Как изменить размер корневого раздела ?

parted?

Parted говорит, что раздел нужно отмонтировать
Но как его отмонтировать ?
Режим read-only не помогает .

То есть как отмонтировать корневой раздел ?

Можно загрузиться с диска (с live-cd какого-нибудь) и там всё сделать

C какого ?
Partition Magic не смог - выдал ошибку чтения
?

Закажи убунту, загрузись с liveCD и...

Да с любого... С того же самого кноппикса, или подобного дистра. Вообще есть куча ориентированных дистров типа RIP и подобные.

Как правило, первый дистрибутивный диск ЛЮБОГО дистрибутива позволяет загрузить линух. Если нет своего дистрибутива, это можно сделать с первого диска любого другого дистрибутива.

Для самых ленивых:

File: parted.info, Node: Parted boot disks, Prev: Compiling, Up: Introduction

1.6 Using a Parted Boot Disk
============================

If you want run Parted on a machine without GNU/Linux installed, or you
want to resize a root or boot partition, you will need to use a boot
disk.

Boot disk images (x86-only) are available from:

`ftp://ftp.gnu.org/gnu/parted/bootdisk'

You need two disks. The boot disk contains Linux... it doesn't
vary between Parted versions. The root disk contains Parted (and other
stuff), and varies between Parted releases.

So, here are the steps:

* Download the boot disk (i.e. `partboot.img') and a root disk (eg:
`partroot-1.6.24.img').

* Create the boot disk, by copying the image to a floppy. In
GNU/Linux, you can type:


# dd if=partboot.img of=/dev/fd0 bs=1440k


In Windows, you can use `rawrite.exe'. It is available in many
places, including `ftp://ftp.tux.org/pub/dos/rawrite/rawrite.exe'.

* Create the root disk, using a similar procedure. e.g.:


# dd if=partroot-1.6.24.img of=/dev/fd0 bs=1440k


* Boot off the boot disk. Do this by inserting the boot disk, and
rebooting your computer. You might need to tell your BIOS (the
startup program when your computer turns on) to allow booting off
a floppy disk.

* When asked, insert the root floppy disk.

The boot disk contains many drivers for different hard disk
controllers, but yours might not be supported. So, if you're unlucky,
you will need to make your own boot disk. You can copy the parted
binary from the parted bootdisk onto another disk, or try other boot
disks, or make your own. You may find Mkpart useful (not to be
confused with Parted's mkpart command), which is a shell script to make
custom parted boot disks. It is available at:

`ftp://ftp.tux.org/pub/people/kent-robotti/mkpart'

To copy parted from the boot disk onto another disk:

1. Boot from the Parted boot disk.

2. Insert another ext2-formatted floppy disk. If it isn't formated,
you can create a file system with, for example:

$ parted /dev/fd0 mklabel loop mkpartfs primary ext2 0 1.4

3. Mount the floppy disk, e.g.,

$ mount -t ext2 /dev/fd0 /mnt/floppy

4. Copy `/usr/bin/parted' to the floppy, e.g.,

$ cp /usr/bin/parted /mnt/floppy

5. Unmount the floppy, e.g.,

$ umount /mnt/floppy

6. Find a boot disk that _does_ support your hard disk. (Hint: try
looking for rescue disks from various distributions on big mirror
sites)

7. Boot off your rescue disk. Mount the disk you copied Parted onto.

8. Run Parted. For example,

# cd /mnt/floppy
# ./parted

За инфу пасибо, но флоповода нема :(
Купить что ли ?
А то img ни на что кроме floppy не пишеца