It is unlikely the image created for the existing vendor’s solid state storage device will successfully and reliably load on the new vendor’s part. This applies to any storage device using a block based file system (such as FAT or EXT) which is imaged and restored as part of a production process. Our advice – always re-create a new image when switching vendors.
There are a couple of reasons for this. First, if the image size is larger than the total logical block address (LBA) count of the new device, the image load will fail.
Second, if the image size is less than the LBA count of the new device, image load may still fail because the duplicator machine usually does a checksum after the imaging. The checksum is calculated based on the entire device capacity; therefore, even if the image fits on the new device, since it has slightly different capacity than the original device, the checksum will be different and the duplicator machine will report a failure.
The worst case scenario is when the duplicator doesn’t report a failure, but the new part operates significantly slower than its capable or unreliably. Again, our advice – always re-create a new image when switching vendors.
FIXED versus REMOVABLE Mode Configuration
The issue with FIXED versus REMOVABLE mode is related to IDE/ATA devices, such as Compact Flash and PC Cards, which usually come set in the removable mode. This is a factory setting and generally cannot be changed in the field.
Some Operating Systems (like older versions of WinCE and others) will not boot from REMOVABLE drives. Since the default setting for CF and PC Cards is REMOVABLE, the system will not boot.
If an application requires booting from the Compact Flash or PC Card, it is safer to go with the FIXED configuration. For all other applications, it is irrelevant whether the device is FIXED or REMOVABLE. Cactus offers FIXED mode versions of our Industrial CompactFlash and Industrial PC Card products.