Disk Utility's Checksum has no MD5/SHA1 options
Hi Folks
Some one actually asked the same question here four years ago but no direct solution found.
For me, I did see a screenshot here showing more options available under the DU's Checksum menu though I cannot determine the version of that DU and OS X.
Is there anyone here having the same issue? How could we bring the more options back?
BTW, I know the command-link solutions using MD5 and SHASUM, but I do perfer using GUI based DU.
Thanks,
B
Update:
I called Apple Care regarding this and the Apple support kindly told that this feature has been removed from the latest version of OS X.
I didn't believe this. Therefore, I kept googling this and finally found the solution below. I don't know how to say how good the Apple Care support was.
Solution:
1. Close Disk Utility
2. Open Terminal and run the following command line.
defaults write com.apple.DiskUtility advanced-image-options 1
3. Open Disk Utility, and you will see 11 more options under the Images | Checksum menu!
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Prior to this issue, I had tried to download Windows 8.1 using a bootable USB stick and have accidentally deleted my Macintosh HD partition from the Windows install menu by opening up a terminal (fn+option+F10 was the key used to open up this terminal if I remember correctly). I was pretty upset about that, thankfully I have a backup around. Not knowing what to do I proceeded to installing Windows 8.1 anyway. Half way through the installation there was an error which I did not record. I simply exited the installer and proceeded to the Recovery System start up menu and it installed a version of OS X Lion from the internet. Then I installed Yosemite thinking everything is OK.
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I am using MacBook Pro (15-inch, early 2011) with:
2.2 GHz Intel Core i7
4 GB 1333 MHz DDR3
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/dev/disk0
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *750.2 GB disk0
1: Apple_HFS disk0s1 314.6 MB disk0s1
2: EFI EFI 209.7 MB disk0s2
3: Apple_CoreStorage 748.7 GB disk0s3
4: Apple_Boot Recovery HD 650.0 MB disk0s4
/dev/disk1
#: TYPE NAME SIZE IDENTIFIER
0: Apple_HFS Macintosh HD *748.4 GB disk1
Logical Volume on disk0s3
C0E588EC-8B91-43D2-8493-392DB9911387
Unencrypted
and
CoreStorage logical volume groups (1 found)
|
+-- Logical Volume Group CF5FCF1D-64F3-4F5C-8A32-583BDF73FA2A
=========================================================
Name: Macintosh HD
Status: Online
Size: 748741939200 B (748.7 GB)
Free Space: 18960384 B (19.0 MB)
|
+-< Physical Volume 79D6A32D-71A9-479B-82AF-E287ABF820E9
| ----------------------------------------------------
| Index: 0
| Disk: disk0s3
| Status: Online
| Size: 748741939200 B (748.7 GB)
|
+-> Logical Volume Family 5A69641B-025B-438B-A572-AE008B8138B0
Encryption Status: Unlocked
Encryption Type: None
Conversion Status: NoConversion
Conversion Direction: -none-
Has Encrypted Extents: No
Fully Secure: No
Passphrase Required: No
|
+-> Logical Volume C0E588EC-8B91-43D2-8493-392DB9911387
Disk: disk1
Status: Online
Size (Total): 748370657280 B (748.4 GB)
Conversion Progress: -none-
Revertible: Yes (no decryption required)
LV Name: Macintosh HD
Volume Name: Macintosh HD
Content Hint: Apple_HFS
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I see the following message in my Power Book G4 Disk Utility:
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<quote>
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</quote>
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Disk Utility - Partition free space?
Hi all
I'm wondering if Disk Utility (or similar) has the functionality to help me out here...
I have a 120gig fw external drive, currently it has only the one partition of 80gigs on it, the rest is free space (don't ask...).
I would like to format the other 31gigs as a useable partition without erasing the 50-odd gigs of music files that are on the first volume.
If this can't be done, that's really no big issue, I'll just use my iPod as a holding space while I repartition the external, but if it can, then this will be a valuable learning opportunity for me & I'll be happy to know the way around.
Thanks in advance4069
Hi Dr_Dodgy,
You cannot do that with Disk Utility.
There is a third-party application for partitioning a hard drive without losing anything, so I guess this app would be able to do that too.
Not sure, was it "iPartition"? I don't know it anyway, so I can say for sure only about DU.
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Disk Utility 13 cannot create multi-session CDs
With Mavericks/ Disk Utility 13 on a new MBP, the option to leave a disk appendable is always greyed out, on all the CD disks I have tried, including new ones of various national brands.
On an older imac, runnng Snow Leopard and Disk Utility 11.5, following the same procedure, the identical disks are appendable. The older imac has an internal superdive. The MBP has a new external Apple Superdrive.
Mavericks/Disk Utility will create the .dmg, but after clicking burn, there is no multi-session option available...it's there, but always greyed out.
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Disk Utility: Disk Scrubbing ("Erase Free Space")
Hi,
I've logged in case 113969827 the following observation:
In a Macbook 10.5.6 using Disk Utility to Erase Free Space
(Disk Utility / Erase / Erase Free Space) with 7-Pass or 35-Pass
Erase on a / partition with 113GB free of 200GB of a 232GB drive
which is Boot Camp partitioned, the other 32GB going to a
flawlessly-running Windows XP, rarely used, the following
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The free space (87gb) goes to 0gb.
Has anyone else seen this?
Thanks.
Message was edited by: cracraftHey,
Talked with Apple in Texas, Indiana and Silicon Valley on this one
as well Josh...
The bottom line executed so far is:
Shutdown Mac OS X
mount -uw
/usr/sbin/fsck -fy
shutdown -r now
Finder
Disk Utility
Erase / Erase Freespace
Select least secure option and run
Wait until Disk Utility is final (no timing messages)
The above completed okay and your advice to "wait it out"
was right on the ball.
Next, I need to do Erase / Erase Freespace 7-Pass overnight
and then a 35-Pass tomorrow.
The reason I want to do all this heavy "assurance" of deleting
is that if I am required to send this notebook back for the cpu
fan issue, then I certainly want privacy for my disk. But on second
thought, upon receipt, I could just go to the local Apple store and
swap out the disk from one and place it in the new frame and
bootup, retaining my data.
Anyway, thanks for your input today as well as Richard in Indiana,
Matt in Texas, Matt in Silicon Valley.
(There were no errors in the fsck btw though it did say the FS was
modified... odd.)
Stuart
P.S. One would want to do more than the drag-and-drop to the Trash
with Empty Trash btw. I don't think those are assured from undelete
by savvy wizards or other operatives... whereas, 35-pass certainly is
completely secure, assuming the implementation at Apple doesn't
have a backdoor of some kind...
I'll keep this thread updated after the 7-pass / 35-pass which I am
sure just requires extra patience, as you indicated. Thanks!
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