I believe I have figured out what the magic number defined in sil.h as uint32_t magic; /* 0x60 - 0x63 */ #define SIL_MAGIC 0x2F000000 It is part of the table returned by the IDE/ATA Identify Drive information command. Specifically, 60h WORD able to do doubleword transfers if nonzero 62h WORD capabilities (see #P0518) Bitfields for IDE capabilities: Bit(s) Description (Table P0518) 13 Standby Timer values used according to ATA standard 11 IORDY supported 10 device can disable use of IORDY 9 LBA mode supported 8 DMA supported So it seems that is why on my 2 older drives the metadata was not detected, they are so old that they don't have the 2Fh in offset 0x63 of the identify data. Of my 3 older drives, one of them has 0Bh and the other 0Fh, and the drive that was detected had 2Fh. Apparently sil metadata is really the IDE/ATA Identify Drive information with some raid information added to the vendor specific fields. -- _______________________________________________ Search for businesses by name, location, or phone number. -Lycos Yellow Pages http://r.lycos.com/r/yp_emailfooter/http://yellowpages.lycos.com/default.asp?SRC=lycos10 _______________________________________________ Ataraid-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/ataraid-list
