How to package a Linux system into an img image

img file:

Because cp, cat can only make an image from the device, but there is no special tool to make img files, so the dd command is used here to make img files.

1. Production. dd if=/dev/zero of= count=2880

ordd if=/dev/zero of= bs=1024 count=1440

2. Formatting.

3. Modification. You can use the following command mount to modify it directly.

You can use the following command mount to modify it directly.

mount -o loop *.img /mnt

4. Bootable.

Because a virtual machine will be used to make a bootable image, it is recommended to use virtualbox, and first go to the next DOS boot disk on the Internet to boot it. Pass the system with the sys command of dos. We recommend using FreeDOS, which is free software.

You can also use the dd command to pass the boot boot information and copy the files required for boot boot to make the boot disk. Take freedos as an example, pass the startup information with the following command, where the startup disk of ** is a file.

dd if= of= bs=512 count=1 conv=notrunc

grub4dos for multiple systems, 1), boot multiple systems with .

2) Install grub to MBR and use grldr to boot multiple systems. Of course, you can also use dd to write boot information directly in the same way as above.

floppy --chs 0x00

Note: I found out that the dd command can only start the copy from the logical sector, I thought if I could use dd to write to the U disk, I tried with my own U disk, but the result could not be opened. Because my USB flash drive is in FAT16 format,The logical sector starts with OBR,Then it's the FAT table,As a result, the FAT1 table was covered.,At that time, I didn't think there was FAT2 yet.,It's a grid.,Now I think about it.,A lot of things are gone.。

Why is it okay for a floppy disk, because it doesn't have the previous 63 sectors, starting directly from the logical 0 sector.

Compiling and playing the kernel is img.

The IMG ISO file is an image file, and it is sometimes necessary to make an image file in the operation of the Linux system, so what are the methods of making an image file? The following will introduce to you how to make a bootable IMG ISO file under Linux. How to create a bootable IMG ISO image file on Linux?

There are three ways to create an image file, cp, cat, dd and other special tools. CP, CAT and DD can all copy files from the device to create an image. The dd command is more powerful and can directly create an image by specifying the block size and number of blocks.

img file:

Because cp, cat can only make an image from the device, but there is no special tool to make img files, so Lu Bi uses the dd command here to make img files.

1. Production. dd if=/dev/zero of= count=2880

ordd if=/dev/zero of= bs=1024 count=1440

2. Formatting.

3. Modification. You can use the following command mount to pre-tremble, which can be directly modified.

mount -o loop *.img /mnt

4. Bootable.