac, 44100 Hz, stereo, s16, 32 kb/s Unknown encoder 'mp4'

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• Dell OpenManage Causing Periodic Slowness

  - by Zorlack

  Today we diagnosed the cause of a Periodic slowness issue: see here. Dell OpenManage Server Administrator seems to have been causing hourly slowness. It would occasionally peg one of the CPUs for upwards of two minutes. Disabling it drastically improved the performance of the SQL Server. The server hardware: Dell R710 Dual Quad Core 2.9GHz Processors 96GB Memory 2 Disk RAID 1 SAS System Disk (Internal) 4 Disk RAID 10 SAS Log Disk (Internal) 14 Disk RAID 10 SAS Data Disk (External DAS MD1000) Windows 2008 Enterprise R2 x64 We installed the OS using Dell OpenManage Server Assistant, so I assume that it was correctly configured. For now we have disabled OMSA to alleviate the performance issues it was causing, but I'd like to be able to re-enable it. Has anyone had a similar experience that can shed a little light on the nature of this problem?

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• How do I copy/clone a dynamic disk in Windows 7?

  - by PP

  I have some dynamic disks (or "partitions" but they are not really partitions) that I want to copy onto spare hard drives. I tried using gpartd (and fdisk for that matter) from a linux live disc. All it saw was hard drives with only one partition encasing the whole hard drive. So gpartd/fdisk is incapable of identifying the dynamic "partitions" and allowing me to copy them. Any tools that can be used to clone/copy a dynamic "partition"? (I'm open to commercial software suggestions if they can do the job).

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• Strange error when Bootcamp attempts to create partition for Windows

  - by mozillalives

  I get a strange error when I tell Bootcamp to create a partition for Windows. I get to the Create a Partition stage. I select 20GB for Windows leaving 91GB (39GB free) for OS X. I then click Partition and it gives me the following error The disk cannot be partitioned because some files cannot be moved. Back up the disk and use Disk Utility to format it as a single Mac OS Extended (Journaled) volume. Restore your information to the disk and try using Boot Camp Assistant again. My disk is formatted in Mac OS Extended (Journaled), I have closed all applications (besides Bootcamp Assistant) and I have even restarted and tried again to see if that might help. Nothing. I can't get it to partition. I also tried to create the partition using Disk Utility and I got the following error Partition failed Partition failed with the error: Could not modify partition map because filesystem verification failed Any ideas? BTW - I am running OS X 10.6.2

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• Copy File Contiguously to Disk from OSX/Unix/Linux to FAT32 FS?

  - by alharaka

  So the Sysinternals guys have that cool contig.exe utility that allows me ensure a file is contiguous. I need to copy overs ISO files to a FAT32 USB flash key. Grub4DOS requires the files be continuous, but I do not have Windows access at the moment. Is there a way to copy a file so it is contiguous on the target drive, or a tool like the aforementioned that will make an existing file contiguous. Again, I need it on FAT32, and there lies the rub.

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• How to update the hard disk device drivers for a ghosted hard drive image so it can run on different hardware: Ultra ATA > SATA

  - by rism

  I've ghosted a Winxp machine from one laptop with Ultra ATA drive, and would like to set it up on another laptop as a multiboot option on another hard driver with a SATA drive. I can install the partition fine but if i make it active and try to boot it it blue screens. The blue screen is so fast i cant even read it, other than to make out it's saying "something", im picking probably hard drive as it goes through POST fine. So basically i would like to boot into my Win7 OS, and then somehow manipulate the XP partition to use updated drivers for the new hard drive/laptop so that i can then at least boot into the XP OS on the new machine and update all the other drivers in safe mode or whatever to get it to run. I assume someone is going to tell me to just do a fresh install, but that kinda defeats the purpose of ghosting at this point. There is a significant amount of personalisation, development setup on the XP machine that i would like to just transfer as is. As it stands ive invested minmal time in getting it to run, just a ghost and recovery and then a blue screen boot or two, so its still well worth it to me, time wise to try this way. Thanks.

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