I just replaced my motherboard, and now my Windows hard drive (secondary) seems not to be detected. I'm running Ubuntu 16.04 on my main hard drive and Windows 10 on my 2nd.
I installed Windows 7, which ate Ubuntu's boot file. When starting up the computer, it now goes straight to Windows, without giving me the option of booting Ubuntu.   How can I get Ubuntu back?
Help with Axis Placement when extruding I am just learning Blender. I am going through the .  The first part was good. I was able to follow it. Coming from SketchUp, it is taking some adjustment. But I am getting it.  I am just starting the second video. At the beginning, the instructor selects the top of the mug to extrude it. When he presses the E key and Enter, the red, green blue axis moves to the center of those vertices. That does not happen when I press the E key and Enter.   This is only 1:30 into the video.  How can I get the axis in the middle of this circle of vertices?  The next step is to scale. I need the reference point in the middle of this circle of vertices. I cannot left-click accurately enough to position the axis/reference point.  I am using 2.69. The video uses 2.64. Is it possible to perform a power analysis for the Kruskal-Wallis and Mann-Whitney U test? If yes, are there any R packages/functions that perform it? QGIS Align Rasters how to retain pixel values? I am attempting to align and then merge a number of rasters of the same resolution and extent, but where the pixels are slightly misaligned (creating small gaps when merged). This works fine using the Align Rasters tool, except that the pixel values are not retained and instead given a value of something like -3.23879e+8. I mostly want to keep the nodata pixels. Is this possible? Split a plane into smaller plane objects I just started using Blender and I'm trying to cut a plane in equal squares and have each square be its own separate object. My main goal is create the plane and add a displace and decimate modifier to create a low poly terrain. By cutting the plane in equal squares I'll be able to tile them in a 3D maze game I'm working on. If anyone know a better way to approach this it would also be greatly appreciated. What exactly is a bad backlink that is Disavow worthy? I have been reading Webmasters SE and many other blogs on this topic but I could not understand how do we truly evaluate a bad link that we must disavow in GWT. Everybody seem to have a different opinion on this.  A little background  I am a WordPress developer and 3 years ago I gave away a WordPress theme to my blog visitors which has a dofollow link back to my business website. Like this.  WordPress theme designed by &lt;a href="http://domain.com"&gt;MyBusinessName&lt;/a&gt;   From last 2 years I was not paying any attention on organic traffic to my business website because of other projects.  That free WordPress theme helped us getting ~10K backlinks from variety of domains and websites. All most 99% backlinks are from non-related websites and in many different languages.  Now  Last week it came to my attention that in October 2013, organic traffic from Google started decreasing and in just 2 months it became as low as 25% of October. Before October it was gradually increasing ~5-10% per month.  So I researched and draw to the conclusion that it could be because of Penguin Update. Since  was introduced at the same time.  Now I need information on what a bad/toxic link is.  I was about to disavow almost all links but after reading many topics on Webmasters SE I think I need more information on how to identify a bad link.   Does credit link in footer consider as spam because it build thousands of backlinks? Do foreign language website backlinks consider as spam? Should I remove all backlinks from theme users because almost all are from non-related content domains? Although some links from non-related content domains have nice DA/PA. Should I remove those too? I understand foreign language anchor text backlink could be a spam but what if it is from related foreign language content.   The question is how exactly one can find a link that is bad and must be removed. How can I access and process nested objects, arrays or JSON? bcmwl-kernel-source broken on kernel: 5.8.0-34-generic How does finder sort folders when they contain digits and characters? jQuery get the rendered height of an element? How do you get the rendered height of an element?  Let's say you have a &lt;div&gt; element with some content inside. This content inside is going to stretch the height of the &lt;div&gt;. How do you get the "rendered" height when you haven't explicitly set the height. Obviously, I tried:    var h = document.getElementById('someDiv').style.height;   Is there a trick for doing this? I am using jQuery if that helps. Randomly populating procedural shape (or Image Texture) in Cycles TL;DR  How to take a shape or Image Texture and multiply it with random Location, Rotation and Scale along object:    Background  I have created my first procedural shape on my own from this function: $(x^2 + y^2 - 1)^3 - x^2y^3 = 0$   (big yay for math idiot)   Here is the result:    And I want to do something useful with it.  Research  I've tried to find something similar over the web (this is trending right now) and I'm surprised that this question wasn't asked before or I'm looking with wrong terms. I've tried random pattern, duplicating texture, populating image, random tiles, custom tiles and such. There is a lot about tiling textures but each and every Q&amp;A I've stumbled upon are about non overlapping ones. For example:            Tryout:  The only way I can think of this is to duplicate shape as a group and manually change values in Mapping Nodes:    As you can see this is... Well. Bad.  I've tried messing with Modulo, mixing Noise between vectors, using custom node groups for LocRotScale (thanks Gandalf) but results was none, thus nothing even to show.  Question  I want to populate this shape (or any other) along the object with random Location, Rotation and Scale - with control over its number/density and maybe variation strength.  Edit: I'm not looking for alternative methods of creating this setup such as Particles, Image Textures generated in 3rd party software, OSL shaders (CPU only) and such. My intention is to use this in procedural texture generation in Cycles with GPU support.  Blend file  Nothing really needed for this question but here - have this heart from me :) Completeness and Incompleteness When has Wonder Woman died? I know Wonder Woman has died in canon before, but in which issue did this happen? How to make a safe in vanilla Minecraft that locks and unlocks with a key? How can I make a safe/vault or something to lock my door that is very easy (as I am not that advanced with redstone) to keep people out of my house? Without mods? Today is the release of Ubuntu 21.04 (Hirsute Hippo). And I can't update to this version. And also I selected ‘Notify me of a new Ubuntu version’ and changed it to ‘For any new version' on the Updates tab on Software &amp; Update, but it's still not working. In addition, in the terminal, I've written: sudo do-release-upgrade -c  And output was: Checking for a new Ubuntu release No new release found.  What should I do? Rendering an animation the way 3D view looks Is there some way to render exactly whats in the camera view in the 3D view? By that I mean just like a screenshot really, all paths, lamps, and cameras, just like things look in the camera view. The reason I can't just take a screenshot is that I need an animation and it would be too cumbersome to take 1000+ screenshots! Notation: What does the tilde below of the expectation mean? Password Reset for Users on a Multisite Subsite I have a multisite network. I want my users to be able to reset their passwords while staying within their subsites. So for example clicking the "lost your password?" link keeps them within their subdomain (subdomain.domain.com/wp-login.php?action=lostpassword) as opposed to taking them to the main site (domain.com/wp-login.php?action=lostpassword).  After they submit the username or email to reset the password, I would like for that email to contain links back to their subdomain and not the main site as is the default functionality.   Prior to the 4.0 update I was able to use this patch  and ultimately this plugin  to get the exact functionality described above. All was great.  However after the update it is no longer working. Asking for assistance in the various places referenced has still not helped solve the problem. Is anyone able to help? I wrote a script to create a big number of heat maps for a given scenario. I would like to save the result of every heat map as an PNG image. I have figured it out doing it with simple Map Rendering but the quality of the result is too low. Furthermore I would like to export to OpenLayers using the same code, which does not seem to be possible with simple rendering.   Now I am trying to do it with QgsComposition instead. Manually in the Map Composer you can just set the paper color to transparent and disable the background of the map canvas.   This is the code that I have so far. I just cannot figure out why it is not working. The result png-file always has a white opaque background.   My OS is Windows 7 and I'm using QGIS 2.6 Brighton.  I hope someone can help me out here.  # PARAMETERS mainPath = 'path/to/folder/' filename = 'filename' imageType = "png" imageWidth_mm = 400 imageHeight_mm = 160 dpi = 300  mapRenderer = iface.mapCanvas().mapRenderer()  c = QgsComposition(mapRenderer) c.setPlotStyle(QgsComposition.Print)  c.setPaperSize(400, 160)  x, y = 0, 0 w, h = c.paperWidth(), c.paperHeight() composerMap = QgsComposerMap(c, x ,y, w, h) c.addItem(composerMap)  # get all items and disable the backgrounds itemList = c.items() c.removeItem(itemList[2]) c.removeItem(itemList[2]) itemList[2].setBackgroundEnabled(False) itemList[3].setBackgroundEnabled(False) # add them to the composition c.addItem(itemList[2]) c.addItem(itemList[3])  c.refreshItems() c.refreshDataDefinedProperty(QgsComposerObject.AllProperties)  c.setPrintResolution(dpi) dpmm = dpi / 25.4 width = int(dpmm * c.paperWidth()) height = int(dpmm * c.paperHeight())  # create output image and initialize it # image = QImage(QSize(width, height), QImage.Format_ARGB32) image = QImage(QSize(width, height), QImage.Format_ARGB32_Premultiplied) image.setDotsPerMeterX(dpmm * 1000) image.setDotsPerMeterY(dpmm * 1000) #image.fill(0)  imagePainter = QPainter(image)  # This part does not seem to have any effect #brush = QBrush(Qt.BrushStyle(0)) # transparent brush # #imagePainter.setBackgroundMode(0) #c.setBackgroundBrush(brush)  c.renderPage( imagePainter, 0 ) imagePainter.end()   imageFilename =  mainPath + filename + '.' + imageType image.save(imageFilename, imageType) print 'image saved' print 'done' I'm using a flow to set a field to a certain value (01, 02, 03) depending on the value of another field on the same record. I initially wanted to do it with process builder but because of the mapping it seems I would need three 'criteria nodes' or a formula field. Furthermore, it seems Salesforce is recommending using flows instead of process builder for before update actions as it is faster.  The problem with Flows is that I found a way to trigger it when the record is new or updated but not when the specific field is changed so it triggers every time the whole record is updated even when the field stay the same.  On Process Builder, you can use isChanged and then call the flow with specific record but that kinds of defeat the point of using flows for before Update.  So is there a possibility to do the same thing directly in flow ?  Thank you for the help ! (weak) homotopy equivalence