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boot.img是grub启动的第一个程序,之前我们介绍过MBR分区表在首个扇区512字节中,前446个字节是bootloader程序,这部分其实就是boot.img 因为BIOS bootloader的第一部分最大为446字节,这块空间的大小极大的限制了boot.img程序的功能,所以它无法理解文件系统,core.img的位置是硬编码在boot.img中的。boot.img中唯一做的...
--bootloader-id=ID the ID of bootloader. This option is only available on EFI. --efi-directory=DIR use DIR as the EFI System Partition root.INSTALL_DEVICE must be system device filename.grub2-install copies GRUB images into /boot/grub2, and uses grub-setupto install grub into the boot...
NOTE: This installation option will automatically install the Linux bootloader to the first hard drive on the system. That is typically how most people install and the Linux boot loader offers the choice of booting any other operating systems that are on your computer. However, if your intent ...
GRUB2_INSTALL_DEVICES="/dev/vda" ### write the rescue initramfs to USB and update the USB bootloader OUTPUT=ISO ### create a backup using the internal NETFS method, using 'tar' BACKUP=NETFS ### write both rescue image and backup to the device labeled REAR-000 BACKUP_URL=usb:///dev...
After upgrading the system from RHEL6 to RHEL7 usingredhat-upgrade-tooltool, it's not possible to replace the Grub bootloader with Grub2 due to getting the following error message Raw # grub2-install /dev/sda Installing for i386-pc platform. grub2-install: warning: your embedding area is ...
--boot-directory=DIR install GRUB images under the directory DIR/grub instead of the boot/grub directory --bootloader-id=ID the ID of bootloader. This option is only available on EFI and Macs. --core-compress=xz|none|auto choose the compression to use for core image --disk-module=模块 ...
Proceed with the installation, including setting up partitions as needed. The installer should automatically configure the bootloader (GRUB) to recognize both Linux and Windows. 8. Re-enable the Windows Drive: After the installation is complete, reboot ...
--boot-directory=DIR install GRUB images under the directory DIR/grub instead of the boot/grub directory --bootloader-id=ID the ID of bootloader. This option is only available on EFI and Macs. --core-compress=xz|none|auto choose the compression to use for core image --disk-module=MODULE...
After POST, the BIOS loads and executes theMBR (Master Boot Record)containingthe GRUB 2 bootloader, which eventually brings up the kernel. The kernel initializes the devices and their drivers and mounts the primary filesystem. It then starts theinitprocess, which sets the remainder of the syste...