I know it is not a faulty hard drive or filesystem because I have tried Linux on both hard drives many times and I have formatted many times when I tried even to delete one of the hard drives byte for the bytes and then format it and still had problems. JustAnswer is not intended or designed for urgent matters which should be directed directly by telephone or person to qualified personnel. When I type yes it then just continually enter hundreds of rows with just Y I have left it in minutes nothing happens and the hard drive active light on my laptop is not Flash either so my only option is to turn it off by holding down the power button. Let me know. Ask your own MAC questions customer answer answered 8 years ago I have successfully used only the answers in the past but I dont think that this time as I got a response to my specific questions as applied to the use of UNIX commands to deal with the invalid sibling prob Lem. MEM window: fd000000-fdffffff PreFETCH window: f0000000-f7ffffff PCI: Setting latency hours for device 0000:00:08.0 to 64 NET: Registered protocol family 2 time: TSC Clocksource is installed. I know its not a faulty hard drive or filesystem because Ive tried Linux on both hard drives numerous times and Ive reformatted many times one time I even tried erasing one of the hard drives byte for byte and then formatting it and still had issues.JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.When I enter yes it then just continuously enters hundreds of lines of just y Ive left it for minutes nothing happens and the hard drive active light on my laptop does not flash either so my only option is to turn it off by holding down the power button.Let me know. Ask Your Own Mac Question Customer reply replied 8 years ago I have successfully used Just Answer in the past but I dont think that this time that I got an answer to my specific question which concerned the use of unix commands to address the invalid sibling problem.MEM window: fd000000-fdffffff PREFETCH window: f0000000-f7ffffff PCI: Setting latency timer of device 0000:00:08.0 to 64 NET: Registered protocol family 2 Time: tsc clocksource has been installed.