TRIM with IDE Mode on Windows 8?

[Musafir_86]

Hi all,

-This is my first time posting here (after re-registering because original account had been deactivated).

-On topic: Recently I bought a cheap 32GB KingSpec 2.5" SATA SSD from eBay ($39 with free shipping to Malaysia) and installed Windows 8 Release Preview 32-bit (build 8400) on it. During installation, I had to use IDE mode instead of AHCI because Win8 Setup doesn't recognized the capacity of the disk (it shows 0.0MB - same with Diskpart); Windows 7 SP1 works fine, however.

-CrystalDiskInfo 5.0 shows that this SSD has TRIM feature, and it's enabled on Win8. Being curious, I launched Win8's "Optimize Drives" utility (formerly Disk Defragmenter) and clicked "Optimize all" and the "Current status" column showing the progress! When I checked Event Viewer, it confirmed under Windows Logs>Application>Defrag that the drive "has been trimmed successfully" (or something like that)!

-So, can anyone else confirm this? My system specifications:
HP 6535b (BIOS F.20)
AMD Turion Ultra ZM-87 2.4GHz
3GB RAM
SATA2 port on AMD SB700 (IDE mode)

SSD:
32GB Kingspec KSD-SA25.5-032MJ
JMicron JMF605 Controller (voided warranty to open the casing )
firmware version 120202
4 NAND flash chips (so it's 4-channel, right?).


Regards,
-Musafir_86.

 

[postmortemIA]

yep, 3rd party tools are known to give TRIM support on legacy operating systems and in IDE mode. It just does not work when drives are in soft RAID0.

 

[Musafir_86]

yep, 3rd party tools are known to give TRIM support on legacy operating systems and in IDE mode. It just does not work when drives are in soft RAID0.

-I already know that. What I meant is, previously on Windows 7, AHCI is required fro TRIM to work natively, right? So, it seems now Microsoft has enabled TRIM regardless of the interface in use (maybe PCI-Express SSD too?).

Regards.

 

[Fernando 1]

What I meant is, previously on Windows 7, AHCI is required fro TRIM to work natively, right?

No, on Windows 7 TRIM is active in IDE mode too. Besides the generic AHCI driver named MSAHCI.SYS it's the generic IDE driver named PCIIDE.SYS as well, which supports TRIM.