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Cannot access USB key


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#1 befrielse

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Posted 08 June 2011 - 06:06 PM

I try to boot to DOS from USB memory. When Dos starts i have a drive letter C: but I can not connect to it. It is probably my usb key. The error is in UBCD 5:03 freedos boot Cd and hirens Cd Dos. I have tried to mount the onboard HD:s with NTFS driver and there is no problem with that. I need to access my usb memory but i can't figure out whats wrong?

Edited by befrielse, 08 June 2011 - 06:07 PM.


#2 steve6375

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Posted 08 June 2011 - 06:36 PM

If I boot from a USB flash drive containing Hirens Boot CD 13.2 as an ISO, then select DOS Programs and then Next - then Dos... and then Dos - it boots to an R: ram drive. If I then type dir C: I can list the contents of my USB flash drive that I booted from.
Can you describe what happens. If it boots to C: then you should be able to type dir C: and list the files on your USB drive.

#3 befrielse

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Posted 08 June 2011 - 06:42 PM

My USB-key is fat32 (sardu). I can boot dos and get the drives A: B: C: Q: (freedos). Then i start NTFS for dos and get D: and E: (my laptop HD:s) but trying to access C: ends up with unrecognized characters in folders.

I'm booting with syslinux...

#4 steve6375

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Posted 08 June 2011 - 06:49 PM

what are A: and B:?

#5 befrielse

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Posted 08 June 2011 - 06:51 PM

what are A: and B:?


A: is the "bootfloppy" the *.img content

B: is nothing

#6 steve6375

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Posted 08 June 2011 - 06:55 PM

maybe it does not like the way it is formatted. Try using RMPrepUSB to format a key as FreeDOS bootable + Boot as HDD. Freedos boot files are included with the RMPrepUSB download in a folder. See https://sites.google...torials/freedos.

#7 befrielse

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Posted 08 June 2011 - 07:28 PM

I will consider reformat but I have 12 GB Data on my USB key so it takes some time.

#8 MedEvil

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Posted 08 June 2011 - 08:28 PM

but trying to access C: ends up with unrecognized characters in folders.

Sounds like you have the wrong codepage loaded in DOS.

:dubbio:

#9 befrielse

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Posted 09 June 2011 - 02:46 PM

I know for sure now that my C: drive is actually the usb-key (same serialnumber). Trying to test the codepage suggestion but i have some problems to get bootdisks. Dos 6.22 doesn't support Fat32 and so on...

#10 anybastard

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Posted 14 July 2011 - 03:27 PM

Hi guys ,

more or less same problem i made my bootable usbkey ( ntfs ) with grub4dos and a freedos image , all works fine but i can see only A and B .

Is there a way or workaround to navigate inside the usbkey , internal hdd (sata)or other devices like optical device ???

I tried with RMPrepUsb procedure and the result is the same


Thanks so much for your help

King Regards
AnyB.

#11 amalux

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Posted 14 July 2011 - 03:59 PM

I don't use DOS much these days so just guessing, does Freedos even support NTFS?

Have you tried using something like Parted Magic?
http://partedmagic.com/doku.php

Maybe something here?
http://www.opus.co.tt/dave/utils.htm

Supplying the correct drivers may help, find the site that supports your setup; ex.
http://www.pocketech...ivers_usb2.html

:cheers:

#12 befrielse

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Posted 14 July 2011 - 04:08 PM

I have solved part of my problem. I reformated the usb with HP format and installed syslinux directly from the syslinux package. Now i have Hirens dos stuff but Freedos still doesn't work.

#13 Wonko the Sane

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Posted 14 July 2011 - 05:17 PM

DOS (*any* kind of DOS) has NO "native" NTFS support.
You need a NTFS filesystem driver.

There are quite a few, some Commercial, some Freeware/Free.

A suitable list/discussion is here:
http://reboot.pro/6865/

Whether any of them will actually work specifically on FreeDOS is up to you to find out.

:cheers:
Wonko




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