deleted mbr,boot sector

as mentioned deleted mbr and part table
on hdd with part1-fat32 and partition2-fat16

so part1 not visible in dos any more

To make it visible and bootable using Norton Disk editor,confirm
please?

-need to input first entry in part table of the physical hard disk
with start/end head.sector.cyl and partition1 size which should
be=size_in_KB*2 ,

(counting in some reserved sectors is not necessary even though
part1 is primary)

-need to input appropriate info in boot sector of part1(sector 0 only):
8 sect per cluster, file sys id=Bh...

-need to refresh mbr and boot sector code for part1

If memory servers NDD (Norton Disk Doctor- you should probably have
this is if you have the editor) can fix this for you. Hopefully now
the lesson is learned to back up the sector before you mess with it.

On Jun 1, 8:36*pm, poster wrote:
as mentioned deletedmbrand part table
on hdd with part1-fat32 and partition2-fat16

so part1 not visible in dos any more

To make it visible and bootable using Norton Disk editor,confirm
please?

-need to input first entry in part table of the physical hard disk
with start/end head.sector.cyl and partition1 size which should
be=size_in_KB*2 ,

* (counting in some reserved sectors is not necessary even though
part1 is primary)

-need to input appropriate info in boot sector of part1(sector 0 only):
8 sect per cluster, file sys id=Bh...

-need to refreshmbrand boot sector code *for part1

ndd usually makes more damage than good
update:

did said but for physical hdd advanced recovery when input- start
side.sector.cyl=1.0.1 and end s.s.c=part2start-1 ,with sectors/
cluster=32 you get fat32 as it should be but then virtual disk button
does not display data but message-inconsistent sec/cluster given 16
derived 8, however when you change the value to 8 still no
data.Inputting sec/cluster=64 gives fat16but then virtual button takes
you to sector 263 with no data in it.Perhaps Boot sector info and
partition table need to be repaired before using advaced recovery and
disk virtualisation??

(however backup boot record in sector 6 is gone as well)

I would scan the whole disk using some tool (dd+grep in Linux or such) to find some signature of the boot sector - "FAT" or "NTFS" or "MSDOS" (forgot what one is actually used).

Then look at the found sector in NDD to determine whether this is a valid boot sector. Then you know the position of the boot sector (volume start) and volume size, and you can create the MBR entry manually based on this data.

CHS values in MBR entries are _not_ used by modern OSes - Windows and Linux at least - since early 2000ies at least. They are properly written by the partitioning tools though, and are used by MS DOS.

--
Maxim S. Shatskih
Windows DDK MVP

http://www.storagecraft.com

"poster" wrote in message ...
as mentioned deleted mbr and part table
on hdd with part1-fat32 and partition2-fat16

so part1 not visible in dos any more

To make it visible and bootable using Norton Disk editor,confirm
please?

-need to input first entry in part table of the physical hard disk
with start/end head.sector.cyl and partition1 size which should
be=size_in_KB*2 ,

(counting in some reserved sectors is not necessary even though
part1 is primary)

-need to input appropriate info in boot sector of part1(sector 0 only):
8 sect per cluster, file sys id=Bh...

-need to refresh mbr and boot sector code for part1

"poster" wrote in message ...
On Jun 1, 8:36 pm, poster wrote:
as mentioned deletedmbrand part table
on hdd with part1-fat32 and partition2-fat16
so part1 not visible in dos any more
To make it visible and bootable using Norton Disk editor,confirm
please?
-need to input first entry in part table of the physical hard disk
with start/end head.sector.cyl and partition1 size which should
be=size_in_KB*2 ,
(counting in some reserved sectors is not necessary even though
part1 is primary)
-need to input appropriate info in boot sector of part1(sector 0 only):
8 sect per cluster, file sys id=Bh...
-need to refreshmbrand boot sector code for part1
ndd usually makes more damage than good
update:
did said but for physical hdd advanced recovery when input- start
side.sector.cyl=1.0.1 and end s.s.c=part2start-1,

On many disks, the start address for the first partition is cylinder 0, head 1,
sector 1. Also, zero is not a valid entry for the sector field and DOS can't
handle a partition which starts on something other than sector 1.

with sectors/
cluster=32 you get fat32 as it should be but then virtual disk button
does not display data but message-inconsistent sec/cluster given 16
derived 8, however when you change the value to 8 still no
data.Inputting sec/cluster=64 gives fat16but then virtual button takes
you to sector 263 with no data in it.Perhaps Boot sector info and
partition table need to be repaired before using advaced recovery and
disk virtualisation??

See if this is helpful.

http://support.microsoft.com/kb/192322

(however backup boot record in sector 6 is gone as well)

See if the software you are using has an option to search for boot sectors,
since it's possible that the partition starts at a non-standard address.

Ben

On Jun 3, 9:58*am, "Ben Myers" wrote:
"poster" wrote in ...

On Jun 1, 8:36 pm, poster wrote:



as mentioned deletedmbrand part table
on hdd with part1-fat32 and partition2-fat16
so part1 not visible in dos any more
To make it visible and bootable using Norton Disk editor,confirm
please?
-need to input first entry in part table of the physical hard disk
with start/end head.sector.cyl and partition1 size which should
be=size_in_KB*2 ,
(counting in some reserved sectors is not necessary even though
part1 is primary)
-need to input appropriate info in boot sector of part1(sector 0 only):
8 sect per cluster, file sys id=Bh...
-need to refreshmbrand boot sector code for part1
ndd usually makes more damage than good
update:
did said but for physical hdd advanced recovery when input- start
side.sector.cyl=1.0.1 and *end s.s.c=part2start-1,

On many disks, the start address for the first partition is cylinder 0, head 1,
sector 1. *Also, zero is not a valid entry for the sector field and DOS can't
handle a partition which starts on something other than sector 1.

with sectors/
cluster=32 you get fat32 as it should be but then virtual disk button
does not display data but message-inconsistent sec/cluster given 16
derived 8, however when you change the value to 8 still no
data.Inputting sec/cluster=64 gives fat16but then virtual button takes
you to sector 263 with no data in it.Perhaps Boot sector info and
partition table need to be repaired before using advaced recovery and
disk virtualisation??

See if this is helpful.

http://support.microsoft.com/kb/192322

(however backup boot record in sector 6 is gone as well)

See if the software you are using has an option to search for boot sectors,
since it's possible that the partition starts at a non-standard address.

Ben
actually first problem is making a partition visible in ne

On Jun 3, 9:02*pm, poster wrote:
On Jun 3, 9:58*am, "Ben Myers" wrote:

"poster" wrote in ...

On Jun 1, 8:36 pm, poster wrote:

as mentioned deletedmbrand part table
on hdd with part1-fat32 and partition2-fat16
so part1 not visible in dos any more
To make it visible and bootable using Norton Disk editor,confirm
please?
-need to input first entry in part table of the physical hard disk
with start/end head.sector.cyl and partition1 size which should
be=size_in_KB*2 ,
(counting in some reserved sectors is not necessary even though
part1 is primary)
-need to input appropriate info in boot sector of part1(sector 0 only):
8 sect per cluster, file sys id=Bh...
-need to refreshmbrand boot sector code for part1
ndd usually makes more damage than good
update:
did said but for physical hdd advanced recovery when input- start
side.sector.cyl=1.0.1 and *end s.s.c=part2start-1,

On many disks, the start address for the first partition is cylinder 0, head 1,
sector 1. *Also, zero is not a valid entry for the sector field and DOS can't
handle a partition which starts on something other than sector 1.

with sectors/
cluster=32 you get fat32 as it should be but then virtual disk button
does not display data but message-inconsistent sec/cluster given 16
derived 8, however when you change the value to 8 still no
data.Inputting sec/cluster=64 gives fat16but then virtual button takes
you to sector 263 with no data in it.Perhaps Boot sector info and
partition table need to be repaired before using advaced recovery and
disk virtualisation??

See if this is helpful.

http://support.microsoft.com/kb/192322

(however backup boot record in sector 6 is gone as well)

See if the software you are using has an option to search for boot sectors,
since it's possible that the partition starts at a non-standard address..

Ben

actually first problem is making a partition visible in ne

played with numbers a bit and voila partition data showed up
now how do you go about copying it to another place- when you edit/
mark the folder it copies just the list of files in it?(NDE clipboard
is only 4KB)

On Jun 3, 9:02*pm, poster wrote:
On Jun 3, 9:58*am, "Ben Myers" wrote:

"poster" wrote in ...

On Jun 1, 8:36 pm, poster wrote:

as mentioned deletedmbrand part table
on hdd with part1-fat32 and partition2-fat16
so part1 not visible in dos any more
To make it visible and bootable using Norton Disk editor,confirm
please?
-need to input first entry in part table of the physical hard disk
with start/end head.sector.cyl and partition1 size which should
be=size_in_KB*2 ,
(counting in some reserved sectors is not necessary even though
part1 is primary)
-need to input appropriate info in boot sector of part1(sector 0 only):
8 sect per cluster, file sys id=Bh...
-need to refreshmbrand boot sector code for part1
ndd usually makes more damage than good
update:
did said but for physical hdd advanced recovery when input- start
side.sector.cyl=1.0.1 and *end s.s.c=part2start-1,

On many disks, the start address for the first partition is cylinder 0, head 1,
sector 1. *Also, zero is not a valid entry for the sector field and DOS can't
handle a partition which starts on something other than sector 1.

with sectors/
cluster=32 you get fat32 as it should be but then virtual disk button
does not display data but message-inconsistent sec/cluster given 16
derived 8, however when you change the value to 8 still no
data.Inputting sec/cluster=64 gives fat16but then virtual button takes
you to sector 263 with no data in it.Perhaps Boot sector info and
partition table need to be repaired before using advaced recovery and
disk virtualisation??

See if this is helpful.

http://support.microsoft.com/kb/192322

(however backup boot record in sector 6 is gone as well)

See if the software you are using has an option to search for boot sectors,
since it's possible that the partition starts at a non-standard address..

Ben

actually first problem is making a partition visible in ne


played with numbers a bit in nde and voila partition data showed up
now how do you go about copying it to another place- when you edit/
mark the folder it copies just the list of files in it?(NortonDisk
Editor clipboard is only 4KB)

"poster" wrote in message ...
played with numbers a bit in nde and voila partition data showed up
now how do you go about copying it to another place- when you edit/
mark the folder it copies just the list of files in it?(NortonDisk
Editor clipboard is only 4KB)

If you are referring to a Norton Disk Editor feature, you probably should
start a new thread or post in a Norton forum.

http://community.norton.com/norton/board?board.id=other

If not, I suggest you back up the existing partition table, then write the
new data to it, restart the computer and see if you have access to the
missing files and folders.

Ben

On Jun 6, 8:46*am, "Ben Myers" wrote:
"poster" wrote in ...
played with *numbers a bit in nde and voila partition data showed up
now how do you go about copying it to another place- when you edit/
mark the folder it copies just the list of files in it?(NortonDisk
Editor clipboard is only 4KB)

If you are referring to a Norton Disk Editor feature, you probably should
start a new thread or post in a Norton forum.

http://community.norton.com/norton/board?board.id=other

If not, I suggest you back up the existing partition table, then write the
new data to it, restart the computer and see if you have access to the
missing files and folders.

Ben
ok but
does anyone know how does norton d.e. access files with advanced
recoverz mode-is it using fat tables?Also confirm please-boot sector
info that needs to be input in sector 63 is for the first partition
and not for the hard disk as a whole