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

learn more… | top users | synonyms (1)

2
votes
1answer
6k 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
2answers
2k 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" ...
0
votes
2answers
598 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?
2
votes
2answers
5k 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 ...
2
votes
2answers
4k 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 ...
2
votes
1answer
351 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 ...
6
votes
2answers
1k 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 ...
3
votes
8answers
30k views

Disk Utility won't allow me 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. However, I would like to delete the partition that is ...
4
votes
3answers
4k 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 ...
2
votes
2answers
269 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 ...
1
vote
1answer
3k 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
412 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
1answer
1k 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?
8
votes
2answers
94k 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
283 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
0answers
321 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
807 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 ...
1
vote
2answers
225 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
4k 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
1answer
2k 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
2k 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 ...
1
vote
1answer
1k 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 ...
3
votes
1answer
436 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 ...
5
votes
8answers
34k 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 ...
0
votes
2answers
3k views

external disk formated with NTFS not working on Mac [duplicate]

Possible Duplicate: Hard drive read only access with Mac I bought new 1 TB WD My Passport and format it with NTFS on windows XP. and now when I connect it on mac, I see the drive but I cant ...
0
votes
2answers
4k 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 ...
1
vote
1answer
788 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 ...
4
votes
1answer
39k 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 ...
1
vote
2answers
2k 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 ...
0
votes
1answer
112 views

Read-only on Mac and PC

I need to give out a USB pen drive with my music on it to a load of editors, but I want the drive to be read-only on both Mac and PC so that no one can inadvertently delete the originals. Is that ...
1
vote
2answers
8k 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 ...
1
vote
1answer
374 views

Repartition my existing hard disk

First time Mac user here. I'm quite aware with all the posts here about repartitioning hard disk but I'm quite confused if repartitioning would erase all my data on my hard disk. I recently bought ...
4
votes
1answer
1k views

USB flash drive in ExFat doesn't unmount

I need to transfer large files (9 GB) from my Mac to a PC. I bought a 64 GB flash drive, and it wouldn't work because it was in FAT 32 format and I couldnt transfer such a large file. I reformatted ...
0
votes
1answer
2k views

USB pendrive/disk formatting clarification

I have three doubts regarding USB pendrive formatting. 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 -> ...
1
vote
1answer
887 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
1answer
3k views

When is the GUID partition table (GPT) preferred over Apple partition map (APM) for external drives?

I have seagate external portable hard-drive 1 TB, and I will be using with following Mac's. 13" White MacBook (Intel Core 2 Duo) running Snow Leopard 13" MacBook Air (Intel Core i5) running Lion iMac ...
3
votes
1answer
668 views

Format External Western Digital Drive to be used with only Mac

I recently ordered Western Digital My PassPort Essential. I will get it by tomorrow evening. It comes pre-formatted using NTFS file-type. I need to format it, to be used with My MacBook Pro (i.e., ...
2
votes
1answer
295 views

Why does OS X format MS-DOS filesystems so much faster than Windows does?

When I format a MS-DOS filesystem using Disk Utility in Mac OS X it takes only a few seconds, but when I format a FAT32 filesystem in Windows it takes several minutes. What is OS X doing differently? ...
5
votes
1answer
12k 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
2answers
18k 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 ...
1
vote
7answers
11k 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
5k 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
2k 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
2k 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 ...
22
votes
5answers
34k 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
2answers
5k 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 ...
3
votes
3answers
4k 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?
4
votes
2answers
12k 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 ...
2
votes
3answers
16k 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 ...
2
votes
1answer
1k views

Why is my iPod Shuffle an “Unknown Device”?

Help, I've tried everything. I have an iPod Shuffle 2nd generation and ever since I plugged it into an AC wall charger, my PC has stopped recognizing it. I tried multiple PCs, to ensure it's not my ...