Yeah. And just a note, now you can do it 100% ROS-way, because of that: 
http://svn.reactos.org/svn/reactos?view=revision 
<http://svn.reactos.org/svn/reactos?view=revision&revision=66012> 
&revision=66012 : no SysLinux / GRUB / whatever else needed!

H.

 

De : Ros-dev [mailto:ros-dev-boun...@reactos.org] De la part de Igor Paliychuk
Envoyé : mercredi 14 janvier 2015 12:34
À : ReactOS Development List
Objet : Re: [ros-dev] ReactOS Hybrid-USB Key attempt

 

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...@yandex.ru>:

Hi

 

Please check this 
http://www.syslinux.org/wiki/index.php/Hardware_Compatibility#USB_related_problems

 

It could help with boot speed issue.

 

08.01.2015, 05:21, "Hermès BÉLUSCA - MAÏTO" <hermes.belu...@sfr.fr>:

Hi all !

 

In this video :

https://drive.google.com/file/d/0BzFtJhksW7viRDRVMzluTnFjMlU/view?usp=sharing

(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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