Forum - Dual boot - Windows 7 Already installed

Win-Raid Forum (Drivers - Firmware - Modding) � Important Drivers (AHCI/RAID, NVMe, USB etc.) � General: Storage Drivers (AHCI/RAID, NVMe and USB) � Dual boot - Windows 7 Already installed - Win XP Partition Unknown

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#1 | Dual boot - Windows 7 Already installed - Win XP Partition Unknown datum

Sun Mar 06, 2016 8:08 pm (Last edited: Sun Mar 06, 2016 8:30 pm)

Hi

My pc info -
AMD Athlon(tm) 5150 APU with Radeon(tm) R3
Motherboard Gigabyte AM1M-S2H
Northbridge AMD K16 IMC rev. 00
Southbridge AMD Kabini FCH rev. 7.2
Memory Type DDR3
Memory Size 4 GBytes
Windows Version Microsoft Windows 7 (6.1) Professional 64-bit Service Pack 1 (Build 7601)

DMI BIOS
vendor American Megatrends Inc.
version F2
date 06/20/2014

Ahci driver used - rcxpahci modified by fernando

Hi

I have windows 7 installed on c drive.
I would like to dual boot with winxp.
I slipstreamed with AHCI driver.
When the windows xp installation menu loads to partition choosing page.
It shows my whole HDD as one partition.
The partition is like - Partition1 Unknown.

WinXP is not able to read the hard drive partition.
How can I fix this ?

Thanks and Regards

EDIT by Fernando: Unneeded blank lines removed (to save space)

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#2 | RE: Dual boot - Windows 7 Already installed - Win XP Partition Unknown datum

Sun Mar 06, 2016 8:38 pm

@sevexps:
Welcome at Win-RAID Forum!

Zitat von sevexps im Beitrag #1
WinXP is not able to read the hard drive partition.
How can I fix this ?

You can fix this issue by installing Windows XP and Windows 7 in LEGACY mode (using the Master Boot Record as partition table).
You obviously have installed Win7 in UEFI mode using the GuiMode Partition Table, but it cannot be read by the 32bit variant of Windows XP.
For details please look >here<.

Regards
Dieter (alias Fernando)

My current System:
MB: ASRock X570 Pro4, CPU: AMD Ryzen 5 3600, System Drive: 500 GB Samsung 980 Pro, Graphics: Sapphire Radeon RX570, OS: Win10 x64 Pro
Donation Link:
If you are satisfied with my Forum activities, you can send a donation to my personal PayPal account by clicking onto >this< link.

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#3 | RE: Dual boot - Windows 7 Already installed - Win XP Partition Unknown datum

Mon Mar 07, 2016 1:38 pm

Thank you for the correct answer to my query,

I have data and OS on these partition , How can I convert to MBR without losing OS and data ?

Regards

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#4 | RE: Dual boot - Windows 7 Already installed - Win XP Partition Unknown datum

Mon Mar 07, 2016 3:11 pm

Zitat von sevexps im Beitrag #3
How can I convert to MBR without losing OS and data ?

Why don't you do a Google search yourself?
I found a lot of guides like >this< one after having done it.

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Working driver found for SB600 RAID AHCI Controller on Windows 10 � � IAStorDataMgrSvc makes error: "Missing localized format string"

Please enter a reason for warning.