Compiled kernel module fails to install

Question

A few moments ago finished compiling my own kernel, but still I can not boot with the new kernel.
When installing modules:
make modules_install
I get this:
Warning: you may need to install module-init-tools
The kernel was compiled in the traditional manner, and I get no error with mkinitcpio:
----> mkinitcpio -k 3.2.9 New -g /boot/initramfs-New.img
==> Starting build: 3.2.9
-> Running build hook: [base]
-> Running build hook: [udev]
-> Running build hook: [autodetect]
-> Running build hook: [pata]
-> Running build hook: [scsi]
-> Running build hook: [sata]
-> Running build hook: [filesystems]
-> Running build hook: [usbinput]
-> Running build hook: [fsck]
-> Running build hook: [fglrx]
Building fglrx module for 3.2.9 kernel ...
Ok.
==> Generating module dependencies
==> Creating gzip initcpio image: /boot/initramfs-New.img
==> Image generation successful
I have the entry in grub and I can enter without problem, but there comes a point where you do not start:
Waiting 10 seconds for device /dev/sda4 ...
ERROR: Unable to find root device '/dev/sda4'.
You are being dropped to a recovery shell
Type 'exit' to try and continue booting
sh: can't access tty: job control turned off
[rootfs /]#
And if my partition /root is /dev/sda4,I found a topic like this, but even I can not fix the problem:
https://bbs.archlinux.org/viewtopic.php?id=135851

Answer 1

I compiled the kernel old version that I have problems with the battery life on the newer versions.
The battery only lasts me one hour, but that is another problem.
fdisk:
Disk /dev/sda: 500.1 GB, 500107862016 bytes, 976773168 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
Identificador del disco: 0x5d8c0991
Disposit. Inicio Comienzo Fin Bloques Id Sistema
/dev/sda1 * 2048 409599 203776 7 HPFS/NTFS/exFAT
/dev/sda2 409600 147210239 73400320 7 HPFS/NTFS/exFAT
/dev/sda3 147219660 862304939 357542640 5 Extendida
/dev/sda4 * 862304940 976773167 57234114 83 Linux
/dev/sda5 147219723 859477499 356128888+ 7 HPFS/NTFS/exFAT
/dev/sda6 859477563 862304939 1413688+ 82 Linux swap / Solaris
/lib/modules:
drwxr-xr-x 4 root root 4096 oct 3 20:40 3.2.9
drwxr-xr-x 3 root root 4096 oct 3 08:55 3.5.4-1-ARCH
drwxr-xr-x 2 root root 4096 oct 3 08:55 extramodules-3.5-ARCH
/boot:
drwxr-xr-x 6 root root 4096 oct 3 06:20 grub
-rw-r--r-- 1 root root 12612222 oct 3 08:55 initramfs-linux-fallback.img
-rw-r--r-- 1 root root 3098536 oct 3 08:55 initramfs-linux.img
-rw-r--r-- 1 root root 2016551 oct 3 20:40 initramfs-New.img
-rw-r--r-- 1 root root 2081862 oct 3 19:37 System.map-New
-rw-r--r-- 1 root root 3444736 sep 15 00:15 vmlinuz-linux
-rw-r--r-- 1 root root 4434400 oct 3 19:35 vmlinuz-New
I install grub-legacy of AUR, but I have to change to syslinux.
For now this is my menu.lst:
# (0) Arch Linux
title Arch Linux
root (hd0,3)
kernel /boot/vmlinuz-linux root=/dev/sda4 nomodeset vga=773 ro
initrd /boot/initramfs-linux.img
# (0) Arch Linux
title Arch Linux NK
root (hd0,3)
kernel /boot/vmlinuz-New root=/dev/sda4 nomodeset ro
initrd /boot/initramfs-New.img