Am Freitag, 13. Mai 2011 schrieb Martin Steigerwald: > Hi! > > I am about to receive a ThinkPad T520 with Intel SSD 320 real soon > hopefully. > > I wondered whether it might make sense to install with UEFI and GPT. > Informations from Arch Wiki hint at that for better alignment and less > space waste for SSD: > > https://wiki.archlinux.org/index.php/SSD#Using_GPT_-_RECOMMENDED_METHOD > > https://wiki.archlinux.org/index.php/Unified_Extensible_Firmware_Interf > ace > > > Did anyone here try this with any laptop with uefi BIOS? Did it work? > Were there problems? I have seen some Debian bug reports that were > closed. Just for the record. The ThinkPad BIOS Version: 8AET42WW (1.22 ), didn´t like to boot from a GPT partitioned SSD with BIOS Boot Partition and EFI System Partition. I made the latter just for the case I want to switch to EFI later on, but let grub-pc install to the BIOS Boot Partition. Even after switching to MBR it didn´t work. Only after I zerod sector 2 to 2047, the BIOS Boot Partition and the EFI System Partition and set the partition /boot bootable the BIOS booted from the SSD again. I do not think it was the bootable flag. Maybe it was the EFI System Partition, but I also tried after removing it in gdisk. A parted mklabel msdos which should wipe the pre-existing GPT headers did not suffice. So the exact circumstances why it didn´t work are unknown to me, but I now stick to MBR for the while being. Doesn´t matter anyway, as fdisk -cu also aligns at 1 MiB and displays partitions offsets and sizes in sectors. Well I saw an report that it doesn´t work with a ThinkPad W520 as well. -- Martin 'Helios' Steigerwald - http://www.Lichtvoll.de GPG: 03B0 0D6C 0040 0710 4AFA B82F 991B EAAC A599 84C7
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