Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: How to return drive MBRs and FATs to their pre-Windows-7 states

30 May 2015   #21


Quote   Quote: Originally Posted by GokAy View Post
I thought there were 4 Basic partitions limit? or am I confusing?

Guess I am confusing with primary partitions.
Different partitions managers use different terms and even handle/allow/make certain types differently, but what I have is all consistent with MS-DOS fdisk and its maximum of either four primaries or three primaries plus an extended with multiple logical drives (even though fdisk, itself, will only make one primary before insisting upon extended with logical drives after that).

My System SpecsSystem Spec
01 Jun 2015   #22


Update: I have used bootsect both in XP and in Win7 to write and/or re-write /nt52 at the beginning of (each first partition of) each of my four hard drives, and bootsect reported success in each case. However, my first SATA (drive #3 of 4) still does not even try to boot anything and there is where I had previously received this error message:
BPD hidden sectors should not be zero for a hard-disk partition boot sector.
I had no idea whether bootsect might be able to fix that, but now I know it cannot. Win7 has written something there to bring about that error message, and I am still looking for a way to fix that.

My other issue still remains also, and that is that ntldr and boot.ini from any drive cannot bring XP up and get it running on any first attempt. Windows gives a "Disk Configuration Error" message, but then a machine restart will result in XP coming up and running on every second try. That matter is also related to whatever Win7 has done, and in the past I have fixed that by going back to 'fdisk /mbr' to put the Win98se loader back into first place and then again adding the /nt52. However, right now I am settling for having to restart my machine to get into XP since the next Win7 update would likely again break that just as it has done in the past.

Somebody somewhere knows about the matter of fixing BPD hidden sectors after Win7 has done whatever it has done, and so my search continues!
My System SpecsSystem Spec
13 Jun 2015   #23


Quote   Quote: Originally Posted by leejosepho View Post
Somebody somewhere knows...whatever [Win7] has done...
...and I have found him:
Here is what an expert has said: "Having more than 1 drive connected at the time you did the SP1 upgrade...likely did allow Windows to overwrite all sorts of code on every drive and even in the partitions of any of those with a Windows OS in them...pointing to the Win 7 install partition in an effort to make it always boot-up first."

That is exactly what has happened, and it had even broken the boot of my Win98se Startup floppy and I had to make a new one. Unless there is something somewhere in the Win7 EULA about Windows completely taking over like that, I should have been given an option just as with any non-Windows OS.

How to return drive MBRs and FATs to their pre-Win7 states | Windows Secrets Lounge
I will post an update after I have complete repairs.
My System SpecsSystem Spec


 How to return drive MBRs and FATs to their pre-Windows-7 states

Thread Tools

Similar help and support threads
Thread Forum
Boot Windows 7/8 from GPT on BIOS system : No hybrid MBRs or DUET!
Hi guys, Till now, Windows 7/8 x64 could boot from a GPT disk only on a UEFI system. Methods to enable this are hybrid MBRs and DUET. Both of which are hacks. We now have a simple way to boot windows (BOTH 32bit AND 64 bit) from a GPT disk on a BIOS system WITHOUT hybrid MBRs or DUET, using...
Installation & Setup
Drive C space did not return even when deleting files
Hi! This just happened right now actually. My Drive C: suddenly ran out of space as I was using it so I checked out what was wrong. After running Disk Cleanup I saw Temporary Files was eating a whopping 8 GB of space! So as would any other person I performed the deletion using Disk Cleanup. ...
General Discussion
Could an aging drive cause windows to return a 0x00000050 error
Hello all. I am debugging a windows xp sp3 32bit machine and every time I shut the machine off windows logs a 0x00000050 error and does a core dump. I know my drive is aging and using smartmontools and it reports that the reallocated sector count is not 0 so i do have some bad sectors on the hard...
BSOD Help and Support
Popup states i'm not running genuine windows
I've tried everything I know of, and have even had two separate chat sessions with Microsoft support, giving them control of my computer to fix the problem. Both times they did pretty much the same thing of trying to reinstall it by typing in the product key again, which goes through and the window...
Windows Updates & Activation
Windows 7 wireless problems after I moved from the states
OK, so here is my problem. I bought a laptop when I went back to California for vacation. When I was there I had no problems with wireless connection or LAN connection. Turned my computer on and i can immediately surf. I moved back to the Philippines and it will not connect to any wireless network...
Network & Sharing

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 07:40.
Twitter Facebook Google+ Seven Forums iOS App Seven Forums Android App