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To boot from this new root device all that is required is that the floppy disk prepared as described above is inserted for the PC to boot from.
You will see the following sequence of events.
When this is complete you can remove the boot floppy and use the Linux system.
There are a number of stages where this process could fail, I will try to explain what they are and what to check.
DOS booting is easy to recognise by the message that it prints
The kernel starts by uncompressing itself, this can give crc errors if the kernel image is corrupted. Then it will start running the initialisation sequence which is very verbose with diagnostic messages. Loading of the initial ramdisk device is also visible during this phase.
The normal boot sequence of the new root device will now continue and this is
quite verbose. There may be problems about the root device being mounted
read-write, but the
When the boot sequence has completed, the remaining problem is that programs are confused about whether the DOS partition is mounted or not. This is why it is a good idea to use the fake mount command described earlier. This makes life a lot easier if you want to access the files on the DOS device.
The documents that I used to create my first loopback root filesystem were:
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