On 28 Nov 2010 at 8:20, Phill Harvey-Smith wrote:
On 28/11/2010 08:07, Hollandia at
ccountry.net wrote:
A primary partition on C drive of one of my
computers is gone. FDISK
says that there is no partition on that drive.
Is there any way to undo this without losing the information on that
drive? I will of course need to do this from DOS...
I believe old versions of the Norton utilities disk diagnostic program
(NDD.exe I think), can search a disk and look for a valid dos
partition if the partition table is bad.
I believe that PCTools had this option also. It's also not hard to
construct your own partition table if you know the approximate
location (C: should be C0 H1 S1) and size of the table.
A hint for the future is to make an extra copy of the MBR and stash
it somewhere safe. At least one utility would make several copies
and write them to the unused sectors on C0 H0.
However, note that if you were using a dynamic drive overlay to
accommodate a drive larger than the PC's BIOS was capable of
supporting, that the procedure for recovery is somewhat different as
the DDO sets up a dummy partition for itself to boot from, then hides
that partition when the DDO software is loaded.
--Chuck