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[Hardware DYI] Why my new WD SATA2 500G is not recongized by windows?
WestDigital Second Generation Serial ATA hard drives use autospeed negotiation. This enables Second Generation Serial ATA hard drives to automatically detect the motherboard data transfer rate, making it backward compatible with First Generation Serial ATA data transfer rates. However, because this technology is so new, some older First Generation Serial ATA controllers are unable to support autospeed negotiation and cannot recognize the drive. This “drive not detected” condition occurs when a chipset is incapable of correctly negotiating the data transfer speed with a Second Generation Serial ATA hard drive. below listed chipset thta will have problem to recognize Sata2 harddisk.
- VT8237
- VT8237R
- VT6420
- VT6421L
- SIS760
- SIS964
[HW TIPS] How to Recover Corrupted Boot Block(BIOs)?
AWARD Bootblock recovery:
That shorting trick should work if the boot block code is not corrupted, and it should not be if /sb switch is used when flashing the bios (instead of /wb switch).
The 2 pins to short to force a checksum error varies from chip to chip. But these are usually the highest-numbered address pins (A10 and above).These are the pins used by the system to read the System BIOS (original.bin for award v6), calculate the ROM checksum and see if it's valid before decompressing it into memory, and subsequently allow Bootblock POST to pass control over to the System BIOS.