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: Windows 7 "System Reserved 100MB conflict"!!!

23 Apr 2013   #1

Windows 7 Ultimate X64
Windows 7 "System Reserved 100MB conflict"!!!

Hi, so first of all i'm going to tell you that i have two hard drives one is WD Caviar Black 1TB (primary) which is partitioned in two "Local Disks" 150GB for the OS and 781GB for games and other stuff and the secondary hard drive is WD Caviar Blue 500GB which i had partitioned also in two local disks but after of using for a long time it seemed that it was in its end but after searching online i found that it had some "soft bad sectors" and those can be fixed by doing a "Low Level Format", so i downloaded "Active Kill-Disk" to do it so i did it successfuly and after it finished i didn't get again the "local disks" in My Computer but in Disk Management yes but this time like a "Unallocated space 460GB" and i went into the Windows 7 format process to format it and make a new partition so the process of "paritions" in the windows 7 setup was like this:

Disk 0 Partition 1: Unallocated space 100mb (instead of "System Reserved 100mb) and i don't know why
Disk 0 Partition 2: Local Disk C: Operating System (150GB)
Disk 0 Partition 3: Local Disk D: DATA (781GB)
Disk 1 Partition 1: Unallocated space 460GB

And when i saw the Disk 0 Partition 1 named to "Unallocated space 100mb" i was a bit frustated because always it was "System Reserved 100mb" and not Unallocated ! BTW, when i right click on Disk 1 partition 1 unallocated space 460 gb to create a new partition i just leaved as it is (460GB) and after creating it as a partition i got a new "System Reserved 100mb partition" above the 460GB and what i did i just removed again the partition to make it unallocated and after that i removed the Unallocated space 100mb in the top and Partition 2 to make a new partition with the normal "system reserved 100mb" and after that to make new partition with the 460GB to not get 2 system reserved partitions but when i removed (Disk 0 Partition 1 and Disk 0 Partition 2 and created it again to 150GB) i didn't get again any system reserved partition so i selected that partition even i didn't get a system reserved partition and i continued to install Windows 7 on it and after it finished and got desktop i went to Disk Management and Unallocated space 460GB i maked it a new volume partition but now it seems that "System Reserved 100mb partition" is in the Disk 1 instead of Disk 0 and this is going to afraid me because if i do a clean install in the future the System Reserved 100mb will still be in Disk 1 instead of Disk 0 which is inormal so please for the God sake tell me what to do to get the normal partitions inclunding the System Reserved partition so for the next clean install of windows to have to do only with Partition 2: Local Disk C 150GB without touching others partitions.

So thank you so much for your effort and sorry for my poor english

Here is also the the screenshot of Disk Management:

(click on image for full size)

My System SpecsSystem Spec
24 Apr 2013   #2

Windows 7 Ultimate X64

Bump please!
My System SpecsSystem Spec
24 Apr 2013   #3

Windows 7 Ultimate X64

Here you can see more clearly for what we are talking about: ImageShack® - Online Photo and Video Hosting
My System SpecsSystem Spec

24 Apr 2013   #4

Windows 7 Pro x64 Windows 10 Pro x64

You 1st need to mark C active.

Partition - Mark as Active

then unplug disk 1

then run startup repair to get windows booting again.

Startup Repair

plug disk 1 back in and delete the entire drive to unallocated space, since you have nothing on it, then format the entire drive.
My System SpecsSystem Spec
24 Apr 2013   #5


In the future unplug all other HD's during install. Boot the Win7 installer and follow the steps for Clean Install Windows 7 deleting all partitions during Steps 7/8 and creating new as you wish. it will then create SysReserved for you.

To keep what you have now you need to move the System boot files to C which are now on Disk1 as signified by the System flag. To do this as Brian says above mark C Active in Disk Mgmt, then power down to unplug Disk1, boot into Win7 DVD or System Repair Disk to run Startup Repair up to 3 separate times with reboots until Win7 boots and C holds the System Active flags.

You can then plug back in Disk1 making sure Disk0 remains first HD to boot in BIOS setup, mark System Reserved Inactive Partition - Mark as Inactive - Windows 7 Forums

Then delete System Reserved in Disk mgmt or using Diskpart "Delete Partition Override" command: DiskPart Command-Line Options
My System SpecsSystem Spec
24 Apr 2013   #6

Windows 7 Ultimate X64

Hey thanks both for the replays i did it as AddRAM said so i made Local Disk C active in Disk Management i unpluged Disk 1 and i ran Startup Repair successfuly and now i'm planning to plug in the Disk 1 and to format it but now in Disk Management it doesn't show the "System Reserved partition" at all so is this ok or not because i don't want to continue on the next step if i did something wrong. In the link below you can see screenshot of Disk Management:

ImageShack® - Online Photo and Video Hosting
My System SpecsSystem Spec
24 Apr 2013   #7


That's because System Reserved is on the other HD which you unplugged, it was booting Win7 on C.

Now when you plug back in the other HD, make sure C HD remains the first HD to boot in BIOS setup Boot Priority. Mark System Reserved Inactive and then delete it as I gave you above. It's too small a space to bother recovering but if so here's How to extend partition easily with Partition Wizard - video help.
My System SpecsSystem Spec
24 Apr 2013   #8

Windows 7 Ultimate X64

Sorry for the slow response because i was a bit bussy but i did what you said but now in Disk Management the System Reserved partition it showing as a "Unallocated space 100mb" so if i delete also 465GB partition named "Western Digital BLUE" in the Windows 7 clean install process will it create a new system reserved partition like before or not ?

Screenshot: ImageShack® - Online Photo and Video Hosting
My System SpecsSystem Spec
24 Apr 2013   #9
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8

A 100MB system reserved partition is only created by the Windows installer, not by deleting partitions.

When you delete the 465GB partition you will get 465GB plus 100MB of unallocated space.

But the whole operation would be easier by just reformatting the whole disk.
My System SpecsSystem Spec
24 Apr 2013   #10


I also answered that question in my last post:

Quote   Quote: Originally Posted by gregrocker View Post
It's too small a space to bother recovering but if so here's How to extend partition easily with Partition Wizard - video help.
We can't see if the data partition has data since you didn't show the size used on disk columns, but if there's no data you can just delete and recreate the partition as suggested. if there's data I'd just leave it be or resize the data partition to the left using the link I posted above.
My System SpecsSystem Spec

 Windows 7 "System Reserved 100MB conflict"!!!

Thread Tools

Similar help and support threads
Thread Forum
Accidentally Deleted Files From 100MB "System Reserved" Partition
I got my system reserved partition mixed up with the memory card I inserted. I formatted the System Reserved partition. I have yet to reboot and fear my system may not start if I do. Is it possible to repopulate this partition with the files it needs?
General Discussion
"System Reserved (C:)" and "Local Disk (D:)" ??
Newbie here. I have searched around for a while but have not found a post with my exact situation. I just installed a new Seagate Momentus 500gb (7200rpm) SATA drive in my Lenovo X61 laptop and have been working on a installation of Windows7 Ultimate. Not realizing this was an upgrade...
Installation & Setup
2nd Installed Harddrive identified by Windows 7 as "System Reserved"
I purchased a new 1TB harddrive to host Windows 7. The installation was without any problem. Prior to installation, I removed all harddrives, including another 1TB data backup harddrive. When I installed the second drive, with all my important backed up data, it comes identified by Windows 7 as...
Hardware & Devices
Both "System reserved" and "C" partition cloned to external HDD: boot?
With EaseUS Backup Tool, I've cloned these two partitions ("System Reserved" and "C") to same-sized partitions on a external HDD ("X" and "Y"). Picture tells it concisely: How to make drives "X" and "Y" boot-able? In "Disk Management", I've noticed these partition labels missing: "X" (or...
Installation & Setup
Problem XP sees Windows 7 "System Reserved" as C
so i used method 2, having windows 7 installed first. everything worked out perfectly, except this one glitch. i have a 100 MB System Reserved Partition that came with my Windows 7 install, and it doesn't show up on Windows 7 (unless i assign it a drive letter) and in Windows XP... its defaulted as...
Installation & Setup

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 15:44.
Twitter Facebook Google+ Seven Forums iOS App Seven Forums Android App