[Buildroot] Creating a filesystem for Real Time Linux using QEMU

[Bogdan Cristea]

On Tuesday 17 November 2009 02:18:41 you wrote:
> Bogdan Cristea wrote:
> > On Monday 16 November 2009 10:51:33 you wrote:
> >> Add "rw" to your append command.
> >>
> >> So change it to -append "root=/dev/sda rw"
> >
> > Thanks for the tip, it allows me to write to the virtual hard disk, but
> > still the changes are not permanent.
> 
> Hi,
> 
> Hmm weird.
> 
> This is what I use to start qemu for 386:
> 
>     qemu -kernel bzImage.1 -hda hd.img -append "root=/dev/sda rw
> init=./init"
> 
> 
> And this is what I use for mips emulation:
> 
>     ../repos/mipsel-softmmu/qemu-system-mipsel -M malta --kernel
> ./vmlinux -hda hda256m-img -append "root=/dev/hda rw" -m 128 -nographic
> 
> In both cases any changes I make in the file system during emulation is
> persistent.
> 
> Did you also check the file permission of the virtual disk drive you are
> using? But if rw the you should have seen that the kernel is complaining
> when trying to write anything to the disk.
> 
> Hedwin Koning.
> 

Well, I have tried to change the root password and add a new user and it seems 
that the changes are not always recorded. 

However I have just begun to play with RT Linux in QEMU, but with the latest 
file system I have managed to compile I have been able to add a new user and 
change the fstab file. So thank you all for your help.