On 13/09/2022 at 12:28, Reindl Harald wrote:
BTW: currently the machines are BIOS-boot - am i right that the 2 TB limitation only requires that the parts which are needed for booting are on the first 2 TB and i can use 4 TB SSD's on the two bigger machines?
Which 2 TB limitation ? EDD BIOS calls use 64-bit LBA and should not have any practical limitation unless the BIOS implementation is flawed.
in that case i think i would need GPT partitioning and does GRUB2 support booting from GPT-partitioned disks in BIOS-mode?
Yes, but it requires a "BIOS boot" partition for the core image (usually less than 100 kB, so 1 MB is plenty enough). Also some flawed BIOS require that a legacy partition entry in the protective MBR has the "boot" flag set.