Wubi

Try (hd0, 1): NTFS5: error: "prefix" is not set.

Asked by Dale Meier

I have a dual boot with the new Natty 11.04 and Windows 7. It has been working fine for 2 days without any errors. Last night I did my usual update manager to Ubuntu before going to bed. this morning when choosing to boot Ubuntu I get the following message.

try (hd0, 0) : NTFS5: no wubildr
try (hd0,1) : NTFS5: error: "prefix" is not set

then after waiting 5 min this appears...

error: no such device:/ubuntu/disk/root.disk.

then after waiting another 5 min this appears...

error: no such device:/ubuntu/install/boot/grub/grub.cfg.

then i wait another 5 min it changes screen and this appears...

GNU GRUB version 1.99 rcl-13ubuntu3
Minimal BASH-like line editing is supported. for the first word, TAB lists possible command completions. anywhere else TAB list device or file completions.
grub> _

this stays on the screen for quite a awhile...

Anyways I really hope someone is familier with this issue, and can guide me to a solution. I am worried as I have many important photos on my hard disk!

Thank you for you time and consideration,

Dale

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Dale Meier
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delance (olivier-delance) said : 		#1

I hope I will not have same issue as you, as I just downloaded the latest kernel and have not yet rebooted!
As it seems you have installed via Wubi, I will redirect you to Mr ~bcbc.

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bcbc (bcbc) said : 		#2

Please refer to http://ubuntu-with-wubi.blogspot.com/2011/08/missing-rootdisk.html

The message about the 'prefix not being set' is innocuous (happens on every 11.04 wubi install on every boot).

Not sure why running updates would cause corruption of the root.disk (that's another issue I guess, but see if you can recover the root.disk in the meantime).

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Dale Meier (dalerobertmeier) said : 		#3

Thank you very much (bcbc)

I ran the check disk as instructed in Windows. I rebooted and it started the check disk for C. I went out to feed the dogs and when I came back Ubuntu was on my computer. I didn't expect that at all! I rebooted and checked to see if i could go into Windows...no issues. So now I am able to get into Ubuntu and windows without any flaws! Seems that check disk did the trick! Thank you again for taking the time to help me!

Cheers,

Dale

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bcbc (bcbc) said : 		#4

Great! And thanks for the detailed feedback. It's good that you didn't have
to recover them from \found.000 - probably means the corruption was minor.

I've been noticing a bunch of these issues lately - not really sure what's
going on Win 7 and Wubi (and I haven't personally experienced this on my
wubi installs), but I'll link this question to a bug report so that the
developers are aware.

Revision history for this message
Sumit Neupane (sumit-neup) said : 		#5

hey bcbc, i just installed ubuntu on my external hdd and its ntfs filesystem i use it for file storage as well. i'm just trying out linux and i am new to it. the same error shows up everytime i choose ubuntu to boot, i followed the instruction recovered the file from found.000 and tried again nothing happened and again i removed it and installed it again still same problem..and again i tried chkdsk, it says no problem, and found.000 is empty to recover from..i tried mint same way and it gives the same error..any more i can do about it or am i doomed to not use linux? :P thanks.. :)