> 1. Have you tried the PCIe x1 eSATA card that came bundled with your > unit? Does it work properly using that card? Switched from the mobo's built in esata port to bundled card. All 4 sata drives are detected without fault on each of 5 trial reboots. [root@JollyBox ~]# dmesg | grep -i sil sata_sil24 0000:01:00.0: version 1.1 scsi6 : sata_sil24 scsi7 : sata_sil24 Here is the lspci from the bundled card. http://pastebin.com/1TuM99Q4 I had avoided using the bundled card and used the mobo builtin esata + md sw raid as I need the single PCIe slot on my mobo for a graphics card. > 1. Have you tried more than 1 eSATA cable? Sorry, should of mentioned I already tried a new cable before. > 3. Do you have any equipment of any kind, that generates EMI or RFI, in Nothing out of the norm but re juggled everything on the desk to maximise the esata cables distance from even the power strip for the PC. Only electric items within a meter are the disk enclosure and PC itself. -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html