Board.KolibriOS.org

Hi,

I have been attempting to boot menuet/kolibri from my USB device using harddrive emulation. See these messages... http://menuet.2.forumer.com/index.php?s ... #entry7259

I was wondering if anyone has had any success booting from a USB Flash Memory using harddrive emulation. Perhaps someone with more experience in file systems can help.

Jason

Try my experience:
http://www.kolibri.hut1.ru/l_usb_e.htm
Good luck!

Hi

Thank You Mario79 for your responce. It is a little difficult to fully understand your guide but please let me know if i understand correctly:

1. You are using floppy drive emulation from bios (bios uses Int 0x13 ah=2 dl=0)

2. In order to use complete memory capacity you are first booting into DOS with bootsector on flash memory, then using a custom program to copy the menuet files to memory above 1MB.

3. You are using Fat16 file system because DOS versions < 7 do not support Fat32.

Unfortunetly my motherboard bios does not support floppy emulation, it only emulates as a harddrive.... (bios interrupt 0x13, AH=2, DL=0x80). One of me flash drives seems to scramble the memory, or perhaps the CHS settings in the bootsector header are not correct?

more to come later

Jason

JMD
1. I do not know that emulates BIOS, in principle no person of the difference - a main to was started boot in 0 sectors. Further all do meosload through services DOS.
2. Yes meosload was доработан me to copy IMG file.
3. Fat16.
You must not write boot themselves on Flash, all do format.com in Win98.
On some computer Kolibri this way is not started, but DOS is started practically on all computer.

Hi

Ahh i see Mario79. That is a very clever way of loading the kernel. Although i would like to attempt to load kernel without using DOS if for anything just to learn how to do it.

I believe the problems that most people are having is that the Sector and Head counts in the partition header (in the data area of bootsector) are not correctly set by the format program. I found a bios call (int 0x13, ah= which gives correct Cylinder, Head, and Sector counts and seems like it will allow me to create my own bootsector to load the kernel directly from a fat16 formatted USB Flash device.

Please check my updated posts here.... http://menuet.2.forumer.com/index.php?s ... #entry7271

Hopefully i will have time to finalize this project later tonight while most of you will be sleeping. At this point i have implemented the new bios call and it made it possible to navigate to root directory entry. but i did not have enough time to create code to search root directory for file and load file into memory.

Hi All,

Well after many months of inactivity, i finally got back to the USB bootsector and i have great news for all of you. I have created a bootsector which allows me to boot into KolibriOS from my USB stick. I cannot boot into official current release of MenuetOS just yet as the option to boot to a Previously loaded image no longer exists, hopefully this option can be add back to boot menu so we can enjoy the official release of Menuet from a USB Memory stick.

Check here for the file.... http://board.flatassembler.net/topic.php?p=51973#51973

JMD

JMD, thank you! It's a very good news.
But where I can find download link?

Thats strange i suppose i had teh wrong url...... try this one.... http://board.flatassembler.net/topic.php?t=6602

PS its soo difficult for me to submit messages to the forum, i dont understand cyrillic

JMD
http://board.flatassembler.net/topic.php?t=6602
Nothing...

Ahh i see. You must be logged in at FASM in order to see the files. you can also get to it by going to the main menu on the forum and goto category "OS Development" and in there you will see a "Test Boot Sector" thread.

Bad. Earlier not it is necessary was be authorized user that download files.

hi

any feedback, good or bad is appreciated. Im interested in knowing if anyone else had success with the boot sector for booting from USB or other devices. Please let me know if you find any bugs in it or anything like that.

JMD

JMD
Give the direct link to file, then I shall be able to check.

Ok heres a direct link to the USB bootloader.... http://www.geocities.com/cordata51/File ... olibri.zip

JMD
This does not work at my Flash - Kingston Data Traveler 512 Mb.
I all did, as it is written.