The ext4 file system is always used for emmc storage devices. "Device" must be the path of the block device.
Emmc
An original eMMC block device is often used for bootable partitions, such as boot partitions and recovery partitions. Therefore, it is similar to mtd. EMMC has never been attached, but the mount point eMMc is used to searching for devices in the partition table.
Vfat
Vfat is a FAT file system used in Block devices. This usually refers to
Bios:
Basic input output system, typically stored in the BIOS chip on the motherboard
The BIOS is the first program that runs when the computer starts, checking the hardware and looking for bootable devices.
Bootable devices are defined in the BIOS settings, such as USB, CDROM, HD.
Mbr:
Size is 512 bytes,
After the BIOS finds the boota
1. Linux startup Process AnalysisThe boot process for the Linnux system is as follows:
Load BIOS hardware information and self-test, and obtain the first bootable device according to the setup;
Read and execute the boot loader (i.e. grub, spfdisk, etc.) of the MBR in the first boot device;
Loading kernel,kernel based on boot loader settings will start detecting hardware and loading drivers;
After the hardware driver succeeds, kern
storage devices are in the computer, we take the hard drive as an example, the BIOS will be based on the user's settings to obtain a bootable hard disk (or USB flash drive, disk. The BIOS can set the boot order) and go to the hard drive to read the first sector mbr location . MBR This only 446 bytes hard disk capacity will be placed in the most basic , when the BIOS becomes full, And the next is the MBR in the boot management program work. Thi
block in the first sector of the first bootable device, which contains the boot loader.
boot loader (boot loader): a software that can read kernel files to execute.
Kernel file: Begins the functionality of the operating system.
4. Primary boot partition (MBR) Bootloader (boot loader) is a set of software installed on the MBR of the operating system, this program is small and perfect. The main tasks of this boot loader are the followin
System startup processBIOS---->mbr:boot Code----> Execute bootstrapper GRUB (operating system bootstrapper)----> Load kernel----> perform init--->runlevelIn fact, when different systems start, the startup program is very similar1. BIOSThe basic input output system, which we refer to as the fundamental inputs and outputs, is generally stored in the BIOS chip on the motherboard.The first thing that runs when the computer starts is Bios,bios is responsible for checking the hardware and finding the
Global Section/*lilo Common configuration block */Append = "ether=eth0,0x280,10″/* Note that this is the parameter passed to the kernel, and we write it down here so that we can avoid the hassle of typing each time it starts up. */Boot =/dev/hda2/*lilo installed on the partition table on partition second of the hard drive 1 */Delay = 50/* Give the user the choice of which operating system to start the wait time */VGA = normal/* Monitor set to standard vga*/# RAMDisk = 0/* No virtual boot disk i
operationA toggle a bootable flag # toggle a bootable flagb Edit BSD Disklabel # b editing BSD diskC Toggle the DOS Compatibility flag # C Toggle DOS Compatibility flagD Delete a partition # D deletes a partitionL list known partition types # l list known partition typesM Print this menu # mn Add a new partition # N adds a fresh partitiono Create a new empty DOS partition Table # o creates a fresh null DOS
isolinux:image checksum error,sorry ... )--http://jingyan.baidu.com/article/3aed632e60c7817011809161.html1. We open the soft disk pass (Uitraiso) software, and insert the CD into the optical drive.2, because is the installation system disk, so we have to make the CD boot file (not the correct boot file made out of the ISO is not bootable), we choose "Start", "Extract boot files from CD/DVD".3. Select the optical drive of your computer system (confirm
partitioned and formatted. We can boot the system through bootable discs, such as the win98/me boot CD, or floppy disks with bootable features. If your system does not yet support this startup mode, go to the BIOS setup program and modify the first boot Device to either the ATAPI CD-ROM Drive (CD drive boot) or floppy Devices (floppy boot).
Use the Fdisk command to partition with CD or floppy boot system,
Windows XP has a much higher security performance than the previous Windows 9X, and we can protect our secrets by setting up a password for individual users, but what if we forget the login password one day? Is there no other way besides formatting the HDD reload system? Let's look for the secret to recovering Windows XP logins.
1. Create a bootable floppy disk to repair the user's password
Microsoft in Windows XP provides us with the ability to cre
Android Recovery display Chinese, the need for friends can refer to the next.First download Open source recovery source, address is https://github.com/xiaolu/android_bootable_recoveryInterface of the Chinese display part of the source code in the bootable/recovery/minui/directory, you can directly open-source Minui copy to your bootable/recovery source directoryThen change the
instructions t)
This wizard describes the basic installation steps and how to configure a professional PC Router to run MikroTik RouterOS ?.
Create a MikroTik RouterOS?
Description: how to download and install MikroTik RouterOS?
MikroTik RouterOS? Download and install is described in the following figure: 1. Download the Basic installation file.
* Do you want the media to install MikroTik RouterOS? Please select the following methods to download? ISO image? Install CD if you have another erasab
"simplified Chinese" software will be immediately converted to the simplified Chinese operation interface.
Next, nlite requires you to select the path of the operating system installation folder and click "Browse" to find the system installation CD folder you just copied,
Nlite detects the version of the operating system and other details.
Next, I will ask if there are any alternative solutions.
Next, nlite will let you choose the task to execute. The mandatory options are "Driver integrat
Address: http://blog.csdn.net/dwyane_zhang/article/details/8441854
Recently, we are working on a LCM two-screen or three-screen compatibility problem. Therefore, we must first read the IDs of each screen in uboot, and then pass the read IDs to recovery and kernel, display the machine properly.
I. First implement the uboot read LCM ID.
1. bootable/bootloader/lk/target/msm7627a_sku3_q6_d/rules. mk is the macro switch in uboot. Open the screen macro disp
, and converting disc image files. It allows you to directly edit ISO files, extract files and directories from ISO, or make a CD image from the CD-ROM or make the files on the hard disk into an ISO file;You can also process the startup information of the ISO file to create a bootable disc.With ultraiso, you can create, edit, and convert the disc image files as you like, and use the CD recording software to burn out the required CDs.Introduction to
Reprinted please identify Source: http://blog.csdn.net/zgh1988/article/details/7998054
1. You can create two types of projects in tornado environment: a bootable VxWorks image (bootable project) and downloadable application modules (downloadable project ).
2. Downloadable Projects
In the previous section, we have successfully run the Vxworks system, so we need to develop applications on this basis.
(1) crea
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