> I have a computer with 10 GB of RAM, but no hard disks. I want to
> install Debian to make it work this way:
> 1. Debian is installed in RAM (maybe from PXE netboot)
> 2. with some command a compressed squashfs image is created of the
> current system, and saved on an USB flash stick
> 3. the next time the system needs to be booted, it is booted from this
> USB flash stick, fetched and uncompressed totally into RAM, and then
> this flash stick is removed (it should not be needed for this stick
> to stay inserted while the system works, only for boot)
> 4. when (after) the system is upgraded (in live initramfs), a command
> (from point 2.) is run again to update the compressed squashfs image
> on the USB stick
It shouldn't be too hard to do, really. The usual `initrd' file is
actually a gzipped cpio archive, so just saving the whole filesystem via
cpio+gzip should do it.
Stefan
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