How to convert .tgz to .img ?

MTK358 · 04-19-2010, 04:31 PM

It seems much more suitable to use the command line rather than Nautilus.

reed9 · 04-19-2010, 04:37 PM

I was just about to post that solution.

I tried it and it worked for me though.

But rather than use a gui file manager, I just copied DISK2 from the command line.

Code:

sudo cp DISK2.TGZ /media/image
sudo umount /media/image

I also created a virtual machine in VirtualBox and successfully booted it. It asked for you to insert Disk 2 during the boot process. You need to have added your new floppy.img in the virtual media manager. You can then select Devices->Floppy Devices->floppy.img and hit Enter to continue the boot.

yeehi · 04-19-2010, 05:17 PM

Ha! That is great news that you got it going!

I must be nearly there, too. Unfortunately I am not quite able to get the second floppy to work properly.

I can see DISK2.TGZ in:

/media/image/DISK2.TGZ

When I use virtual box virtual media manager to navigate to the location of a floppy image, I can´t get it to see a floppy image. It just has a pink screen and there appear to be no floppy images available, except for the DISK1.IMG.

How can I get that floppy image?

Sorry this is so difficult for me!

reed9 · 04-19-2010, 05:48 PM

Pink screen? No idea what that could be.

This is what I did

Code:

reed@reed-laptop ~/Desktop % dd bs=512 count=2880 if=/dev/zero of=DISK2.img
2880+0 records in
2880+0 records out
1474560 bytes (1.5 MB) copied, 0.0175866 s, 83.8 MB/s
reed@reed-laptop ~/Desktop % sudo mkdir /mnt/floppy
reed@reed-laptop ~/Desktop % mkfs.msdos DISK2.img
mkfs.msdos 3.0.9 (31 Jan 2010)
reed@reed-laptop ~/Desktop % sudo mount -o loop DISK2.img /mnt/floppy
reed@reed-laptop ~/Desktop % sudo cp DISK2.TGZ /mnt/floppy
reed@reed-laptop ~/Desktop % sudo umount /mnt/floppy

Then created the Virtual Box machine, selecting Linux 2.2 as type.

Under the Media Manager, you're selecting the Floppy Image tab, right?

yeehi · 04-19-2010, 06:34 PM

I tried following your instructions above.
They should have got it working for me, but I don´t know why, they didn´t. I can´t understand why.
One good thing is that a DISK2 did appear in my folder and this was recognized as a floppy image in the virtual device manager.
When i reached the insert disc 2 and hit enter moment, I got this:

cannot find valid MSDOS file system on dev 02:00
mount: Mounting /dev/fd0 on /fd failed

reed9 · 04-20-2010, 07:54 AM

I'm at a loss. The error would indicate the filesystem wasn't created correctly.

yeehi · 04-20-2010, 09:37 AM

Thanks for helping me with this reed9. Really I should be able to get this thing running by now, but I just can´t. I have tried deleting everything and starting over again from the beginning but that didn´t work either.

Maybe this is the problem:

Some things I haven´t been able to delete, and I am using improperly prepared instances of files. For example, in my directory tree, I can see a place named

1.5 MB Filesystem

That must be the floppy disc or something that was created. I don´t know how to delete this. If I click on it, I get this message:

Unable to mount 1.5 MB Filesystem
Error mounting: mount: /dev/loop0: can't read superblock

Maybe that has something to do with the improper file system. If I could delete it and try what you pasted earlier, that would work. But I don´t know how to delete it.

Also, I have the following:

/media/image/DISK2.TGZ
/media/image2.gz (I created this trying my own ideas)

I would like to delete these 2 things, but I do not know how. I think if I could delete them, getting back to square one, I would then be able to get your procedure to work properly.

Thank you so much for having stayed with me on this problem! I really want to get this to work now!

reed9 · 04-20-2010, 10:01 AM

Does this not remove the files?

Code:

sudo rm /media/image/DISK2.TGZ
sudo rm /media/image/image2.gz

If you have the floppy image you created still mounted on /media/image, that might be a reason it could not be read by VirtualBox. Does it not successfully unmount?

Code:

sudo umount /media/image

In any case, I wouldn't think those things should prevent you from creating a different image file and mount point to work with.

yeehi · 04-20-2010, 11:30 AM

Oh thank you!

I used your instructions to delete the unwanted things. After doing so, I can still see a 1.5 MB Filesystem listed in my tree in media browser.

The following happened:

Quote:

sudo mkdir /mnt/floppy
mkdir: cannot create directory `/mnt/floppy': File exists

I checked the /mnt/floppy folder. It was there and it was empty. I proceeded anyway and completed the procedure you followed.

I then added 2 floppy images to the virtual box floppy media. I selected both these images from my /basiclinux/ folder in which they were created.

Perhaps the problem stems from the 1.5 MB Filesystem, which I seem to be unable to delete.

I completely understand if you don´t want to keep on helping with this - you have been very kind to have gone so far!

I received the same error message as before.

itsbrad212 · 04-20-2010, 11:53 AM

Code:

Perhaps the problem stems from the 1.5 MB Filesystem, which I seem to be unable to delete.

Is there an error or anything when you try to remove it?

yeehi · 04-20-2010, 12:01 PM

Quote:

Originally Posted by itsbrad212

Code:

Perhaps the problem stems from the 1.5 MB Filesystem, which I seem to be unable to delete.

Is there an error or anything when you try to remove it?

There is an error. When I click on it, I get this:

Quote:

Unable to mount 1.5 MB Filesystem Error mounting: mount: /dev/loop0: can't read superblock

If I right click and try to mount, it says it is unable to mount file system.

If I highlight it and hit delete, nothing happens.

Afterglow59 · 02-28-2012, 10:11 AM

For those who had this problem and like me went out there for an answer, it's quite easy to do under Windows.

1. Open up 7-zip
2. Open Tools -> Options
3. Check tgz files
4. open up your tgz file and extract it somewhere
5. open up MagicISO (or something else that does the job, MagicISO is fine)
6. make your .img file with the extracted files from the .tgz
7. Enjoy