![]() The full details of the problem are described in Debian Security Advisory 4735. GRUB2 UEFI SecureBoot vulnerability - 'BootHole' Developers in Debian and elsewhere in the Linux community have recently become aware of a severe problem in the GRUB2 bootloader that allows a bad actor to completely circumvent UEFI Secure Boot.Look closely in its output because it could be a huge output. To do that, open the terminal and use the following command to list your partitions: sudo fdisk -l. Step 2: You need to find out iif your system uses EFI or BIOS. Step 1: Boot in to the live Linux USB. ![]() Copy and paste the UEFI Shell utility into the boot folder, and rename the file "boot圆4". Format a USB flash drive in FAT32, and create a folder named "EFI", and inside that, create another folder named "boot".
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