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: Which partition can I safely delete?

21 Feb 2012   #1

Windows 7 Professional 64
Which partition can I safely delete?

I recently purchased a Lenovo Y470 laptop with Windows 7 Pro 64. I want to set it up to dual boot Windows XP in order to run Pro-Tools Audio Editing software (an earlier version).

I began following the tutorial here, shrinking my main partition and deleting Lenovo's Disk Image logical drive. However, when I try to convert the free space into a new partition, it creates a new logical drive. Apparently, I can only have 3 primary partitions (and one logical drive). I also tried it using the command line method, and it failed to respond to the "create primary partition" command.

I'm attaching a screenshot here. It looks like I have a main partition, a 200 mb "system" partition with no recognizable data, and a 14.75 GB OEM partition.

I used a method described here to look at the OEM partition using a repair disk. The volume is labled X: Boot and it appears to contain some kind of backup disk image. I copied the contents to C, but when I tried to copy the "Windows" folder, it refused, telling me some of the contents were in use. That gave me pause.

My question: Is it safe to delete the OEM partition (I've made system restore disks)? What about the 200mb system partition? My understanding is I can't effectively run XP from a logical disk, only a primary partition. Does that sound right?

Thanks for any insight.

Attached Thumbnails
Which partition can I safely delete?-jd_dsk_2.jpg  
My System SpecsSystem Spec

21 Feb 2012   #2
Microsoft MVP


The System Reserved partition needs to stay as it contains the boot files for Windows 7. If you have backed up a set of Recovery disks and don't want the Recovery partition then you can delete the OEM partition.

However you are allowed to have a fourth Primary partition and that's likely what XP will create when you boot it's CD and full format an NTFS partition in the Unallocated space. Otherwise free Partition Wizard CD can do it for you .

One important question is if XP CD (use one with SP3) will see the partitions when you boot into it. If not you'll need to insert the SATA controller driver: SATA Drivers - Load in Windows XP Setup on Dual Boot
SATA Drivers - Slipstream into Windows XP CD
My System SpecsSystem Spec
21 Feb 2012   #3

Windows 7 Professional 64

Thanks very much. I think my Windows XP disk is SP 2, from a now defunct computer. If it's essential, I can by SP 3 disks on ebay.
My System SpecsSystem Spec

21 Feb 2012   #4
Microsoft MVP


Try it first. If it doesn't see the HD partitions then it likely needs SATA driver slipstreamed if you don't have floppy (who does?). If it sees the partiitons including the intended Unallocated Space then full format an NTFS partition there and try install.

If you use a torrent to get an XP SP3 CD for your licensed version (must be OEM- or retail-specific, remember) then be sure to read the comments to make sure it isn't cracktivated or has anything added.
My System SpecsSystem Spec
22 Feb 2012   #5

Windows 7 Professional 64

Installation with that CD worked. The guide is super helpful--especially slipstreaming the SATA drivers. I made a new partition with partition wizard, and I had to switch the BIOS mode to "Compatibility". I'm hoping I can switch back to SATA when it runs 7.

1 step left. I still need to run the repair with Easy BCD. The program wants to talk to the internet and I haven't got that working on XP yet. I'm trying to install a WPA 2 patch now to see if that will work. Easy BCD tells me I can manually install the .net framework, which I did, but it doesn't recognize this. If I can't get the internet to work, is there a manual way to perform that process?
My System SpecsSystem Spec
22 Feb 2012   #6
Microsoft MVP


Easiest is to start up Windows 7 so you can install EasyBCD to add XP from 7 which works better.

To do this, mark System Reserved partition Active: Partition - Mark as Active

Then boot into System Recovery Options on Windows 7 DVD or System Repair Disk to run Startup Repair - Run 3 Separate Times until Windows 7 starts on its own and System Reserved correctly holds the System Active flags.

YOu can then install EasyBCD 2.02 to Windows 7 to Add XP, accept offered boot files, autocompletes, Save, Reboot to Dual Boot menu.
My System SpecsSystem Spec
22 Feb 2012   #7

Windows 7 Professional 64

OK, I may try. I got the internet working on XP and succesfully ran Easy BCD in XP. Now I'm running startup repair in 7. It's chugging along.
My System SpecsSystem Spec
22 Feb 2012   #8
Microsoft MVP


If Easy ran successfully in XP to create the Dual Boot menu, then you don't need to start Windows 7.

Start Windows 7 by marking Active and running Startup Repair x3 to install EasyBCD only if necessary to add XP.
My System SpecsSystem Spec
22 Feb 2012   #9

Windows 7 Professional 64

I used command line to make the Windows 7 partition active. Booted again and got "BOOTMGR is missing".

I'm rooting around for my Windows 7 repair disk.
My System SpecsSystem Spec
22 Feb 2012   #10

Windows 7 Professional 64

OK, I set the system disk as active and ran startup repair about 8 times. It's not working. Neither XP or Windows 7 boots now. The diagnostic log has this clue:

Root cause found:

Unspecified changes to system configuration might have caused the problem.

Repair action: System files integrity check and repair
Result: Failed. Error code 0x490

I can run system restore, or restore from the backup disk image, but I'd rather find a work around if possible.
My System SpecsSystem Spec

 Which partition can I safely delete?

Thread Tools

Similar help and support threads for2: Which partition can I safely delete?
Thread Forum
Solved Can I safely delete VC_RED.MSI and associated files? Software
Can I safely delete these from my 2nd internal HD? General Discussion
Can I safely delete this stuff from this partition? Installation & Setup
Can I safely delete these files? Performance & Maintenance
Can I delete it safely General Discussion
Can I now safely delete this entry ? Installation & Setup
How to delete fonts safely General Discussion

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 10:28 AM.
Twitter Facebook Google+

Windows 7 Forums

Seven Forums Android App Seven Forums IOS App

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33