SanDisk SSD P4 User Manual download pdf (Page 33)

SSD SATA 5000 2.5" Datasheet

Preliminary, Rev 0.2

9. Troubleshooting

9.1 Basic Checks

Most disk problems are caused by improper disk installation. The following

should be checked:

 Cable:

o Improper cable has been used

o Cables are too long to support the transfer rate

o Improper cable connection to the device

 Device connector: Improperly locked

 Power supply: Below SSD requirements

9.2 BIOS Setup

Verify that the disk is enabled in the BIOS. In most new BIOSs, there is

an option for drive auto-identification.

9.3 Slow Drive Performance

Poor disk performance may be due to one of the following reasons:

 The SSD was set in the BIOS to support slower Ultra DMA modes

(UMDA 0 through 4)

 DMA transfer mode may not be enabled in the Windows OS

settings. Windows has a fallback mechanism that causes the disk

operating mode to revert to PIO if too many errors occur.

 Check that Write Caching is enabled in the drive under the category

Properties.

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SanDisk SSD P4 User Manual Page 33