From: jayjwa@atr2.ath.cx.invalid   
      
   root  writes:   
      
   > Henrik, do you format the EFI partition as vfat before starting   
   > the install? As far as I can remember I never did that.   
   Many machines will have an EFI service partition on them when you get   
   them. I don't recall having to make one because this system had Windows   
   on it previously. If there is not one, or it gets erased, you can   
   recreate it. It needs be a FAT32 system. To my memory, the partition   
   type has to be "EF" and the partition table should be type GPT.   
      
   fdisk -l /dev/sda   
      
   Disk /dev/sda: 931.51 GiB, 1000204886016 bytes, 1953525168 sectors   
   Disk model: WDC WD10EZEX-08W   
   Units: sectors of 1 * 512 = 512 bytes   
   Sector size (logical/physical): 512 bytes / 4096 bytes   
   I/O size (minimum/optimal): 4096 bytes / 4096 bytes   
   Disklabel type: gpt   
   Disk identifier: 5ADB41A7-7604-419D-A43A-4F9135D120E8   
      
   Device          Start        End    Sectors  Size Type   
   /dev/sda1        2048     534527     532480  260M EFI System   
   /dev/sda2      534528 1049110527 1048576000  500G Linux filesystem   
   /dev/sda3  1049110528 1468540927  419430400  200G Linux filesystem   
   /dev/sda4  1468540928 1887971327  419430400  200G Linux filesystem   
   /dev/sda5  1887971328 1953525134   65553807 31.3G Linux swap   
      
   lsblk -f   
   NAME   FSTYPE FSVER LABEL  UUID                                 FSAVAIL FSUSE%   
   MOUNTPOINTS   
   sda   
   ├─sda1 vfat   FAT32 SYSTEM 608B-0B83                               
   238.6M     7% /boot/efi   
   ├─sda2 ext4   1.0          2b909491-fbe9-4301-b583-913820597d92    265G      
   41% /   
   ├─sda3 xfs                 60c59f42-a1f1-46c2-bf8e-d9af83c303ce   67.5G      
   66% /home   
   ├─sda4 xfs                 7aa264bd-a6fa-450b-a21d-c255c8c14964    
   193.7G     3% /srv   
   └─sda5 swap   1            6f331c1c-da54-4c02-93fb-dad38ee61   
   d2                [SWAP]   
   sr0   
   zram0   
   [SWAP]   
      
   I'm using Current with Grub. Previously I used Elilo, but it stopped   
   booting kernels about version 6.1.x or so. Elilo needs the kernel with   
   it in the ESP, Grub can "see" into the Linux partitions to grab the   
   kernel so it doesn't require the kernel with the bootloader.   
      
   ls -l /boot/efi/EFI/slackware-15.0+/   
   total 136   
   -rwxr-xr-x 1 root root 139264 Jun 24  2024 grubx64.efi*   
      
   I haven't booted Linux in a virtual machine, but I've used other   
   EFI-booting systems from QEMU. If you have everything setup correctly   
   and Virtual Box isn't working, try QEMU.   
      
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