0
votes
0answers
4 views

Partition Table Overwritten by MBR for USB external storage

I was trying to make my SD card writable again on my MBP which I had my 1 TB external storage connected to my Macbook Pro. So I ran the command $ sudo diskutil eraseDisk FAT32 SDNAME-SD MBRFormat ...
0
votes
2answers
65 views

how to create a 128MB HFS+ partition using diskutil

I have a ~ 500GB disk in my new Mac, and I would like to create a 128MB HFS+ (Journaled) partition using OS X, but when I tried to do this earlier today the smallest HFS+ partition I could create was ...
5
votes
1answer
1k views

Stuck in a boot loop after failed update to Mavericks, can't reformat HDD

I recently tried to upgrade a 2008 Mac Pro from Snow Leopard (10.6.8) to Mavericks (10.9.2) using the free upgrade available in the App Store. The upgrade seemed to go without a hitch until the ...
0
votes
1answer
719 views

Disk Utility stuck around 50% when formatting SSD

I bought a SSD drive for my early MacbookPro 2011, since my old HDD was very slow and with crazy IO activity when idle. I started the Internet Recovery Mode and opened the Disk Utility to format the ...
1
vote
2answers
684 views

Which format for external disk for performance?

I'm using OS X Mavericks and just got a new external hard disk. I don't need to share it with a PC (so no need for FAT) but I do want it to have better I/O performance. I'm a bit confused by the ...
5
votes
1answer
287 views

Unable to format pendrive, diskutil error

When I insert my USB Pendrive in my iMac i see this message: I tried to format it both with DiskUtility and with diskutil command in terminal but I get this error: iMac:~ User$ diskutil eraseVolume ...
1
vote
2answers
4k views

Disk Utility won't allow to delete and resize partitions

I'm running OS X 10.9 and I had a linux partition when I updated from 10.8. Since I updated I can't boot on linux, which is no big deal for me. Though I would Like to delete the partition that is left ...
0
votes
2answers
224 views

Delete and merge Partition

My MacBook's HDD has 2 partitions. One has OS X 10.8 installed, the other one 10.9. I'd like to delete the first partition and merge the free space afterwards to the 2nd partition. What's the easiest ...
0
votes
0answers
55 views

10.8.5: Resume Disk Utility after a standby

Is it possible to resume a partition resizing operation after the computer went in standby? I've (sadly, without a choice) used my girlfriend's MBA to resize a partition on a disk. I was on battery ...
1
vote
1answer
166 views

Seagate 4TB, 3,5" / SATA III (ST4000DM000) and SK-3500 Super-S Combo

I bought a 4TB 3.5", SATA III Seagate Desktop HD and put it into a SK-3500 Super-S Combo. My iMac (late 2009) did, however, not detect the HD when I connect it. Since I cannot see it, I am unable to ...
1
vote
1answer
594 views

Can't do anything with external hard drive, “.Trashes” is probably the boogyman

I bought an external Samsung hard drive today. But I'm not able to do anything with it. Here are the problems I'm having: I can't put anything on the hard drive. Finder gets stuck at 'preparing ...
0
votes
2answers
2k views

Can I have an Encrypted Partition in a 2 Partitions USB Stick?

I have a new 16Gb USB key and want to take advantage of Disk Utilities feature to encrypt it, however I do need to move data from Mac to Windows from time to time. Is is it possible to have one FAT ...
0
votes
1answer
967 views

USB pendrive/disk formatting clarification

I have three doubts regarding USB pendrive formatting. 1) Is there is any simple/quick way to format the USB pendrive from MacBook Pro? Now, I am doing this by Applications/Utilities/Disk Utility ...
5
votes
1answer
2k views

Why can't I write to the last block of my SDXC card on my MBP?

I have a 64GB SanDisk SDXC memory card which I would like to use with my MacBook Pro and its SD card slot. However, I am having some trouble formatting/partitioning my SD card and I can't figure out ...
1
vote
7answers
7k views

Partitioning secondary internal hard drive failure

Looks like my 2nd HDD became a brick. I tried to partition it via Disk Utilities/booted from recovery partition/diskutil to no luck! I got vague/strange errors such as: unable to unmount, or: ...
3
votes
3answers
2k views

Secure erase drive in Single User Mode

My 2007 Macbook Pro has suffered from a failure of its GPU and will now only boot in Single User mode. I want to sell it on eBay for spares, but obviously I don't want a hard drive with live data ...
1
vote
2answers
1k views

How can I repair a hard drive that Disk Utility and Disk Warrior can't fix?

I have a Mac Pro running Mac OS X Lion, and one of my hard drives has acted weird since attempting to repair permissions. I used Disk Warrior, but it says the HD can't be rebuilt. When I try to format ...
2
votes
1answer
1k views

External HD Shows up in Disk Utility, but I can't access it

I have an External 1TB hard drive that has been corrupted, it was so corrupt that I had to abandon the files on it. So now I'm simply trying to erase it so I can begin using it again. But here's the ...
3
votes
2answers
2k views

How can I reformat my hard-drive?

I am in Disk Utility under the Erase Tab. The Format section is grayed out even though I have my main disk selected. The only buttons active are Erase Free Space, but I want to reformat the entire ...
4
votes
3answers
9k views

Deleting a partition in Disk Utility fails. (Error: -69879)

This is the output in Disk Utility: Disk Utility cannot modify this disk because it contains CoreStorage physical volumes. Use command line distil instead. The selected partition won't be ...
1
vote
2answers
6k views

Changing a Volume's “Device / Media Name”

I know a Mac volume can be renamed... obviously. But if you look at the output of diskutil you will see that a volume also has a "device name" that corresponds to the name it was given when it was ...
0
votes
1answer
912 views

Disk utility hanging

I'm trying to reformat the hard drive on an iMac G5 prior to selling it. I've booted the Mac from the installation DVD that came with it, opened Disk Utility, and told it to erase the drive using both ...
0
votes
3answers
1k views

Can't format an external HDD :Error: -9944: File system formatter failed

I have MacOs 10.6.6 and a Western Digital external 2.5'' HDD USB 3.0 pre-formatted to NTFS. I try to format the drive do HSF+ with DiskUtility program, but it says: Error: -9944: File system formatter ...