doc: Correct EFI-specific system configuration details.

* doc/guix.texi (Preparing for Installation): /boot/efi is arbitrary.
Mention /boot/efi consistently.
(Proceeding with the Installation): Make it explicit that the EFI mount point
must both be mounted and be specified in the system configuration.

1 files changed, 8 insertions, 7 deletions

diff --git a/doc/guix.texi b/doc/guix.texi
index 782c681cf1..b8071d17de 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -2106,8 +2106,8 @@ manual}).
 @cindex UEFI, installation
 @cindex ESP, EFI system partition
 If you instead wish to use EFI-based GRUB, a FAT32 @dfn{EFI System Partition}
-(ESP) is required.  This partition should be mounted at @file{/boot/efi} and
-must have the @code{esp} flag set.  E.g., for @command{parted}:
+(ESP) is required.  This partition can be mounted at @file{/boot/efi} for
+instance and must have the @code{esp} flag set.  E.g., for @command{parted}:
 
 @example
 parted /dev/sda set 1 esp on
@@ -2169,9 +2169,9 @@ mount LABEL=my-root /mnt
 @end example
 
 Also mount any other file systems you would like to use on the target
-system relative to this path.  If you have @file{/boot} on a separate
-partition for example, mount it at @file{/mnt/boot} now so it is found
-by @code{guix system init} afterwards.
+system relative to this path.  If you have opted for @file{/boot/efi} as an
+EFI mount point for example, mount it at @file{/mnt/boot/efi} now so it is
+found by @code{guix system init} afterwards.
 
 Finally, if you plan to use one or more swap partitions (@pxref{Memory
 Concepts, swap space,, libc, The GNU C Library Reference Manual}), make
@@ -2253,8 +2253,9 @@ you want to install GRUB on.  It should mention @code{grub-bootloader} if
 you are installing GRUB in the legacy way, or @code{grub-efi-bootloader}
 for newer UEFI systems.  For legacy systems, the @code{target} field
 names a device, like @code{/dev/sda}; for UEFI systems it names a path
-to a mounted EFI partition, like @code{/boot/efi}, and do make sure the
-path is actually mounted.
+to a mounted EFI partition, like @code{/boot/efi}; do make sure the path is
+currently mounted and a @code{file-sytem} entry is specified in your
+configuration.
 
 @item
 Be sure that your file system labels match the value of their respective