Jump to content











Photo
- - - - -

No GRLDR after I installed Hiren's on my USB key

grldr hiren grub4dos mbr

  • Please log in to reply
55 replies to this topic

#51 ejat

ejat

    Newbie

  • Members
  • 25 posts
  •  
    Malaysia

Posted 10 May 2013 - 02:06 AM

i do all you want me to and i try to reboot and it WORKS.how did you do that?how did you know about all the sector and command,etc?anyway,i would like to thank you for your assist.



#52 Wonko the Sane

Wonko the Sane

    The Finder

  • Advanced user
  • 13689 posts
  • Location:The Outside of the Asylum (gate is closed)
  •  
    Italy

Posted 11 May 2013 - 07:23 AM

i do all you want me to and i try to reboot and it WORKS.

Good :thumbup:

how did you do that?how did you know about all the sector and command,etc?

Even if it may seem to you like a sort of (black or white :unsure:) magic, it is really quite a simple set of diagnosing and fixing procedure, of course if you know how exactly, in detail a PC boots and know the grub4os commands syntax.

 

When grub4dos is installed, by default (i.e. unless you "force" it to NOT do it) makes a copy of the preexisting MBR on second sector.

 

Without a precise description of your actions BEFORE you asked for help, I had to check the values in both the "current" MBR (first sector) and of the "backup copy" (second sector).

 

These were three possibilities:

  1. Both CODE and DATA in the current MBR were wrong.
  2. Only CODE in the current MBR were wrong.
  3. Only DATA in the current MBR were wrong.

Since you got the "Missing operating system" message, which is "normal" for a Windows NT based system if the data is wrong,  the CODE was seemingly OK, and then the DATA wrong (#3 above).

By attempting to root to the active partition and chainloading directly the BOOTMGR, we verified it.

 

Reading the data in both MBR's I could get an idea of the size of hard disks that they were made for, one was for a 320 Gb Hd and one for a roughly 750 Gb one, once you provided the info that your hard disk is a 750 Gb one there were good probabilities that the data in the "backup" were correct, so we had the "backup", and here we had four possibilities:

  1. Both CODE and DATA in the backup MBR were wrong.
  2. Only CODE in the backup MBR were wrong.
  3. Only DATA in the backup MBR were wrong.
  4. Both CODE and DATA in the backup MBR were right

The simplest way to check was what I told you to do:

backup (on sector 61) "current" MBR and (on sector 62) "backup" MBR, in order to have a "way back" in case of issue.

replace the "current" MBR with the "backup".

After all it was situation #4 above. ;)

 

 

anyway,i would like to thank you for your assist.

You are very welcome.  :)

 

:cheers:

Wonko



#53 daileybread411

daileybread411
  • Members
  • 4 posts
  •  
    United States

Posted 17 November 2013 - 11:49 PM

hi Wonko the Sane,

i think you might be able to help. i hate to cut in on a discussion though. my question is somewhat related but i dont think it is on topic enough to ask in this thread. i wanted to get your attention specifically because i have asked for help in many forums and no one really responds. i was hoping that if i got your attention on this thread maybe you could please help me. let me know and ill start a new topic? ive been tryin to figure this out for over a week now. i really think you might have the answer.....please help.....



#54 Wonko the Sane

Wonko the Sane

    The Finder

  • Advanced user
  • 13689 posts
  • Location:The Outside of the Asylum (gate is closed)
  •  
    Italy

Posted 18 November 2013 - 10:49 AM

hi Wonko the Sane,
i think you might be able to help. i hate to cut in on a discussion though. my question is somewhat related but i dont think it is on topic enough to ask in this thread. i wanted to get your attention specifically because i have asked for help in many forums and no one really responds. i was hoping that if i got your attention on this thread maybe you could please help me. let me know and ill start a new topic? ive been tryin to figure this out for over a week now. i really think you might have the answer.....please help.....

Sure, by any means, do start a new thread with your issue. :)

:cheers:
Wonko

#55 baezm

baezm
  • Members
  • 1 posts
  •  
    Spain

Posted 5 days ago

Well, you need an app capable of accessing the disk.

 

dsfo/dsfi (part of the dsfok toolkit) though 32 bit should run normally in 64 bit.

Most likely you will need Administrator privileges.

....

 

:cheers:

Wonko

Wonko, great thanks for the instructions. I messed up with an USB stick and ended with "no grldr" message at boot (Win 7). This was the only real help I could find. Problem solved!



#56 Wonko the Sane

Wonko the Sane

    The Finder

  • Advanced user
  • 13689 posts
  • Location:The Outside of the Asylum (gate is closed)
  •  
    Italy

Posted 5 days ago

Wonko, great thanks for the instructions. I messed up with an USB stick and ended with "no grldr" message at boot (Win 7). This was the only real help I could find. Problem solved!

Only too glad to have contributed to another happy bunny in the basket :).

http://www.msfn.org/...#comment-828512

 

:duff:

Wonko







Also tagged with one or more of these keywords: grldr, hiren, grub4dos, mbr

0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users