Ubuntu / Debian 的预置工作正常 - 系统是可启动的。
但fdisk -l结果如下：
Disk /dev/sda: 50 GiB, 53687091200 bytes, 104857600 sectors
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: dos
Disk identifier: 0x000e157a
Device Boot Start End Sectors Size Id Type
/dev/sda1 63 192779 192717 94.1M 83 Linux
/dev/sda2 * 192780 1172744 979965 478.5M 83 Linux
/dev/sda3 1172745 96470324 95297580 45.5G 83 Linux
/dev/sda4 96470325 104856254 8385930 4G 82 Linux swap / Solaris
Partition 1 does not start on physical sector boundary.
Partition 2 does not start on physical sector boundary.
Partition 3 does not start on physical sector boundary.
Partition 4 does not start on physical sector boundary.
我当前在 preseed 中的分区参数是：
d-i partman-lvm/device_remove_lvm boolean true
d-i partman-auto/purge_lvm_from_device boolean true
d-i partman-md/device_remove_md boolean true
d-i partman-lvm/confirm boolean true
d-i partman/alignment select cylinder
d-i partman/confirm boolean true
d-i partman-basicfilesystems/no_swap boolean false
d-i partman-partitioning/confirm_write_new_label boolean true
d-i partman/choose_partition select finish
d-i partman/confirm_nooverwrite boolean true
d-i grub-installer/only_debian boolean true
d-i grub-installer/bootdev string /dev/sda
d-i partman-auto/disk string /dev/sda
d-i partman-auto/method string regular
d-i partman-auto/expert_recipe string \
boot-root :: \
100 50 100 free \
$gptonly{ } \
$primary{ } \
$bios_boot{ } \
method{ biosgrub } \
. \
500 50 500 ext2 \
$primary{ } $bootable{ } \
method{ format } format{ } \
use_filesystem{ } filesystem{ ext2 } \
mountpoint{ /boot } \
. \
500 10000 1000000000 ext4 \
$primary{ } \
method{ format } format{ } \
use_filesystem{ } filesystem{ ext4 } \
mountpoint{ / } \
. \
200% 500 200% linux-swap \
$primary{ } \
method{ swap } format{ } \
.
如何避免Partition {n} does not start on physical sector boundary错误。预置时如何在partman中设置正确的起始扇区和扇区大小？
d-i partman/alignment将您的参数更改为，optimal而不是cylinder. 这应该可以解决问题。