Resizing file of ext2 filesystem (initrd)

From Joyrex Wiki

Assume un-gzipped file is named initrd

• Check disk blocks:

du -m initrd
5    initrd

• Use dd to expand it:

  dd if=/dev/zero of=initrd size=1M seek=5 count=15

  replace the seek value with the value given by du'
• Check filesystem:

  e2fsck -f initrd

• Resize the filesystem:

  resize2fs initrd

• Check it:

du -m initrd
20   initrd