3
votes
1answer
54 views

how can I delete a partition (coreStorage logical volume?) from the Terminal?

I finally understood why Disk Utility will not change the partitions on my HDD, even though I added the most recent one myself (maybe significant: to test Yosemite DP) with it. Now I see it says it ...
0
votes
0answers
258 views

Unable to create new partition with Disk Utility on external drive

I'm trying to create space on an external drive to clone my mac as a bootable volume with CCC. With Disk Utility I cannot modify it for some reason (probably because the same disk is used with Time ...
1
vote
1answer
958 views

What's the difference between enabling Time Machine's “Encrypt Backups” option, and encrypting my disk from Disk Utility?

I'm setting up Time Machine backups on a new external hard disk. I chose to first encrypt the disk via Disk Utility: But I also see these options: Is there any difference between an "Encrypted" ...
3
votes
3answers
978 views

Why does my 3TB Seagate HD keep formatting as a Logical Volume Group

This is really annoying. I have a brand new Seagate 3TB 7200 RPM hard drive that I am trying to format/partition in Disk Utility. Every time I change any settings or erase the drive, it changes it to ...
1
vote
2answers
483 views

CoreStorage: what does LVG status 'offline' and PV status 'checking' mean and how can it be fixed?

I converted a partition to a CoreStorage volume using this command: sudo diskutil cs convert disk0s2 -passphrase test123 Now when I run `diskutil cs list' the output shows that I still only have a ...
3
votes
2answers
953 views

What is the layout of a real Apple supplied fusion drive?

Would someone who has a fusion drive that they bought directly from Apple please provide diskutil output sufficient to describe the choices they made? I've seen lots of different sets of advice for ...
1
vote
1answer
780 views

The encryption of an external drive in 10.7.5 does not seem to work. “Conversion Status: NoConversion”

On a Mac running OS X Lion 10.7.5 I have attempted to encrypt an external drive using Disk Utility. Since this is 10.7, there is no option of right-clicking to encrypt in Finder. Also, there's no ...
3
votes
4answers
946 views

What techniques for disk, volume and file system management are possible with OS X, but troublesome within Disk Utility?

In the past, Disk Utility was the best starting point for the vast majority of disk-related tasks. As technologies within (or possible with) OS X have developed – without equal development of Disk ...
1
vote
2answers
3k views

Disk Utility Error “Storage system verify or repair failed”

Installed Lion on a brand new HDD. Boots fine, but when I run Disk Utility on the Media, it reports Verifying partition map for “WDC WD10JPVT-16A1YT0 Media” Checking prerequisites Checking the ...