On 03/29/15 22:19, Nick Holland wrote: > On 03/29/15 14:25, Tuyosi Takesima wrote: >> Hi all. >> >> this is my little expirience , it may be useful using openbsd & linux in >> tha same hard disk . > ... >> i want to install openbsd OS into sdb4 . >> But to install OpenBSD directly is risky . >> if i fail , i lose all (including linux) . > > You have added a lot of steps, and I don't really think you improved the > "safety" of the install. You also managed to create a really bad system > with just a root and swap volume (ok, what I call "really bad" is what > Linux does normally, but I don't like to set my goals that low). > > I DO agree with creating the OpenBSD partition in a utility that you are > familiar with and/or one that your other OSs respect, as the process is > a bit tricky, and it is a bad time to be learning new tools (that's > ignoring my other advice of "know all the OSs you are trying to > multiboot). But once that was done, the OpenBSD install will only use > the OpenBSD fdisk partition by default unless you push it elsewhere. > But from that point onwards, no, I do not recommend people follow your > process.
The OP's OpenBSD partition is located above 128G, ie. sector start=842752000, which may have led to the complicated work-around. [1] has a kernel patch (w/ help from krw) I've used while experimenting w/ large disks. However, that patch (doubling to 256G) wouldn't appear to be enough for the OP's problem (842752000 sectors or ~400G). [1]<https://www.marc.info/?l=openbsd-misc&m=138477729520448&w=2>
