refers to formatting, or erasing a disk, deleting all data on the disk

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6
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1answer
2k 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 ...
1
vote
2answers
858 views

Error: “couldn't unmount disk” keeps coming up when formatting external HD to eXFat

I have a WD "my Passport" external HD that is currently formatted for a PC and I would like to format it to eXFAT. Every time I hit "erase" in disk util it just comes up with the error "couldn't ...
1
vote
2answers
5k 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 ...
1
vote
1answer
28 views

Format SSD and restore TM backup

My SSD stopped mounting by itself on boot. So I booted into Single User mode, ran /sbin/mount/ -uw / and exit and it got mounted and I could boot from the SSD. However, after booting all I see is the ...
1
vote
2answers
28 views

View Time Machine backup drive on Windows 7

I use an external hard drive to regularly backup my Mac using Time Machine. However, I wanted to copy the data on this drive to a Windows 7 machine which does not work. It seems, that the PC ...
0
votes
0answers
9 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 ...
3
votes
2answers
3k views

How can I let Windows XP read Mac OS Extended (Journaled) drives?

How can I let another PC using Windows XP (Service Pack3) read Mac OS Extended (Journaled) volumes? Windows XP shows nothing.
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 ...
0
votes
0answers
15 views

Clone whole partitioning scheme to smaller disk

I have the following on my secondary disk. As I am not satisfied with it I would like to clone everything to the other one which is smaller unfortunately. /dev/disk2 #: TYPE ...
3
votes
3answers
1k views

How to format external drive into ZFS?

I've installed MacZFS, I've read the FAQ and Getting Started section, but I've still troubles to understand how to simply format the external drive into ZFS on OSX. I'm confused with zpools, can ...
0
votes
1answer
228 views

External Seagate Hard drive for Mac - Compatibility

I am looking to purchase a Seagate External Hard Drive for my MacBook Air. The products claims it works only with PC (windows), however, I have read multiple places that I can just format the drive ...
0
votes
2answers
76 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 ...
0
votes
2answers
321 views

Maverick's installation: Can i install Mavericks on a non-case-sensitive partition?

I'm trying to install photoshop on my iMac but it looks like I can't install Mavericks if I have a case-sensitive partition. Is it a known bug? Can I do anything to fix it?
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 ...
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: ...
1
vote
2answers
800 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 ...
0
votes
1answer
112 views

Should I format and upgrade to mavericks or upgrade to mavericks and format?

I am planning to upgrade on a Unibody Macbook (2008) to Mavericks. Mountain Lion is already installed and I felt it to be a bit sluggish when I upgraded. I also would like to start anew and clear some ...
0
votes
2answers
752 views

How to erase and reformat SD card to ext3 on my macbook to prepare it for my raspberry pi

I'm trying to reformat my 32G SD card to prepare it for my raspberry pi. My GUI program on my mac does not allow me to format it to ext3 which is what i'm told to reformat it to for my raspberry pi. ...
0
votes
1answer
878 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 ...
0
votes
1answer
223 views

Difference in disk usage MS DOS vs Extended Journaled

Searches on Google and the Apple forums didn't get me any answers or couldn't clarify this for me, hence this question. I have two following external USB hard drives connected to my iMac: "Lacie1" ...
2
votes
1answer
148 views

how to write to a windows formatted disk from OSx?

I have 4 external hard disk formatted on windows in NTFS, but they are lying unused since I bought mac, so I am looking forward somehow I should be able to write to those disc without having to format ...
5
votes
1answer
301 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 ...
4
votes
1answer
23k views

How to securely erase/format an iPhone for resale?

I've read a couple guides that talk about restoring the iPhone to it's base operating system, then syncing three different full playlists of music in order to overwrite any previous personal data that ...
0
votes
0answers
8 views

How To make a FORMATTED FAT32 USB Flash Drive Copyright/Make Read-Only protected on a MAC [duplicate]

We have USB Flash drives formatted in FAT32 but used on MAC and we are trying to lock them so that students can read-only the exe file & the text information but have no access to modifying, ...
2
votes
2answers
183 views

Does it make sense to buy a compatible Mac external disk?

What is the advantage of buying a compatible Mac external disk? Using Tuxera NTFS I can have an external disk for both, the windows partition (or any windows machine) as well as for the Mac one. Does ...
0
votes
2answers
245 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 ...
1
vote
1answer
2k views

Update OS X recovery USB stick with Mavericks

I've got a Snow Leopard 8GB USB stick that I got from my MacBook Air. Now that Mavericks is available, I'd like to update that USB stick with Mavericks. I can't seem to be able to format that disk: ...
1
vote
2answers
3k views

How to partition an SSD that fails with error 69888 - couldn't unmount disk?

I erased the SSD drive in my MacBook and was reinstalling Lion when it failed about 75% through the install. Now in Disk Utility, sometimes I see the SSD drive and sometimes I boot and it's not there ...
0
votes
1answer
395 views

Is it bad to format your ssd many times?

In the past two years, I have formatted my SSD many times and I started to wonder, is it bad? Does it harm your SSD every time you format?
0
votes
1answer
3k views

Error copying large file to usb 16GB Thumbdrive

Trying to copy a file (Win7_IE8.vhd) to a USB drive. The file is 9.07GB in size according to my Mac file info. The USB drive is 16GB. I bought it new 10 minutes ago. This is its first use. I get: ...
0
votes
0answers
56 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 ...
2
votes
1answer
21k views

How to format a disk to NTFS using Mac OS X

I am looking for a simple GUI based way to format drives to NTFS (Windows) on Mac OS X Snow Leopard.
1
vote
1answer
173 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 ...
29
votes
3answers
12k views

What are the differences between journaling HFS+ and non-journaling HFS+?

I'm about to format an external hard disk drive (HDD). What are the key differences between journaling HFS+ and non-journaling HFS+? Apart from the fact that one has journaling and the other does ...
18
votes
5answers
17k views

Lost password on Mac OS Extended (Journaled, Encrypted) Drive. Want to reformat it

I am using a Seagate Free Agent Desk external drive as my Time Machine on a modern iMac running Lion. I made the mistake of encrypting the drive, and I do not remember the password. I dont mind losing ...
3
votes
3answers
3k views

Can I install OS X lion on a disk that is OS X Extended Journaled encrypted?

Just wondering if I can, using Disk Utility, format the hard drive such that it is OS X Extended (HFS+) Journaled encrypted. Will Lion be able to install on that disk?
1
vote
1answer
621 views

Grab list of Stats, Application Data, and Serials off OSX 10.6 to prepare for reformat and fresh install?

I need to reformat my 2007 OSX as it is now returning kernal errors. I want to install everything fresh but I have a lot of software and don't want to sit here making a list of everything installed as ...
1
vote
0answers
179 views

Waiting for disks to reappear on SSD new install

I just installed a new Samsung SSD 840 PRO in an Early 2011 Macbook Pro, trying to format drive and it is stuck on: "Waiting for disks to reappear" What should I do now?
2
votes
2answers
548 views

Mac OS-X disk file format

I need to format an external hard disk on a MacBook Pro (USB2 connection). In the disk utility, Erase tab, I can only choose between these formats: MacOS Extended (Journaled) MacOS Extended ...
14
votes
4answers
6k views

HFS+ case-sensitive or case-insensitive — which type to use for the primary drive partition?

What reasons are there for choosing the case-insensitive version of HFS+ when formatting the primary drive partition? Would case-sensitive not always be the best choice?
1
vote
1answer
556 views

Create partition on MacBook Air that isn't deleted during restore

I have a 20gb file that I need to back up and I don't have an external drive or access to any high-capacity cloud storage but I need to format/reinstall OSX Lion on my MacBook Air. On Windows and ...
5
votes
8answers
10k views

Checking for bad blocks without formatting

My Mac tends to pause every now then when preforming simple tasks such as right clicking, opening menus and typing (It actually just froze when I started typing this question.). I've read in a few ...
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
1answer
608 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
134 views

iPhone wipe out

I have lost and found my iPhone 3Gs. But apparently someone tried to use mine or had some intent to exploit it, and now I am a little paranoid about my iPhone. Fortunately, I have a very recent ...
0
votes
1answer
480 views

Converting format of hard drive

How to change format of external hard drive from ExFat to HFS+ without losing data? What are limits for maximum size of a file on both formats?
0
votes
0answers
1k views

The disk you inserted was not readable by this computer

I am getting a system message from Mac OS x 10.8.2 every time I power on my ICY DOCK RAID enclosure. I have followed the procedure in the manual to the letter. Installed two new 2TB HDDs > Changed ...
0
votes
2answers
15k views

How can I reformat my macbook pro?

I have an 8 months old macbook . It has gone little slow I believe because of me installing VMware . Which I have now removed but still performance is not as good I used to be. I would like to reset ...
3
votes
1answer
240 views

USB Drives always need to be formatted to delete items

I have a MacBook Air running Lion. Issue is I cannot delete things from USB sticks. The icons disappear but if I try to copy something on I get a not enough space error message. I can format the ...
1
vote
2answers
969 views

Lost Time Machine Password - Unable to Format Disk

I lost my password to my Time Machine backup. It's on a Seagate FreeAgent USB drive. I don't mind losing the data, I just can't figure out how to format the drive. I found this thread, however, the ...