On Dec 1, 2010, at 10:10 AM, Tina K. wrote:

>> /sbin/mount -w /dev/disk1s2 /Volumes/TardisToo
> 
> In single user mode I entered:
> 
> /sbin/mount -w /dev/disk1s3/Volumes/User%20HDD
> 
> and it returned this message:
> 
> "Unknown special file or file system"


%20 for a space is html-ese, in the shell either use a backslash to escape the 
space or enclose it in double quotes "/Volumes/User HDD"

I also ALWAYS forget that mount needs the mount point to exist already.

This thread has the answers in it:

<http://forums.macrumors.com/archive/index.php/t-232302.html>

the mount command needs to be:

mount -w -t hfs /dev/devicenumber /Volumes/Volume_Mount_Point.

(the '-t hfs' bit takes care of the error you're getting, I think. I don't do 
this very often at all, if I'm elbows-deep in single user mode on a machine it 
means Things Have Gone Very Wrong Indeed, and I'm doing something like trying 
to get the mail server back alive while the email-less hordes with pitchforks, 
torches and Blackberrys are battering down the door to the server room)

You have to ensure that the root volume is writeable first, and create the 
Volume_Mount_Point directory.

SO the process SHOULD be (my comments preceded by -- )

-- make / writeable, if needed

mount -uw /

-- Create the mount point

mkdir /Volumes/User\ HDD

-- now mount the volume

/sbin/mount -w -t hfs /dev/disk1s3 /Volumes/User\ HDD

If this doesn't work start to Googling. There's tons of hits on that error and 
most of them look like they're fixable by the -t option, whether it's hfs, ntfs 
or another file system type.

-- 
Bruce Johnson
University of Arizona
College of Pharmacy
Information Technology Group

Institutions do not have opinions, merely customs


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