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  • Reading A/UX disks

    From Lewis@21:1/5 to Eli the Bearded on Thu May 28 21:40:34 2020
    XPost: comp.sys.mac.system

    In message <eli$[email protected]> Eli the Bearded <*@eli.users.panix.com> wrote:
    In comp.sys.mac.vintage, André G. Isaak <[email protected]d> wrote:
    This is a longshot, but does anyone know of any utilities (OS X or
    classic - doesn't matter) which can mount and/or extract files from
    SVFS (the A/UX file system) disk images?

    My recollection is that A/UX used a System V filesystem. These days
    "SVFS" maps to a completely different FS. I would test if various free
    unixes like Linux and FreeBSD or emulated older unixes could mount it.

    A/UX used two different filesystems, version 3.0 abandoned the SVFS
    format, but I don't remember what they went to. I know of no way to
    access the old SVFS and all the searches for it bring up the other SVFS
    where the V stands for Virtual.

    I suspect the Mac II emulator is the only way to go. You will need to
    create a disk image in your host OS that is empty and then move the
    files to the empty image in your shoebill emulator. This will need you
    to know exactly how to use dd to first make the image and second copy
    the files to that image.

    Actually, probably make a tar file of the file and then assuming you've
    mounted the image and it shows up as /dev/disk01s1 (I am sure that is
    wrong, but you are looking for the mount of the VOLUME not the actual
    disk) then you do something along the lines of

    dd if=myfile.tar of=/dev/disk01s1/

    Then you mount the image in you host OS and hopefully extract your file.

    I suspect it is a bit more complicated than that. You might need to
    encode the binary tar file into text with something like binhex or
    uuencode before you put it on your image.

    The other workflow is to use DART to make a disk image of your
    disk and copy that to an external drive, but I am not sure that DART
    exists for A/UX 1.1?

    SVFS stood for System V File System and uses an early version of UFS.

    Will A/UX 3.0 convert your file system? or do you not have access to
    that version?

    --
    There is a tragic flaw in our precious Constitution, and I don't know
    what can be done to fix it. This is it: Only nut cases want to be
    president.

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    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From =?UTF-8?B?QW5kcsOpIEcuIElzYWFr?=@21:1/5 to Lewis on Fri May 29 09:07:58 2020
    XPost: comp.sys.mac.system

    On 2020-05-28 15:40, Lewis wrote:
    In message <eli$[email protected]> Eli the Bearded <*@eli.users.panix.com> wrote:
    In comp.sys.mac.vintage, André G. Isaak <[email protected]d> wrote:
    This is a longshot, but does anyone know of any utilities (OS X or
    classic - doesn't matter) which can mount and/or extract files from
    SVFS (the A/UX file system) disk images?

    My recollection is that A/UX used a System V filesystem. These days
    "SVFS" maps to a completely different FS. I would test if various free
    unixes like Linux and FreeBSD or emulated older unixes could mount it.

    A/UX used two different filesystems, version 3.0 abandoned the SVFS
    format, but I don't remember what they went to. I know of no way to
    access the old SVFS and all the searches for it bring up the other SVFS
    where the V stands for Virtual.

    I suspect the Mac II emulator is the only way to go. You will need to
    create a disk image in your host OS that is empty and then move the
    files to the empty image in your shoebill emulator. This will need you
    to know exactly how to use dd to first make the image and second copy
    the files to that image.

    The problem I've run into is that shoebill doesn't seem to want to mount
    any disk images other than the startup image. What little documentation
    that exists for shoebill says that HFS images can be assigned to SCSI
    ID's above zero in the preferences, but I've been unable to create an
    empty image which it recognizes (using dart and diskcopy with various
    options). There's no error message given. They simply don't appear.

    André


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    service.

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  • From Lewis@21:1/5 to [email protected] on Fri May 29 23:57:13 2020
    XPost: comp.sys.mac.system

    In message <rar2ld$2uh$[email protected]> [email protected] <[email protected]> wrote:
    We used to run A/UX on a Quadra 950 but I really don't remember much about its file systems.

    That would have been A/UX 3, and it did not use SVFS.


    --
    'The gods,' he said. 'Imprisoned in a thought. And perhaps they were
    never more than a dream.' --Sourcery

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