Disabling Write Cache on all hard drives

[vickerps]

Does anyone know of a way to script the disabling of write cache on all hard drives in Windows XP. I tried googling it and the only hit i have found is how to do it on a linux system.

[99ojo]

Does anyone know of a way to script the disabling of write cache on all hard drives in Windows XP. I tried googling it and the only hit i have found is how to do it on a linux system.

Hi,

You have to change the following RegKey:

HKLM\System\CurrentControlSet\Enum\IDE\<yourDiskName>\<serial no>\Device

Parameters\Disk\UserWriteCacheSetting = 0x0

0x0 = disable and 0x00000001 = enabled. It is a REG_DWORD.

;-))

Stefan

Edit:

SCSI Disk:

HKLM\System\CurrentControlSet\Enum\SCSI\<yourDiskName>\<serial no>\Device

Parameters\Disk\UserWriteCacheSetting = 0x0

FibreChannel Disk:

HKLM\System\CurrentControlSet\Enum\VPATH\<yourDiskName>\<serial no>\Device

Parameters\Disk\UserWriteCacheSetting = 0x0

iSCSI Disk:

HKLM\System\CurrentControlSet\Enum\SCSI\<yourDiskName>\<serial no>\Device

Parameters\Disk\UserWriteCacheSetting = 0x0

Edited July 9, 2009 by 99ojo

[vickerps]

Thanks for the reply 99ojo

sorry should of said that i knew about the reg thing however it only work if you know what <yourDiskName>\<serial no> is going to be as i have to do this on 100 of PCs the hard make could be different.

is there anyway autoit could seek out what <yourDiskName>\<serial no> are present?

or does anyone know of another way?

Thanks for all you help so far much Appreciate.

[99ojo]

Thanks for the reply 99ojo

sorry should of said that i knew about the reg thing however it only work if you know what <yourDiskName>\<serial no> is going to be as i have to do this on 100 of PCs the hard make could be different.

is there anyway autoit could seek out what <yourDiskName>\<serial no> are present?

or does anyone know of another way?

Thanks for all you help so far much Appreciate.

Hi,

<YourDiskName> has always Disk in the Reg Main Key. The serials are all beneath this key.

Have a look at function RegEnumVal.

So you read all RegKeys above HKLM\System\CurrentControlSet\Enum\IDE.

Use function StringInStr and look, if Disk is a part of the reg key.

If yes use RegEnumVal again to read out serialnumbers of Disk and set the wanted RegKey

;-))

Stefan

[rainmakers99]

I know it is a bit late but you could get the dskcache tool from microsoft and run it with the right switches

http://support.microsoft.com/kb/Q811392

[BrewManNH]

A bit late?

It's been 3+ years since this was last commented on.