How to convert UFS to HFS+ on drive?

[G4Grover]

When I last loaded my laptop, I partitioned the drive and created a storage drive titled Media&Docs. For some reason, I chose UFS (new to Unix and Mac OS X)

Now I want to convert the partition to HFS+, however I can't seem to do this. In Bash I have been using the diskutil command however I get an error when I try to erase this partition using HFS+

Here is my config (the partition in bold green is the partition I am interested in converting.)

Jason-Grovers-Computer:~ Jason$ diskutil info /
Device Node: /dev/disk0s3
Device Identifier: disk0s3
Mount Point: /
Volume Name: OSX

File System: Journaled HFS+
Journal size 8192 k at offset 0xa0000
Permissions: Enabled
Partition Type: Apple_HFS
Bootable: Is bootable
Media Type: Generic
Protocol: ATA

Total Size: 19.7 GB
Free Space: 14.5 GB

Read Only: No
Ejectable: No

Jason-Grovers-Computer:~ Jason$ diskutil info /dev/disk0s5
Device Node: /dev/disk0s5
Device Identifier: disk0s5
Mount Point: /Volumes/Media&Docs
Volume Name: Media&Docs

File System: UFS
Partition Type: Apple_UFS
Bootable: Is bootable
Media Type: Generic
Protocol: ATA

Total Size: 35.0 GB
Free Space: 32.7 GB

Read Only: No
Ejectable: No


here is the command I've been using

diskutil erasevolume HFS+ Storage /dev/disk0s5

And the response I get is

Could not unmount disk for making it bootable
error with erase Could not unmount disk (-10000)

Any help or suggestions? I've tried the search to no avail.

This is all on a PB 1.3g with OSX 10.3.4

Thanks in advanced!

Jason

[G4Grover]

Disregard the above - problem solved by booting to the recovery disk and using diskutil on it.

I am still unsure why it couldn't unmount the disk, no system files or installations were on it.

one of those things I guess...

[acme.mail.order]

Next time, try prefixing your system-level commands with `sudo`: only the root user can play with the hardware. This is why Disk Utility asks for your password if you are not an admin user already

[G4Grover]

<smacks forehead>

Doh! That's obvious now that you mention it...

Thanks!

[gctwnl]

Quote: Originally Posted by acme.mail.order Next time, try prefixing your system-level commands with `sudo`: only the root user can play with the hardware. This is why Disk Utility asks for your password if you are not an admin user already

That is not it. I get completely the same, even when using sudo. My guess is that you just cannot do this for a bootable partition on your startup disk.

Even adding 'nonbootable' to the command will not help

$ sudo diskutil eraseVolume 'UFS' Classic nonbootable /dev/disk0s10
Password:
error with erase Could not unmount disk (-10000)

The end situation is that the disk is unounted, but not reformatted. It can be remounted using disktool, but still something like

sudo diskutil eraseVolume UFS Classic /dev/disk0s10

just does not work, whatever I try. And something simple as unmounting a volume, changing the file system from HFS+ to UFS does not work either.

But I did notice that this works:

$ sudo diskutil eraseVolume 'HFS+' Classic nonbootable /dev/disk0s10
Password:
Started erase on disk disk0s10 Classic
Erasing
Mounting Disk

Finished erase on disk disk0s10 Classic

but this doesn't:

$ sudo diskutil eraseVolume 'UFS' Classic nonbootable /dev/disk0s10
Password:
error with erase Could not unmount disk (-10000)

Finished erase on disk disk0s10 Classic

So it is from HFS+ to UFS that does not work. But from HFS+ to HFS+ does work.

[toppledwagon]

A volume that is in use can not be unmounted. In use can include:
iTunes playing music from that volume
Any program with an open file from that volume
Any shell being 'in' a directory on that volume
Any program running from that volume

-Dave