Expanding Disk File System

Expanding Disk File System 4MB to 8MB

Firstly, ramdisk image can be downloadable "file -> ramdisk.image.gz" or you can use your ramdisk image.
This ramdisk is about 4MB and needed 8MB ramdisk. So, we should do make a ramdisk and copy the old files to new ramdisk.

make 8MB ramdisk

dd if=/dev/zero of=initrd.img bs=1M count=8

Format new ramdisk(initrd.img)

mke2fs -F -v -m0 initrd.img

mount initrd.img to /mnt/new-disk

mkdir /mnt/new-disk
mount -o loop initrd.img /mnt/new-disk

gunzip & mount ramdisk to old-ramdisk (/mnt/old-disk) file

mkdir /mnt/old-disk
gunzip ramdisk.image.gz
mount -o loop ramdisk.image /mnt/old-disk

Copy ex-files to new ramdisk

cp -rf /mnt/old-disk /mnt/new-disk

umount the ramdisks

umount /mnt/old-disk
umount /mnt/new-disk

Gzip new ramdisk

gzip -9 initrd.img
mv initrd.img ramdisk.image.gz