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GPT磁盘与MBR磁盘区别!!!

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【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> 摘要： Windows 2008磁盘管理器中，在磁盘标签处右击鼠标，随磁盘属性的不同会出现“转换到动态磁盘”，“转换到基本磁盘”“转换成GPT磁盘”，“转换成MBR磁盘”等选项，在此做简单介绍。部分资料参照网络上的资源。基本磁盘与动态磁盘磁盘的使用方式可以分为两类：一类是“基本磁盘”。基本磁盘非常常见，我们平时使用的磁盘类型基本上都是“基本磁盘”。“基本磁盘”受26个英文字母的限制，也就是说磁盘的盘符只能是26个英文字母中的一个。因为A、B已经被软驱占用，实际上磁盘可用的盘符只有C～Z 24个。另外，在“基本磁盘”上只能建立四个主分区（注意是主分区，而不是扩展分区）；另一种磁盘类型是“动态磁盘”。“动态磁盘”不受26个英文字母的限制，它是用“卷”来命名的。“动态磁盘”的最大优点是可以将磁盘容量扩展到非邻近的磁盘空间。动态硬盘，是指在磁盘管理器中将本地硬盘升级得来的。动态磁盘与基本磁盘相比，最大的不同就是不再采用以前的分区方式，而是叫做卷集（Volume），卷集分为简单卷、跨区卷、带区卷、镜像卷、RAID-5 卷。基本磁盘和动态磁盘相比，有以下区别： 1、卷集或分区数量。动态磁盘在一个硬盘上可创建的卷集个数没有限制。而基本磁盘在一个硬盘上只能分最多四个主分区。 2、磁盘空间管理

Building UEFI driver using Visual Studio

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问题 I'm looking for advice on how to build UEFI drivers with the EDK2 SDK using a Visual Studio 2012 project. I'm trying to statically link UefiLib.lib but failing miserably. I've added the lib to the additional dependencies under linker. #include <Uefi.h> #include <Library/UefiLib.h> EFI_STATUS EFIAPI UefiMain ( IN EFI_HANDLE ImageHandle, IN EFI_SYSTEM_TABLE *SystemTable ) { Print((CHAR16 *)L"Welcome to the world of EDK II.\n"); return EFI_SUCCESS; } Error is test.obj : error LNK2001: unresolved

Reading/Writing EFI variables on Linux in kernel mode

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问题 I am working on Linux UEFI .I want to access the efi variables through my driver code. Currently I'm looking linux/efi.h API like efi.get_variable(). but I'm not getting how to call those APIs with from my driver code. struct efi efi1; efi_init(); efi_char16_t *name = (efi_char16_t *)"Boot001"; efi_guid_t *vendor = (efi_guid_t *)"8be4df61-93ca-11d2-aa0d-00e098032b8c"; u32 *attr = (u32 *)0x7; unsigned long data_size = 1024; void *data = NULL; printk("\n Showing efi info \n"); stat = efi1.get

Reading/Writing EFI variables on Linux in kernel mode

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Running an EFI application automatically on boot

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问题 I can build and manually execute an EFI application in a UEFI environment. But, I'd like to have my application executed automatically at boot time. Is there a way to tell the bootloader to do this or do I need to turn my application in to a driver to have it automatically executed? Is there maybe some entry in an FDF, DEC, DSC, or INF file I'm missing? 回答1: You can add a startup.nsh script file to your UEFI Shell boot drive that calls you application. The following link should serve as a

Reading/Writing EFI variables on Linux in kernel mode

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I am working on Linux UEFI .I want to access the efi variables through my driver code. Currently I'm looking linux/efi.h API like efi.get_variable(). but I'm not getting how to call those APIs with from my driver code. struct efi efi1; efi_init(); efi_char16_t *name = (efi_char16_t *)"Boot001"; efi_guid_t *vendor = (efi_guid_t *)"8be4df61-93ca-11d2-aa0d-00e098032b8c"; u32 *attr = (u32 *)0x7; unsigned long data_size = 1024; void *data = NULL; printk("\n Showing efi info \n"); stat = efi1.get_variable(name,vendor,attr,&data_size,data); with this code I'm getting NULL value for data. So can you

Running an EFI application automatically on boot

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I can build and manually execute an EFI application in a UEFI environment. But, I'd like to have my application executed automatically at boot time. Is there a way to tell the bootloader to do this or do I need to turn my application in to a driver to have it automatically executed? Is there maybe some entry in an FDF, DEC, DSC, or INF file I'm missing? You can add a startup.nsh script file to your UEFI Shell boot drive that calls you application. The following link should serve as a handy reference for working with scripts in the shell: UEFI Shells and Scripting . Look at section 3 (EFI Shell