Windows7, TRIM-Command, SSD

Hi!

Is it possible to use TRIM Command if you use the "boot from VHD" Option from Windows 7?

As far as I know a delete IN a VHD should be quite diffrent from a real delete of a file.

If TRIM is not working with a VHD this Option is quite useless in Win7 isn't it?

 

I couldn't find a definitive answer to your question, but the virtual HD should nevertheless be recognized as an SSD simply because it is virtual. Therefore 7 should automatically apply the TRIM command.

 

Have you read this blog?

http://tiredblogger.wordpress.com/2009/08/06/tips-for-bootingusing-vhds-in-windows-7/

Oops - although it's a good read, it doesn't actually talk about TRIM in a virtual drive on an SSD.

 

and this shows one danger of trim: if every os in every configuration always will use trim (even when boot from a cd, or what ever), the state of the disk will always be fine.

but imagine booting once from some cdrom to delete some files, and that cdrom doesn't know trim (most likely), and doesn't report the ssd, that those files got really deleted. the ssd won't ever do anything if all it does is waiting for trim commands.

so giving an ssd cleanup information is all nice and helpful, but the ssd has to perform well even if it doesn't get that information.

mine does => i don't care about trim per se.


question is, does win7 always issue a trim command, even if the device doesn't understand it? if so, it will even trim on the virtual hd (but if that propagates then to the actual ssd is out of my knowledge). else, there 99% sure won't be a trim command on the vhd, as it's no ssd.

 

Hmm okay ... if u boot from a VHD and you take a look @ device-manager (disk section) is there a ssd or only the VHD visible?