Xpenology grub.cfg edit

1.mount

root@DS3617xs:~# ll /dev/sy*
crw-r--r-- 1 root root 201, 0 Apr 26 14:06 /dev/synobios
brw-r--r-- 1 root root   8, 0 Apr 26 14:06 /dev/synoboot
brw-r--r-- 1 root root   8, 1 Apr 26 14:06 /dev/synoboot1
brw-r--r-- 1 root root   8, 2 Apr 26 14:06 /dev/synoboot2
root@DS3617xs:~# cd /dev
root@DS3617xs:/dev# mount synoboot1 /mnt/synoboot1
root@DS3617xs:/dev# 

2.grub.cfg edit

root@DS3617xs:/dev# cd /mnt/synoboot1/grub/
root@DS3617xs:/mnt/synoboot1/grub# vi grub.cfg

3.unmount

root@DS3617xs:/mnt/synoboot1/grub# cd /mnt
root@DS3617xs:/mnt# umount /mnt/synoboot1
root@DS3617xs:/mnt# rm -rf /mnt/synoboot1