I could be very wrong here, but if I remember correctly, whenever a device is mounted in Linux or Unix, at least part of the link is virtual i.e. the directory for the disk does not actually exist except to be referenced by the operating system. Therefore, when the disk is unmounted surely the system will forget about it as it was never actually there?
Best TC James On 11 Jan 2010, at 16:57, Scott Howell wrote: > Hi Sandi, > > Thanks for the clarification. If I unmount the drive, it no longer can > be referenced by the device node in /dev, which is interesting. It is as > though once unmounted, the OS forgets about it, but I suspect it has > something to do with the disk subsystem and how it handles devices. Well > I'll keep digging because the info is out there somewhere . :) > > THanks, > On Jan 4, 2001, at 3:18 PM, sandi sørensen wrote: > >> first of all, have never used fdisk under osx so i can be very wrong. >> but when i have done it on linux i usually unmount the drive i wanna fdisk >> and then takes contact with it from the dev folder. Therefore i said as i >> did. >> try eventually before you mess with it too see how huge it is with fdisk. >> /sandi >> >> >> >> On Jan 11, 2010, at 7:29 AM, Scott Howell wrote: >> >>> Sandi, >>> >>> Sorry, I'm not clear on what you are saying here. The device, /dev/disk1 >>> does exist, but unlike a "normal" or static /dev file system, I assume that >>> perhaps this works more like the DevFS found in some LInux distros? I have >>> to admit that I am not that familiar with the newer file systems, which is >>> my fault for letting my knowledge get rusty. >>> Can you please clarify what you mean? >>> >>> THanks, >>> On Jan 4, 2001, at 1:41 PM, sandi sørensen wrote: >>> >>>> try getting a hold of it from /dev/ >>>> >>>> >>>> >>>> >>>> On Jan 11, 2010, at 6:17 AM, Scott Howell wrote: >>>> >>>>> James, I perhaps should be more clear. >>>>> >>>>> The issue is I cannot find a way to address the device. To explain >>>>> further, the flash drive when mounted, shows up as /dev/disk1s1. >>>>> However, to properly address the device with fdisk, the device must be >>>>> umounted, but when attempting to address the device by >>>>> fdisk /dev/disk1 I receive a "file not found" error. So, my assumption >>>>> is that the disk subsystem handles unmounted devices differently than I >>>>> gather most OpenBSD systems perhaps. I of course do not know for sure and >>>>> any thoughts you have would be appreciated. The man page did not provide >>>>> any information on how to address the problem. >>>>> >>>>> THanks, >>>>> On Jan 11, 2010, at 6:24 AM, James & Nash wrote: >>>>> >>>>>> Hi Scott, >>>>>> >>>>>> You wrote: >>>>>>> Have any of you used fdisk from the Terminal in order to set >>>>>>> the boot flag on a file system, which is contained on a USB flash >>>>>>> drive/Thumb drive? I want to creat a bootable usb stick that I can >>>>>>> load a small Linux distro on. >>>>>> >>>>>> I haven't, but I will look into it for you if you like. In theory, there >>>>>> should be no problem using fdisk as the Terminal is pretty accessible >>>>>> with Voice Over. >>>>>> >>>>>> TC >>>>>> James >>>>>> On 11 Jan 2010, at 02:01, Scott Howell wrote: >>>>>> >>>>>>> Folks, >>>>>>> >>>>>>> Have any of you used fdisk from the Terminal in order to set >>>>>>> the boot flag on a file system, which is contained on a USB flash >>>>>>> drive/Thumb drive? I want to creat a bootable usb stick that I can >>>>>>> load a small Linux distro on. >>>>>>> >>>>>>> tnx,-- >>>>>>> You received this message because you are subscribed to the Google >>>>>>> Groups "MacVisionaries" group. >>>>>>> To post to this group, send email to macvisionar...@googlegroups.com. >>>>>>> To unsubscribe from this group, send email to >>>>>>> macvisionaries+unsubscr...@googlegroups.com. >>>>>>> For more options, visit this group at >>>>>>> http://groups.google.com/group/macvisionaries?hl=en. >>>>>>> >>>>>>> >>>>>> >>>>>> -- >>>>>> You received this message because you are subscribed to the Google >>>>>> Groups "MacVisionaries" group. >>>>>> To post to this group, send email to macvisionar...@googlegroups.com. >>>>>> To unsubscribe from this group, send email to >>>>>> macvisionaries+unsubscr...@googlegroups.com. >>>>>> For more options, visit this group at >>>>>> http://groups.google.com/group/macvisionaries?hl=en. >>>>>> >>>>>> >>>>> >>>>> -- >>>>> You received this message because you are subscribed to the Google Groups >>>>> "MacVisionaries" group. >>>>> To post to this group, send email to macvisionar...@googlegroups.com. >>>>> To unsubscribe from this group, send email to >>>>> macvisionaries+unsubscr...@googlegroups.com. >>>>> For more options, visit this group at >>>>> http://groups.google.com/group/macvisionaries?hl=en. >>>>> >>>>> >>>> >>>> -- >>>> You received this message because you are subscribed to the Google Groups >>>> "MacVisionaries" group. >>>> To post to this group, send email to macvisionar...@googlegroups.com. >>>> To unsubscribe from this group, send email to >>>> macvisionaries+unsubscr...@googlegroups.com. >>>> For more options, visit this group at >>>> http://groups.google.com/group/macvisionaries?hl=en. >>>> >>>> >>> >>> -- >>> You received this message because you are subscribed to the Google Groups >>> "MacVisionaries" group. >>> To post to this group, send email to macvisionar...@googlegroups.com. >>> To unsubscribe from this group, send email to >>> macvisionaries+unsubscr...@googlegroups.com. >>> For more options, visit this group at >>> http://groups.google.com/group/macvisionaries?hl=en. >>> >>> >> >> -- >> You received this message because you are subscribed to the Google Groups >> "MacVisionaries" group. >> To post to this group, send email to macvisionar...@googlegroups.com. >> To unsubscribe from this group, send email to >> macvisionaries+unsubscr...@googlegroups.com. >> For more options, visit this group at >> http://groups.google.com/group/macvisionaries?hl=en. >> >> > > -- > You received this message because you are subscribed to the Google Groups > "MacVisionaries" group. > To post to this group, send email to macvisionar...@googlegroups.com. > To unsubscribe from this group, send email to > macvisionaries+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/macvisionaries?hl=en. > >
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