From: thiele@MB3.TU-Chemnitz.DE (Ralf Thiele) Subject: Re: DOS FDISK trashed my partition table, can I save my Linux on /dev/hda3 Date: Thu, 29 Jul 1993 08:21:13 GMT
You wrote:
>I have a 210 meg HD on a Gateway 2000 (486/33) and the lilo install was
>having problems. I decided to check the partition table because lilo
>was giving some error about the cylindes being too high...
>Fdisk (linux) said that there were all manner of erors/problems with my
>partition table. So I decided that in the interest of getting things
>done right I would just reinstall the SLS distribution...WRONG!
>I went to DOS, did teh DOS fdisk thing (removed partitions) then when I
>tried to repartition the drive it told me that I had only 41 Megs of
>available disk space...I thought perhaps the Linux partition table was
>still there and not letting DOS see all the disk space...nope after
>removing what was left of the linux partition table (nothing BTW) I
>tried again...only 41 megs available...anyone see this before? Anyone
>know how to fix the problem?
>--Chris
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I had this problem with another program under DOS. fdisk said, there were
a dos partition but a try to delete it, didn't work.
My Help:
I wrote a little program, that clears the Partition Table via BIOS-Int 13h
here the main part:
mov ah,03h ;write Sector
mov al,1 ;1 sector
mov cx,1 ;cyl.0, sector 1 (this is first sector=Part.-Table)
mov dh,0 ;Head 0
mov dl,80h+drive_number ;f.e. dl=80h--> first Harddisk...
mov bx,segment buffer ;buffer is a 512-Byte-Block
mov es,bx ;filled with 00
mov bx,offset buffer ;
int 13h
after running this, i was able to reorganice my harddisk with fdisk(DOS)
!!! Be carefully, this little program !! CLEARes !! the partition-table.
I hope, this helps you !
ralf.thiele@mb3.tu-chemnitz.de