Yes and No ! !
Necessary explanation :-
My last FULL image file has the name
Code:
D4F3BDD38CC36FC5-00-00.mrimg
The name for all DIFF and INCR files based upon this is always of the form
Code:
D4F3BDD38CC36FC5-xx-xx.mrimg
Where the suffix xx is a 2 digit decimal number in the range 01 to 99
I believe that after 99 the suffix progresses to -yy-xx-xx,
but I think after 100 days being afflicted with all the Patch Tuesdays and other Windows Woopsies,
the Differential images will be half the size of the FULL and I would start a fresh series.
The extensions are always mrimg,
and the prefix such as D4F3BDD38CC36FC5 is random for each FULL and its derivatives.
Given that -00-00 is always the FULL,
And if -10-10, -20-20, -30-30 etc are DIFFerentials,
Then all the other suffixes are INCRementals.
On that basis, if the file *-23-23.mrimg becomes corrupt it will have zero effect upon restoration from any file in the range *-00-00 through to *-22-22.mrimg,
and also zero effect upon *-30-30.mrimg and upwards.
After *-23-23.mrimg becomes corrupt I do not believe it will be possible to create any further Incrementals until a subsequent DIFFerential is created,
but if corruption occurs after creating *-27-27.mrimg then all images from *-23-23 to *-27-27 will be defective.
A clever workaround for these defective files is a registry hack which tells Macrium to proceed regardless of checksum errors.
I would have to search for the precise information but I know this allows the image to be Mounted and a drive letter allocated so that Windows Explorer can browse the image and copy all the files. It possibly would also allow restoration to a new Partition.
I can make a 1 GB (up to 2 GB) DIFF image every 10 days, and 15 GB of DIFF + 6 GB FULL = 21 GB is good for 90 days.
By doing an INCRemental on 9 days out of 10, and keeping only the last 30 Incrementals I can go back to any chosen day in the last month at the cost of an extra 3 GB, i.e. grand total for series = 24 GB.
That is the theory.
In Practice I have one 6 GB FULL plus 32 DIFF/INCR totalling an extra 5.6 GB,
so I have high hopes of keeping below 25 GB for 90 days.
The principle desire for daily incrementals is that should Microsoft without notice slip a patch onto my system, when I start up the next morning and it fails to boot I can easily restore back to how it was the day before Microsoft corrupted it, and I will only lose the last day's documents, and not the last 10 days.
(This system was validated by WGA but the evil empire sneaked a WGA update which I believe allows them to download new hack detections. It did not act as they documented - instead Windows ALWAYS STOPPED RESPONDING about 100 Seconds after a Restart, and the ONLY way to restart was to disconnect all power.
As it happened the Macrium Recovery BOOT CD allowed me to create a backup of my trashed system and then Restored my last good image. Then under a working Windows system I used Macrium to mount the image of the trashed system, and BestSync found several thousand files that were different, and I easily deselected all the Windows tweaks and twitches to itself and retained only my latest documents, desktop links, etc, and BestSync then restored all I needed to my resuscitated Windows.)
Regards
Alan