On 30 September 2015 at 19:27, Phil Ashby <phil.alug@ashbysoft.com> wrote:
When this has happened to me (I too have tried to recover too many broken disks for people!), it's usually because the disks share a hardware channel (e.g. same disk controller / SATA driver), and the error recovery mechanism in the kernel is to reset hardware in the chain, so this also affects any device that share the hardware, typically by being locked out until the reset is done.
OK, that sounds plausible. It also (sort of) explains why in some cases I've started to see apparent errors reported on my main drive while trying to deal with issues on a faulty one. Conclusion: a decent USB3 SATA interface maybe? -- Mark Rogers // More Solutions Ltd (Peterborough Office) // 0844 251 1450 Registered in England (0456 0902) 21 Drakes Mews, Milton Keynes, MK8 0ER