[Help] Write on poor man's install?

**johnrw** · 10-07-2006, 09:17 PM

Originally Posted by Jacky

If I understand correctly, you want to mount r/w the partition where your iso image is.

When you boot from a iso image on disk (as in your poor man's install), the partition where the iso is will be mounted as a cdrom loop device in read-only mode. For example, if the iso file was on hdd1, then mount will read "hdd1 on cdrom2.loop type ext3 (ro)".

To make hdd1 writable, issue the following mount command:

mount /dev/hdd1 /cdrom2.loop -o remount

Regards.

huh?
It gives me an error.

sudo mount /dev/hda1 /media/hda1 -t ntfs -o remount,rw
Error opening partition device : Device or resource busy
Failed to startup volume : Device or resource busy
Couldn't mount device '/dev/hda1' : Device or resource busy

with cdrom2.loop
it says it is not in mtab
but it is there as /cdrom2.loop/KNOPPIX/knoppix.iso /cdrom/ iso9660 ro,loop=/dev/loop0 0 0

This thing is really starting to bug me...
I know Knoppix can write to the drive if I boot using the cd.
hda1 is ntfs...

best,
john

**Jacky** · 10-08-2006, 02:54 AM

Sorry, johnnyrw, but it does not seem like you are in the same situation as victoria, so the advice to her may not work for you.

What exactly is your situation, what were you trying to do when you got your errors and problems?

**johnrw** · 10-08-2006, 07:21 AM

Hi Jacky,

I want to mount r/w the partition where my iso image is.

That partition is hda1, it is ntfs. I am using grub4dos to boot up via the boot.ini, and using gilles ruymbeke's minirt_usb6.gz
Works great. Except I can't find any way to modify any files on hda1 (ntfs.)

Grub4dos's menu.lst is there for instance, and rebooting into windows xp just to make a small change in a text file...that is outside of the iso.

**Jacky** · 10-08-2006, 01:45 PM

I'm sorry, but I don't have any experience loading from iso on an NTFS partition so I can't advise. My only suggestion would be that you should note NTFS write capability in Knoppix is still experimental. Certainly the driver included in the CD contains limitations and is not up to date. Therefore perhaps you should consider creating a fat32 partition and put your iso there.

**johnrw** · 10-08-2006, 03:57 PM

Jacky,

Thank you for trying. The DVD is too big for the fat32 filesystem. I realize the write support is minimal. But at the same time, I think it can handle editing of a file which already exists. I have been running knoppix on ntfs, via the DVD image file in C:\KNOPPIX\knoppix.iso. It must be reading ntfs ok, because it runs reliable enough.

best,
john