disk

How do I read a disk directly with .NET?

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Cool, thank you Mark, I had forgotten that CreateFile opens things too. I was looking at the volume management API and not seeing how to open things. Here is a little class that wraps things up. It might also be possible/correct to just pass the SafeFileHandle into a FileStream. using System; using System.Runtime.InteropServices; using System.IO; … Read more

How do I retrieve disk information in C#?

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For most information, you can use the DriveInfo class. using System; using System.IO; class Info { public static void Main() { DriveInfo[] drives = DriveInfo.GetDrives(); foreach (DriveInfo drive in drives) { //There are more attributes you can use. //Check the MSDN link for a complete example. Console.WriteLine(drive.Name); if (drive.IsReady) Console.WriteLine(drive.TotalSize); } } }

Manipulate an Archive in memory with PHP (without creating a temporary file on disk)

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I had the same problem but finally found a somewhat obscure solution and decided to share it here. I came accross the great zip.lib.php/unzip.lib.php scripts which come with phpmyadmin and are located in the “libraries” directory. Using zip.lib.php worked as a charm for me: require_once(LIBS_DIR . ‘zip.lib.php’); … //create the zip $zip = new zipfile(); … Read more

How much faster is the memory usually than the disk?

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I’m surprised: Figure 3 in the middle of this article, The Pathologies of Big Data, says that memory is only about 6 times faster when you’re doing sequential access (350 Mvalues/sec for memory compared with 58 Mvalues/sec for disk); but it’s about 100,000 times faster when you’re doing random access.