[ydl-gen] Re: HFS+ mount is read only -- how to make RW? (YDL
4.0.1)
Danny Hembree
danny-hembree at dynamical.org
Fri Dec 2 18:06:22 MST 2005
Jeffrey, just so you know your not crazy, I'm using YDL 4.0.1 on a dual
processor G5 and cannot mount the filesystem slice from an OSX 10.3.9
server disk.
here's my pdisk
Partition map (with 512 byte blocks) on '/dev/sdb'
#: type name length base (
size )
1: Apple_partition_map Apple 63 @ 1
2: Apple_Boot eXternal booter 262144 @ 64
(128.0M)
3: Apple_HFSX Apple_HFSX_Untitled_2 319910832 @ 262208
(152.5G)
4: Apple_Free Extra 16 @ 320173040
Device block size=512, Number of Blocks=320173056 (152.7G)
# mount /dev/sdb3 /osx -thfsplus
mount: wrong fs type, bad option, bad superblock on /dev/sdb3,
or too many mounted file systems
DeviceType=0x0, DeviceId=0x0
curiously, the boot slice, sdb2 does mount. Perhaps it's something to do
with the journaling ?
On Fri, 2005-12-02 at 15:17, Jeffrey Paul Burger wrote:
> Thanks!... And I'm still in trouble. Here's what I get from pdisk:
>
> Partition map (with 512 byte blocks) on '/dev/sda'
> #: type name length base ( size )
> 1: Apple_partition_map Apple 63 @ 1
> 2: Apple_Bootstrap untitled 2048 @ 64 ( 1.0M)
> 3: Apple_UNIX_SVR2 untitled 394009666 @ 2112 (187.9G)
> 4: Apple_UNIX_SVR2 swap 4080510 @ 394011778 ( 1.9G)
> 5: Apple_UNIX_SVR2 untitled 204800 @ 398092288 (100.0M)
>
> Device block size=512, Number of Blocks=398297088 (189.9G)
> DeviceType=0x0, DeviceId=0x0
>
> pdisk: Bad data in block 2 from '/dev/sdb'
> pdisk: can't open file '/dev/hda' (No medium found)
>
> Somebody off-thread speculated that " it could be with the uid. HFS doesn't
> have the same ownership/permissions structure and the default is that only
> root can write, but you can change this with mount options such as user,
> umask, uid, etc." Unfortunately, this doesn't mean much to me though. But
> since to mount the errant disk still give me "Wrong fs type, bad option,
> bad superblock on /dev/sdb or too many mounted filesystems", I'm thinking
> that I somehow told it that the file system is not HFS+... in which case I'm
> hoping that there's some way to tell it that it is indeed HFS+ and access
> the data again.
>
> Any and all help is greatly appreciated!
>
> Thanks!
>
> Jeff
>
> Date: Thu, 1 Dec 2005 23:47:52 -0500
> From: Eric Dunbar <eric.dunbar at gmail.com>
> Subject: Re: [ydl-gen] Re: HFS+ mount is read only -- how to make RW?
> (YDL 4.0.1)
> To: Yellow Dog Linux General Discussion List
> <yellowdog-general at lists.terrasoftsolutions.com>
> Message-ID:
> <77520bee0512012047m2b611949oa17aa9b3adcb6954 at mail.gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1
>
> Hmm. Not good, but, maybe there's hope.
>
> Ok, I ain't no expert on partitions but shouldn't you have a number to
> go along with your sdb?
>
> In your case, you're on the SCSI bus (right?) and are on the second
> drive (ergo b). Take a look at your partition table using pdisk
> (/sbin/pdisk -l /dev/sdb). What does it say?
>
> In my case my drive resides at hdc and the relevant HFS+ partition is
> #7. So my mount command would be:
>
> mount /dev/hdc7 /mnt/macosx -t hfsplus
>
> So for you it would be something like:
> mount /dev/sdb# /mnt/macos -t hfsplus
>
> I would strongly recommend that you do things read-only until you've
> got the problem licked:
>
> mount/dev/sdb# /mnt/macos -r -thfsplus (NOTE: the space doesn't make a
> difference)
>
> Also, /mnt/whatever is merely your "mount point". You have a "real"
> directory (/mnt/whatever) on your drive and you reference another
> volume to that mount point when you mount the other volume.
>
> Thus, doing hpmount /mnt/macos would do nothing.
>
> PS I'm guessing that hpmount didn't like the fact that you referenced
> your _whole_ drive.
>
> Good luck.
>
> Eric.
>
> On 12/1/05, Jeffrey Paul Burger <jeff at sedona.net> wrote:
> > Red Alert! Now I've lost access to my HFS+ drive from both Linux and OS X!!!
> > Help!!!
> >
> > Background: This is a dual boot G5 running YDL 4.0 and OS 10.4. I'm a Linux
> > newbie. A friend (who no longer lives where I do) gave me the magic to mount
> > the Mac OS disk from YDL at /dev/sdb, so that's the destination I've been
> > using. And I have a "macos" folder in my mnt directory. Until now, I've been
> > successfully mounting and reading from the HFS+ drive using "mount /dev/sdb
> > /mnt/macos -t hfsplus". (Strangely, until I corrected it today, the exec
> > file my friend wrote was missing a space: "... -thfsplus" and it still
> > mounted and read.) Anyway, the problem came when trying to follow
> > instructions from this thread to enable writing to the HFS+ disk from YDL as
> > well.
> >
> > Pursuant to earlier messages in this thread, I found hfsplus on my system
> > and invoked in. The man page essentially says:
> >
> > hpmount [...] source-path
> >
> > Not knowing whether source-path meant /mnt/macos or /dev/sdb, I tried both.
> > I know that hpmount /dev/sdb gave me the following message (hpmount
> > /mnt/macos may have been identical but I can't be sure now):
> >
> > "Warning. You are about to open /dev/sdb for writing. Are you sure you want
> > to do this (y/n)?"
> >
> > I responded affirmatively and received:
> >
> > "hpmount: Neither wrapper nor native HFS+ volume header found (unknown error
> > 4294967295)"
> >
> > I went ahead anyway with the usual "mount /dev/sdb /mnt/macos -t hfsplus"
> > and received:
> >
> > "Wrong fs type, bad option, bad superblock on /dev/sdb or too many mounted
> > filesystems"
> >
> > After trying several variations on this theme (and getting the same error
> > messages), I decided to see if I could boot from that volume normally under
> > OS X. After the initial switch screen for Linux vs. OS X, followed by the
> > gray Apple logo on the white screen, the logo is replaced with a large gray
> > international symbol for "no" (circle with a slash across it). And the
> > circular progress meter below just spins forever.
> >
> > So I now have two problems: 1) how do I get my OS X boot drive back? 2) what
> > did I do wrong (or what do I need to do right) to access this drive from YDL
> > once it's resurrected?
> >
> > Any and all help is greatly, greatly appreciated. And please keep in mind
> > that I only know enough to make myself dangerous (obviously!) and clear
> > explanations are very helpful.
> >
> > Thank you!
> >
> > Jeffrey
>
>
>
>
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