[PATCH] doc: Mention the need of a BIOS boot partition when using GPT.

[宋文武]

* doc/guix.text (Preparing for Installation)[Disk Partitioning]:
Mention the need of a BIOS boot partition when using GPT with the defualt
GRUB.
---
 doc/guix.texi | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/doc/guix.texi b/doc/guix.texi
index 1f0bd7568..ab3b7211f 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -6962,6 +6962,11 @@ the partition layout you want:
 cfdisk
 @end example
 
+If your disk uses the GUID Partition Table (GPT) format and you plan to
+install BIOS-based GRUB (which is the default), make sure a BIOS Boot
+Partition is available (@pxref{BIOS installation,,, grub, GNU GRUB
+manual}).
+
 Once you are done partitioning the target hard disk drive, you have to
 create a file system on the relevant partition(s)@footnote{Currently
 GuixSD only supports ext4 and btrfs file systems.  In particular, code
-- 
2.11.0