What make\model is it, some have a jumper for firmware updates, if yours has this feature, try changing the jumper?
I have an SSD plugged in but it doesn't show up in Windows (Vista 64). It also doesn't appear in Windows installation either.
It registers in the BIOS and Device Manager so it's plugged in OK.
You say it shows up in Device manager, but not disk management, that's very odd. Is there a yellow or red icon next to the disk in device manager?
No jumpers on the M225. And I doubt it's firmware either.
Are you running it on the UD5? Is it on the JMicron interface controller? If it is, put it on the Intel ICH10R SATA port.
I've the same motherboard and it should work fine on that controller in IDE, AHCI or RAID - just like any HD would.
If that doesn't work I'd suggest it needs an RMA.
I checked again and now it is showing in Disk Management...
But not properly, as you will see here:
EDIT: The screenshot has been shrunk, but basically it doesn't show up under the volume tab, but does in the list below.
In Device Manager, there is no explanation mark or anything.[/QUOTE]
Rclick > New partition
Thanks for the advice. Is that a specific SATA port then? I have tried in one of the red sockets, and in one of the yellow ones. Neither worked.