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  1. R

    External USB disk, shows "corrupt or invalid GPT detected"

    Given the choice between having the kernel ignore the error, or having the kernel just magically fix everything up, the way that Windows appears to do, I'll take the latter, thank you. P.S. I made some meager effort to try to deduce whether or not the SATA/USB protocol converter in the Patriot...
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    Optimum Block Size when dd from a hard drive to another

    I am in the habit of arriving fashionably late to every party. Sorry.
  3. R

    External USB disk, shows "corrupt or invalid GPT detected"

    Warren, I almost forgot... Regarding the data files that I put on my ftp server, those came from a drive that had been set up as follows. All I did was to boot to/from a FreeBSD memory stick image and then ran the "Live" version of FreeBSD. Using that (and gpart) I initialized a GPT scheme on...
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    External USB disk, shows "corrupt or invalid GPT detected"

    Warren, I changed my mind and gathered the data that you felt would be "interesting". I hope that you will grab it now and analyze it. THAT is something that I really do not have time for, personally. Sorry. The raw dd files can be grabbed here: ftp://ftp.tristatelogic.com/pub/wb/ There...
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    External USB disk, shows "corrupt or invalid GPT detected"

    You said that "FreeBSD follows the GPT standard to the exact letter..." Having personally served on three different standards committees in my lifetime, I really do appreciate the importance of standards. I do however have a pertinent question relating to your assertion... Could you...
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    External USB disk, shows "corrupt or invalid GPT detected"

    I can hear a faint echo of my long gone mother, asking me as a child "So, if Johnny jumped off a bridge, you would too?" Translation: This is one of the absolutely lamest excuses for blatantly broke, non-working software I've ever heard. Meanwhile, in entirely unrelated news... @wblock@, Did...
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    External USB disk, shows "corrupt or invalid GPT detected"

    I'm trying not to be annoyed by this entire ridiculous problem, but so far it's not working. So let me see if I understand this... There is a copy of the GPT at the start of the drive and another duplicate (backup?) copy at the end of the drive? Yes? And if the two don't match then Windows is...
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    External USB disk, shows "corrupt or invalid GPT detected"

    Yes, and then what? Sorry Warren, my plate already overfloweth. I got critical stuff that I've had to let slip already on account of this rubbish. In addition to this, I also still have to find out why plugging and unplugging external USB drives from my shiny new USB 3.0 PCIe card causes the...
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    External USB disk, shows "corrupt or invalid GPT detected"

    Yep, only *some* external USB enclosures implment this weirdness I went back, just to double check myself, and made sure what I was saying before was correct. I started again from scratch. I dd'ed several mebibytes of zeros to the start of a drive. Then I took that drive and wired it...
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    Optimum Block Size when dd from a hard drive to another

    Where is the sources tarball for that? I looked but could not find it.
  11. R

    External USB disk, shows "corrupt or invalid GPT detected"

    I agree that detailed analysis of the contents of blocks, both at the start and at the "end" of a drive, before and after Windows performs its "repair" of the GPT information would be useful to the FreeBSD GEOM developers. I however am not one of those, and barely know my GPT from a hole in the...
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    External USB disk, shows "corrupt or invalid GPT detected"

    [SOLVED] corrupt or invalid GPT detected I have been encountering what looks to be this exact same problem, and I found a rather interesting solution. It appears to me that the problem arises when one uses gpart to set up a GPT partition table on a drive, but specifically ** while it is...
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