Re: [ros-dev] ReactOS Hybrid-USB Key attempt

[Igor Paliychuk]

Some time ago I was doing the same thing(it worked on some machines), but I
was using GRUB4DOS instead of syslinux to generate bootable USB Key (see
here http://diddy.boot-land.net/grub4dos/Grub4dos.htm and
http://sourceforge.net/projects/grub4dos/files/grubinst/)

2015-01-08 13:14 GMT+02:00 Alexander Rechitskiy <art1st-tm(a)yandex.ru>ru>:

>   Hi
>
>  Please check this
>  http://www.syslinux.org/wiki/index.php/Hardware_Compatibility#USB_related_p…
>
>  It could help with boot speed issue.
>
>  08.01.2015, 05:21, "Hermès BÉLUSCA - MAÏTO" <hermes.belusca(a)sfr.fr>fr>:
>
>  Hi all !
>
>
>
>  In this video :
>
>
>  https://drive.google.com/file/d/0BzFtJhksW7viRDRVMzluTnFjMlU/view?usp=shari…
>
>  (with strong French accent, sorry :P, and it was my first attempt at
>  making a video with a camera in one hand while doing the other things with
>  the other hand ^^), I show an attempt to create a hybrid-USB key by
>  configuring freeldr to load either a livecd (shown in the video) or a
>  bootcd in ramdisk.
>
>
>
>  Many remarks are in order:
>
>
>
>  - there’s a crash when booting the bootcd image, early in phase 1 boot in
>  Io (can be reproduced locally on vbox for example, with similar freeldr.ini
>  parameters that I show in the video).
>
>  - the whole story consists in loading a ramdisk, so I avoid all the
>  USB-related storage problems we could (and certainly) encounter if I used
>  the USB key more like as we do for our current livecds, i.e. permanent
>  reads to the removable device.
>
>  - a ROS livecd that can be removable (in the sense that one can use
>  another cd to test something, while ROS is still running) should be done
>  with some kind of hdd image file instead, that is then loaded in memory (so
>  that we can then read and write to this virtual drive).
>
>  - something weird happens when freeldr loads the livecd iso in memory:
>  first it takes 7 minutes to just try to open the iso file, and then 7 other
>  minutes to load the iso proper. This problem needs to be investigated.
>
>  - we still report strange dates when listing files from the livecd (at
>  least when it is mounted as ramdisk), see the video.
>
>  - finally, when using Standard PC (non-ACPI) HAL, I don’t really think we
>  reposition HDD heads into “sleep position”, because when I switch PC power
>  off with the button I can hear the HDD making the noise of the heads
>  quickly going back to sleep position, whereas I don’t think this should
>  happen if the heads were being already in the correct position before I
>  switch power off (when using the “shutdown” command of FreeDOS, the other
>  OS I have installed in the PC, the noise isn’t produced).
>
>
>
>  Cheers,
>
>  Hermès.
>
>
>
>  PS: I keep the right to remove the video at any time if I notice misuses.
>  And it’s not an official video (even if I was playing around with Windows
>  Movie Maker with the ReactOS logo during the first seven seconds, and with
>  the website links at the end) !!
>  ,
>
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>
>
>
>  --
>  Best regards,
>  Alexander Rechitsky aka Jeditobe
>
>
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