Windows 10 Boot Loader is neither found in BIOS nor in GRUB. Unable to boot on Windows My desktop contains two SSDs and one hard drive. One SSD has been installed with Windows 10. The installation went fine and I found the entry "windows boot loader" in BIOS.  After installing Ubuntu 16.04 on the 2nd SSD, I ran the command "sudo update-grub", but grub has failed to detect windows installation. Strangely after grub updating, "Windows-boot-loader" entry has disappeared from BIOS, however "boot override" (under save &amp; exit menu of BIOS) still shows "windows-boot-loader".  Now I could very well log into Ubuntu 16.04 but not on windows 10. i.e., my windows 10 has been missing simultaneously from both BIOS as well from GRUB.  I booted through USB Pen drive(windows installation), and went inside "windows SSD" through "repair" option and I found entire installation has been present and safe.  Note: both windows and Ubuntu have been installed in UEFI.  Right now I am unable to boot into Windows. I need help in restoring the missing windows boot entry. Thanks in advance.
Unable to boot into Windows after installing Ubuntu, how to fix? I installed Windows on my computer, followed by an installation of Ubuntu. However, now I'm unable to boot into my Windows install.  What can I do to fix this?
QGIS installation error How did this question get a 'linked' question that isn't mentioned in comments or answers? Looking at  which has been closed as a duplicate (quite right), we see three 'linked' questions in the sidebar; however, only two of those questions are given as duplicate-close-targets.  which to my mind is the actual 'exact duplicate', isn't mentioned anywhere else except in the 'linked questions' sidebar itself! The  says:  The Linked sidebar... gathers up any links to this question provided by the community via comments, answers, or questions  So how did  get into the linked questions sidebar of ? (There's no explicit link in the other direction, in case you were wondering.) Trigger to check for duplicate contacts on lead conversion I'd like to write a Lead trigger, to check for duplicate Contacts before inserting the lead, or converting it.   Contacts fields I'd like to check:   Firstname - should not be the same as the leads name Lastname - should not be the same as the leads name Email - should not be the same as the leads phone   After checking these fields &amp; failing to find a duplicate, only then should the lead be converted. Word for a temporary project name In software development, and I imagine in many other fields, we often make up temporary nicknames for new projects or features. These are not meant to be the real names for the end product and are often funny, playful, or sarcastic in nature. These are also not intended to be "codenames" that hide the nature of the project or feature. Is there a word for such nicknames? What software can I use to view epub documents? What software can I use to view .epub documents? Prove that $\mathbb{Q}$ belongs to the Borel $\sigma$-algebra of $\mathbb{R}$ Prove that the set of rational numbers $\mathbb{Q}$ belongs to the Borel $\sigma$-algebra of $\mathbb{R}$. I'm unsure about how to prove this. I'm also unsure about the difference between a σ-algebra and a Borel σ-algebra. Rounding integers to nearest multiple of 10 Using ArcGIS 10.0, is it possible to reorder the fields in a file geodatabase, and have the order persisted to the database?  We considered exporting to XML, and writing a parser to change the field order, then re-creating a new database from the XML. This seems like a laborious process.  Another idea is to import the existing field definitionss into Excel, re-order them, export to CSV, then write a Python script to create these fields in a new Geodatabase. Does a script like this exist, before we write it from scratch?  Unfortunately the ArcGIS Diagrammer doesn't seem to support field re-ordering.  Are there any scripts or hacks we could use to simplify this process? How does damage dealt increase as you level up Applications of ultrafilters I'm looking for some interesting applications of ultrafilters and also everything of interest involving ultrafilters. Do you know some applications or interesting things involving ultrafilters?  I'm at the beginning, so I'd prefer some applications that also a beginner could read. Does Google treat different ports as different sites? Insert HTML markup into Gmail signature Is there any way to add HTML markup signature in Gmail settings? I mean, insert some HTML markup without using rich editor, just inserting HTML? I'm creating a game where I have an Entity class that contains basic entity info (pos, health,..) and some functions. Enemies and Player later on inherit from this class.   Public class Entity {  public Vector2 position; public float health; ,...   Lets say that I have a function like this inside the Entity class:  public GameObject movingIntoEnemy(Vector2 movingToPoint) {     foreach (GameObject go in GameObject.Find("GameMap").GetComponent&lt;GameMap&gt;().enemyList)     {         if (go.GetComponent&lt;EnemyScript&gt;().enemy.position == movingToPoint)         {             return go;         }     }     return null; }   This function looks for a GameObject called "GameMap" and then cycles through enemies in it's list. If an enemy is found, it returns it's GameObject. Using GameObject.Find() is pretty ineffective, so what would be a better approach to this? I mean, I can't just easily use  public GameObject GameMap;   since the code is in a class, and this class needs to be instantiated first in my player/enemy scripts.  My question is - how do I attach gameObjects to this class before it is even created? What is the appropriate approach to this? I guess that I might pass these GameObjects to the class through it's constructor, but it would make things much more complicated.   Thanks in advance ;) When I compile the Python code below, I get      IndentationError: unindent does not match any outer indentation level     import sys  def Factorial(n): # Return factorial     result = 1     for i in range (1,n):         result = result * i     print "factorial is ",result     return result   Why? English equivalent for the Persian idiom "send someone out in pursuit of black chickpeas" "To send somebody out in pursuit of some black " is a Persian idiom that implies 'to make or ask someone to run an errand so that you be able to have/ buy some time in order to deal with your private affairs in their absence', like having or continuing a (secret) conversation with someone else.   According to its etymology, since 'black garbanzos/chickpeas' were rarely available in the markets, when someone wanted to buy them, they had to search many stores for a long time, and most of time they couldn't find them at all.   Today, its meaning has changed somehow, and it doesn't necessarily mean that we ask someone to run an impossible errand, but it means we use that errand as an excuse to send them away for a while just to have time to do something in their absence.   Example scenario:   Suppose your classmate has come to your house and you are talking about some girly issues in the sitting room. Now you want to tell her a big secret about one of your classmates, but not in the presence of your younger sister who is sitting there too. So you ask her to go to the market and buy some snacks for you. In this way, you will have some time to continue your conversation until she is back. So you might say to your friend:     Well, I sent my sister out in pursuit of some black chickpeas.  I'm sure that she won't be back for another 15 minutes, so we can talk more freely now."   And your sister, before leaving the house, might sarcastically say to you:     Okay, but I know this is just an excuse, and you are just sending me in pursuit of some black chickpeas!!! so don't think that you can fool me!   Is there any idiom, expression or proverb that conveys the same meaning or connotation in English (i.e. to make or ask someone to do an errand just in order to buy time so that you can deal with some of your private affairs)?   I have found to be/go on  but I'm not sure if I can use it or not. Similarity of real matrices over $\mathbb{C}$ $A  \underset{\mathbb{C}}{\sim} B \overset{\text{def}}{\iff} A=C^{-1}BC, \space C\in M_{n}(\mathbb{C})$ and similarly for $\underset{\mathbb{R}}{\sim}$.     I want to prove that $ A \underset{\mathbb{C}}{\sim} B$ for $A,B \in M_{n}(\mathbb{R})$ therefore $A \underset{\mathbb{R}}{\sim} B$.   My idea is that elementary divisors of $A,B$ over $\mathbb{C}$ are the same, and if $(x-z)^k$ is elementary divisor than $(x-\overline{z})^k$ is also elementary divisor $\implies$ $A,B$ have same elementary divisors over $\mathbb{R}$. But i think it's not clear. Insert missing dates within table I have a table with a column for ID, Date and Frequency of occurrence for that particular date and ID.  ID    date          Frequency 1     2014-05-18      5 1     2014-05-19      4 1     2014-05-20      25 2     2014-05-20      7 3     2014-05-18      4 3     2014-05-20      1 4     2014-05-18      6   I'm looking to insert the dates for each ID that aren't currently there (assuming that the date ranges from 2014-05-18 to 2014-05-20) and add a value of 0 in Frequency for those.  For example, you can see that  ID 1 has an observation for all three dates;  ID 2 is missing 2014-05-18 and 2014-05-19;   ID 3 is missing 2014-05-19;   ID 4 is missing 2014-05-19 and 2014-05-20.  Therefore, the output should look like this  ID    date          Frequency 1     2014-05-18      5 1     2014-05-19      4 1     2014-05-20      25 2     2014-05-18      0 2     2014-05-19      0 2     2014-05-20      7 3     2014-05-18      4 3     2014-05-19      0 3     2014-05-20      1 4     2014-05-18      6 4     2014-05-19      0 4     2014-05-20      0   I've attempted the following from . However, that will only add dates with 0 Frequency that aren't present throughout the entire table instead of on an ID level.   DECLARE @s DATE = '20140518', @e DATE = '20140520';  SELECT c.date, Frequency = COALESCE(a.Frequency,0) FROM dbo.Calendar AS c LEFT OUTER JOIN dbo.table AS a ON c.date = s.[date] WHERE c.d &gt;= @s AND c.d &lt; DATEADD(DAY, 1, @e); Universal type tranformer in Haskell I have some pairs of datasets (n=200 or thereabouts), of samples which are non-negative and not normally distributed. I think these pairs of variables are related, probably linearly.   Calculating Spearman's rank correlation on these datasets gives some strange results. The correlation coefficients show that the pairs of variables are weakly, positively correlated (e.g. rho of around 0.4), but the p-values are very low (e.g. 4.1e-10).  My vague understanding of this is that the variables are weakly, positively correlated but the probability of unrelated variables producing the same correlation is very low. Does this mean we can be reasonably certain that a positive correlation exists or have I misunderstood? Degree of minimum polynomial at most $n$ without Cayley-Hamilton?