ZAR does not support writes to the disk. This is where the
Microsoft DiskProbe comes into play.
Note: it is not possible to run
both ZAR and DiskProbe simultaneously. You must close the one
currently running before opening the other. Otherwise the second program
to start will not be able to access disks properly because of exclusive
From this point on,
EXERCISE EXTREME CAUTION. Whenever
in a slightest doubt, do not continue making changes. In case you do
something wrong, the added damage is not necessarily confined to the
volume already damaged. You may damage another volume if you mess
In brief, we need to copy the sector at address LBABackup
over the sector at address LBAPrimary on the disk which
ZAR identifies as ID 0101 (in this example).
Device 010X in ZAR corresponds to PhysicalDriveX in
DiskProbe (only valid for X from 0 to 9 inclusive). For our example, we
thus need PhysicalDrive1.
Run the Disk Probe (C:\Program Files\Support Tools\dskprobe.exe
on a typical installation).
From the menu, select -- Drives -- Physical Drive. In
- Double click "PhysicalDrive1"
- Untick the corresponding "Read only" box.
- Click the corresponding "Set Active" button.
- Click "OK" to close the window.
We now need to verify that we're going to overwrite the correct
sector. From the menu, select -- Sectors -- Read. Into the
Starting Sector field, type in LBAPrimary value (32 in
our example), then click Read. Verify that data in the sector
matches what we've seen in ZAR (see above).
If the data does not match, DISCONTINUE
IMMEDIATELY. Otherwise, we're safe to go ahead.
Read the good sector. Once again, select --Sectors -- Read
from the menu. This time, enter LBABackup value (506879 in
this example) into the Starting Sector field, then click Read.
look like a good boot sector. Verify it has "NTFS" in capital letters
near the top. If it is not there, DISCONTINUE
From the menu, select -- Sectors -- Write. In there
- Make sure Handle 0 is selected, and it reads the correct
PhysicalDrive ID (PhysicalDrive1 in our example).
- Make sure it reads "write 1 sectors" at the top of
- Type in LBAPrimary value (32 in our example) into the
"Starting sector to write data" field.
- Click WriteIt, then acknowledge the warning.
- Close DiskProbe.