1) write environment failure
grub> save_env 123
error: failure writing sector 0xe153800 to `hd0'.
2) LBA of grub environment variable file
ubuntu@ubuntu:~$ sudo hdparm --fibmap /boot/grub/grubenv
[sudo] password for ubuntu:
/boot/grub/grubenv:
filesystem blocksize 4096, begins at LBA 1050624; assuming 512 byte sectors.
byte_offset begin_LBA end_LBA sectors
0 236271616 236271623 8
=> 0xE153800 - 0xE153807
3) From 1) and 2), the sector number to be wroten is correct
4) debug message:
lib/disk.c:61: Writing `hd0'...
disk/efi/efidisk.c:602: writing 0x2 sectors at the sector 0xe153800 to hd0
kern/disk.c:295: Closing `hd0'.
disk/efi/efidisk.c:553: closing hd0
error: failure writing sector 0xe153800 to `hd0'.
grub_efidisk_write()
->grub_efidisk_readwrite()
->efi_call_5()...
5) so looks the issue should be related with APM's UEFI firmware:
X-Gene Merlin Board
Boot firmware (version 2.0.0 built at 12:52:11 on Sep 1 2015)
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https://bugs.launchpad.net/bugs/1512193
Title:
arm64: report 'error: failure writing sector 0x19df788 to `hd0'' after
a fresh install
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