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Unable to create partition in Windows 7 setup with existing XP partition

Joined
Oct 1, 2010
Messages
2,365 (0.44/day)
Location
Marlow, ENGLAND
System Name Chachamaru-IV | Retro Battlestation
Processor AMD Ryzen 9 5900X | Intel Pentium II 450MHz
Motherboard ASUS ROG STRIX X570-F Gaming | MSI MS-6116 (Intel 440BX chipset)
Cooling Noctua NH-D15 SE-AM4
Memory 32GB Corsair DDR4-3000 (16-20-20-38) | 512MB PC133 SDRAM
Video Card(s) nVIDIA GeForce RTX 4070 FE | 3dfx Voodoo3 3000
Storage 1TB WD_Black SN850 SSD (OS), 3TB Toshiba (Storage), 8TB Seagate FireCuda/2TB WD_Black SN580X (Steam)
Display(s) Samsung Odyssey G5 27" @ 1440p144 & Dell U2412M @ 1200p60
Case SilverStone Seta A1 | Beige box
Audio Device(s) Creative Sound Blaster AE-7, Edifier speakers, Grado Labs SR80 X headphones | Sound Blaster AWE64
Power Supply EVGA Supernova 750 G2 | 250W ASETEC
Mouse MX Master 3S| Microsoft Serial Mouse v2.0A
Keyboard Vortex Race3 | Dell AT102W
Software Microsoft Windows 11 Pro | Microsoft Windows 98SE
So this computer I bult recently was intended to dual-boot with XP and 7. I created an 80GB partition in the XP setup on my RAID0 array, but when I came to try to install 7 it refused to create a partition. I've not had this problem before. Can anyone shed any light?
 
So is XP the primary OS?
 
Yes. In the past, it's just installed fine and I've been able to dual-boot both XP and 7. But for some reason, this time it just won't let me create a second partition in the Win7 installer.
 
Why not boot to Win XP and create all you partitions pre-install.

RAID array ? Outside very specialized applications I have yet to see any advantage in RAID 0 and numerous disadvantages. Every 3 years or so I give it a whirl and wind up breaking the array after 3 months or so ... last effort was twin SSDs in RAID 0 and twin SSHDs in RAID 1. Both arrays would routinely disappear, performance was slower not faster in things actually done and Samsng offers no ech support for RAID 0.
 
Would that work? Windows 7 likes to create a hidden partition for essential boot-related files, I don't think I could do that and have it work.
 
Would that work? Windows 7 likes to create a hidden partition for essential boot-related files, I don't think I could do that and have it work.
It should work. The files that are usually on the hidden partition will be put on the Windows 7 partition if the hidden partition is not available.
 
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