Unable to erase windows ntfs partition thru mac using disk utility
i connected my desktop hard disk to my mac. i am not able to delete any files from the Windows NTFS partition. in disk utility the erase option is greyed out.
please help.
thanks.
NTFS is a read-only filesystem to OS X. You can read and copy files from an NTFS formatted drive but you cannot write to one.
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Partitioning my iPod using Disk Utility help?
Hi there.
I'm trying to partition my iPod so I can back up some stuff (I lack an external HD) but every time I click on the partition tab I get "Disk Utility has lost its connection with the disc management tool and cannot continue"
Yes, I've completely deleted iTunes and all those pkg. files, still doesn't work. I've honestly no idea what to do next! It's driving me mental.
Please help, thanks!I don't know if you are aware that partitioning the iPod means it loses it's ability to play music?
http://support.apple.com/kb/TA26466?viewlocale=en_US
You can store files on the iPod without the need to partition by simply enabling disk use. Although I would caution that the iPod is not really a reliable enough device for long term back up purposes.
http://support.apple.com/kb/HT1478?viewlocale=en_US -
Partitioning error when using Disk Utility
To better facilitate backups, I have decided to create a dedicated partition on my external hard drive for Time Machine to use. This is a 300GB disk (don't laugh) with 116 GB of music on it (mostly in the iTunes library) plus some other original AIFF files. Disk Utility reports that there is 163 GB of free space on it. When I try to create a partition of about 100GB (or even 75) it gives me the "Partition failed with the error: No space left on device". I get this even if I just try to resize the original partition. I tried rebuilding the directory with Disk Warrior and it didn't help. If I give it a small enough partition to try- say 25 GB or so- it will work. Much above that though, and it always gives me the "No space" error.
I should mention that this disc, without any partition, was used for a while as the Time Machine backup disc. I don't remember why we stopped backing up, but I think it had something to do with running out of space.
I told Time Machine to use the (unpartitioned) disc once again as the backup disc, and it started backing up to it. I stopped it before it got too far.
Could there be files on there that I can't see that are taking up space? I did the "Erase free space" thing in Disk Utility but that didn't seem to clear out any more space. Like I said, it reports that there is 163 GB of available space.
I need to be able to Time Machine the startup drive so that I can install Snow Leopard and also re-do the Boot Camp thing so I can re-install Windows XP, as my wife will have a need to use the dark side for work starting next week. I'm trying not to spend any money, so getting another drive isn't really an option and neither is getting another partitioning utility, as they seem to run about $40-$50 dollars or so, and I can't be sure that they will work either.
Any ideas on this?
Thanks-
ValMost likely issue is fragmentation. Clone it to another and then restore it after erasing. That will defrag the disk. BTW, TM usually needs about three or four times the size of what it's backing up. I suggest popping for another ext HD; they're relatively cheap: <$100 USD. for 500-1,000 GB.
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Can't partition free space using Disk Utility
So something went wrong when I tried to bootcamp.
Now the situation is following:
1) I can't install Windows using USB stick, it says that the free space is in GPT;
2) I can't partition the free space with Disk Utility, tryied it also with recovery mode, the apply button is clickable and active, but it does nothing, it just stays like so and when I exit from Disk Utility it asks if I want to quit without applying but it doesn't work.
So basically I have wasted 20GB of space and can't do anything with it.
I don't want to format the hole disk, are there any other workarounds without need to reinstall OSX?
I have MacBook Pro 13" Retina (late 2013), 128GB SSD, 8GB ram.markov-mac:~ markov$ diskutil list
/dev/disk0
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *121.3 GB disk0
1: EFI EFI 209.7 MB disk0s1
2: Apple_CoreStorage 100.3 GB disk0s2
3: Apple_Boot Recovery HD 650.0 MB disk0s3
/dev/disk1
#: TYPE NAME SIZE IDENTIFIER
0: Apple_HFS Macintosh HD *100.0 GB disk1
markov-mac:~ markov$ diskutil cs list
CoreStorage logical volume groups (1 found)
|
+-- Logical Volume Group 0F0D9268-58FC-4832-8FCB-4A11FB5675F6
=========================================================
Name: Macintosh HD
Status: Online
Size: 100335546368 B (100.3 GB)
Free Space: 15724544 B (15.7 MB)
|
+-< Physical Volume 9B8968BE-CE97-4A66-B5B3-31B4EB87E21F
| ----------------------------------------------------
| Index: 0
| Disk: disk0s2
| Status: Online
| Size: 100335546368 B (100.3 GB)
|
+-> Logical Volume Family B29C277A-660B-41C4-8F5C-A1C5FB01B60F
Encryption Status: Unlocked
Encryption Type: None
Conversion Status: NoConversion
Conversion Direction: -none-
Has Encrypted Extents: No
Fully Secure: No
Passphrase Required: No
|
+-> Logical Volume 6736784D-A946-4EBF-BBA2-BC7DDC6C4EDE
Disk: disk1
Status: Online
Size (Total): 99999997952 B (100.0 GB)
Conversion Progress: -none-
Revertible: No
LV Name: Macintosh HD
Volume Name: Macintosh HD
Content Hint: Apple_HFS
markov-mac:~ markov$ mount
/dev/disk1 on / (hfs, local, journaled)
devfs on /dev (devfs, local, nobrowse)
map -hosts on /net (autofs, nosuid, automounted, nobrowse)
map auto_home on /home (autofs, automounted, nobrowse)
map -fstab on /Network/Servers (autofs, automounted, nobrowse) -
I am unable to mount my NTFS partition after the last update
I usually mounted my NTFS partition with the "gnome-disk" utility. It works no longer, only if I start it with "sudo". But in this case the mount point will be in a directory called "root" and this cause several problems, eg.: old hardcoded paths stop working in scripts. What can I do to make the gnome-disk utility work as an ordinary user.
Thx, maybe I could use the fstab to mount the partition, am I right? But I don't know how to do it properly, because when I tried it in the past native hungarian characters iny the file and directory names always caused problems. If I somehow could capture the command sequence which the gnome-disk utility passes to the kernel / bash, would be helpful.
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Wiping free space on Lion using Disk Utility Erase Free Space
I'm using Lion (OS X 10.7.3) on a late 2011 MacBook Pro.
FileVault is active.
I tried to erase free space on my HD using Disk Utility. It started by creating a temporary file and presented me with an indeterminate indicator-bar (one that looks like a barber pole). Activity Monitor showed an average CPU utilization of 2% by Disk Utility but disk activity was normal and usage stayed constant.
I left this process on for about twelve hours but Activity Monitor showed nothing new and the DU indicator-bar stayed indeterminate with Creating Temporary File.
I tried to skip this DU process and was presented with another indeterminate bar: Skipping. Again, AM showed nothing new so I force-quit DU and used sudo find / -type f -size +500M to see if any temporary files were created. I did not find any new files.
I rebooted and tried it from the terminal: sudo diskutil secureErase freespace 1 /Volumes/Macintosh\ HD. The result was the same: No progress.
BTW, if you run the above command, make sure you include the freespace portion. If you don't, diskutil will happily start securely erasing the entire disk.
Not being able to wipe free space using DU may have something to do with FileVault being active. Can someone confirm this?
What I love about working on a Mac is I have a Unix-based computer that I can tinker with. So I was able to wipe free space manually: dd if=/dev/urandom of=~/DELETEME followed by srm -s ~/DELETEME.
Hope this helps someone.Bidit Mazumder wrote:
BTW, if you run the above command, make sure you include the freespace portion. If you don't, diskutil will happily start securely erasing the entire disk.
Why we don't mention such terminal commands around here. -
I erased my windows partition using disk utility then realized I should have used boot camp, because now I can't resize the original partition and seem to be stuck with a ghost unusable space. Boot Camp now doesn't give me the option to install or remove windows partition.
Hi, Ralph,
The problem is that I did erase the partition, using disk utility, but I can't go back to my original disk size pre-partition, as disk utility won't let me do it and gives the message "Couldn’t modify partition map because file system verification failed." When I try to use Boot Camp Assistant it won't let me select the third option to remove windows. -
Resized partition using Disk Utility and now Windows 7 will not boot
Hi,
Hopefully someone can help me!!
I had previously used Boot Camp to install Windows 7. However, I later realised I had not given myself anywhere near enough disk space as I started using Windows for things I hadn't originally planned on using it for.
Anyway, long story short, to solve the problem I uninstalled some applications on my Mac OSX and used Disk Utility to decrease the size of my Mac partition. My plan was then to reboot to Windows and use a Windows application to increase the size of the Windows partition. However - I coudln't even get that far.
Upon decreasing the size of my Mac partition (succesfully) I restarted my Mac in order to boot to Windows. However, I was greeted with a message along the lines of "unable to boot to Windows please insert boot disk and press any key" (I can't remember the exact message).
I was wondering if anyone knows of any way to restore my Windows partition, retaining all of my previously saved files on my Windows disk. It's probably a long shot, but the thought of losing everything I have been working on for the last few months is a sickening one.
What does give me a bit of hope is that, if I click Boot Camp it seems to recognise that Windows 7 is installed as the option that appears is to uninstall it.
Furthermore, if I view partitions in Disk Utility, a "DISK0S4" is listed. However, it's only at 20gb - if this WAS my BootCamp partition previously, it was originally at something around 60gb (I think - either way, definitely bigger than 20gb!).
On top of this, my current Macintosh HD parition is at 260gb and with the DISK0S4 partition at 20.21gb, there seems to be some space missing... I'm hoping this is the files I've been working on over the last few months!
Anyway, I've done some searching on the net and it *seems* that GPT fdisk *might* be my savour. I've downloaded it but have no idea how to use it and don't plan on playing about with it as I could no doubt do some real damage. If it is likely to solve my problem however, I'm certainly more than capable of being walked through what I need to do.
Please help!Hi Christopher,
I also have problems with Windows rebooting after partition resize trying to reduce Mac side and increase Windows side. I do not see the BootCamp partition labelled as such while running disk utility. The Windows partition shows up when I boot up while pressing the ALT key. However, when I try to run Windows, it says " error loading operatig system".
I also followed instruction and went through to run gdisk successfully. Results towards the end.
What can be done? Windows still does not boot and It shows ? Suspicious MBR at sector 0.
Below is information based on typical questions you ask.
diskutil list
/dev/disk0 #: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *120.0 GB disk0
1: EFI 209.7 MB disk0s1
2: Apple_HFS Macintosh HD 78.5 GB disk0s2
3: Apple_Boot Recovery HD 650.0 MB disk0s3
4: Microsoft Basic Data 31.7 GB disk0s4
sudo gpt -r -vv show disk0
gpt show: disk0: mediasize=120034123776; sectorsize=512; blocks=234441648
gpt show: disk0: Suspicious MBR at sector 0
gpt show: disk0: Pri GPT at sector 1
gpt show: disk0: Sec GPT at sector 234441647
start size index contents
0 1 MBR
1 1 Pri GPT header
2 32 Pri GPT table
34 6
40 409600 1 GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B
409640 153240016 2 GPT part - 48465300-0000-11AA-AA11-00306543ECAC
153649656 1269544 3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC
154919200 17628896
172548096 61892608 4 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7
234440704 911
234441615 32 Sec GPT table
234441647 1 Sec GPT header
sudo fdisk /dev/disk0
Disk: /dev/disk0 geometry: 14593/255/63 [234441648 sectors]Signature: 0xAA55
Starting Ending
#: id cyl hd sec - cyl hd sec [ start - size]
1: EE 0 0 2 - 1023 254 63 [ 1 - 172548095] <Unknown ID>
*2: 07 1023 254 63 - 1023 254 63 [ 172548096 - 61892608] HPFS/QNX/AUX
3: 00 0 0 0 - 0 0 0 [ 0 - 0] unused
4: 00 0 0 0 - 0 0 0 [ 0 - 0] unused
sudo gdisk /dev/disk0
GPT fdisk (gdisk) version 0.8.7
Warning: Devices opened with shared lock will not have their
partition table automatically reloaded!
Partition table scan:
MBR: hybrid
BSD: not present
APM: not present
GPT: present
Found valid GPT with hybrid MBR; using GPT.
Command (? for help): r
Recovery/transformation command (? for help): h
WARNING! Hybrid MBRs are flaky and dangerous! If you decide not to use one,
just hit the Enter key at the below prompt and your MBR partition table will
be untouched.
Type from one to three GPT partition numbers, separated by spaces, to be
added to the hybrid MBR, in sequence: 4
Place EFI GPT (0xEE) partition first in MBR (good for GRUB)? (Y/N): y
Creating entry for GPT partition #4 (MBR partition #2)
Enter an MBR hex code (default 07):
Set the bootable flag? (Y/N): y
Unused partition space(s) found. Use one to protect more partitions? (Y/N): n
Recovery/transformation command (? for help): o
Disk size is 234441648 sectors (111.8 GiB)
MBR disk identifier: "DELETED INFO"
MBR partitions:
Number Boot Start Sector End Sector Status Code
1 1 172548095 primary 0xEE
2 * 172548096 234440703 primary 0x07
Recovery/transformation command (? for help): w
Final checks complete. About to write GPT data. THIS WILL OVERWRITE EXISTING
PARTITIONS!!
Do you want to proceed? (Y/N): y
OK; writing new GUID partition table (GPT) to /dev/disk2.
Warning: Devices opened with shared lock will not have their
partition table automatically reloaded!
Warning: The kernel may continue to use old or deleted partitions.
You should reboot or remove the drive.
The operation has completed successfully. -
HOWTO: Resize Bootcamp (NTFS) partition for free using gparted
Hi,
Well, if you find your Bootcamp/NTFS/Windows partition running out of space, you may want to increase it or decrease it. The OSX Bootcamp utility doesn't allow resizing the NTFS partitio nor does Disk Utility. Here is a free solution ...
NOTE: I've tried this on Windows 7 64bit, but it should work with other windows setups in a similar manner.
Requirements:
1. SysRescueCD (for an NTFS capable 'gparted')
- http://www.sysresccd.org/Download
2. rEFIt bootable CD (or install to hard disk, doesn't matter)
- http://refit.sourceforge.net/doc/c1s5_burning.html
3. Windows XP/Vista/7 CD (depends what you've installed)
- just for a quick 'repair' at the end, no reinstall here!
In short:
1 Shrink Mac partition in OSX's Disk Utility
2 Grow the NTFS partition in gparted booting off sysrescue CD (reboot->option key). This may take 30mins to a few hours to complete!
3 Boot the rEFIt CD -> choose "start partitioning tool" -> hit yes when it says it needs to sync the MBR with the GPT.
4 Boot your Windows CD.
Vista/Windows7 CD -> hit the repair option to fix the boot record.
XP CD -> you may need to go to the administrative shell and type fixboot and then fixmbr.
5. Reboot and you should be able to boot into Windows via the option key as before. I liked rEFIt a lot so I installed it to my disk itself. (FYI, I did notice I needed to install rEFIt a few times to get it to show up during boot time)
Message was edited by: SidOnlineOne bug I learnt:
if
1. you set the 'boot' flag on the Windows partition in gparted AND
2. you use gptsync to sync the GPT with the MBR (i.e. MBR->GPT translation)
then
you will find that your Windows partition becomes inaccessible in OS X. Your partition is OK - you can boot in windows etc - OS X just doesn't see it as a NTFS partition.
Solution:
1. Don't enable the boot flag in gparted. Simple, no need to read further.
If you're done it and have been hit by the bug and would like to see Windows/Bootcamp again in Finder, read on...
1. Goto http://www.insanelymac.com/forum/index.php?showtopic=31562, post #9 has a tool to fix it. Download the diskpart.zip file (it's got diskpart.efi)
2. Extract the diskpart.zip file, copy the diskpart.efi to /efi/tools on your OSX volume (default location for hard disk install of rEFIt).
3. Reboot, in the rEFIt menu, select the EFI terminal
4. type fs1: and hit enter. This should take you to your Leopard volume (for me fs0: was the 1st partition (EFI boot partition), fs1: was the 2nd partition (Leopard)
5. type _cd /efi/tools_ and hit enter
6. type diskpart and hit enter
7. As the post linked above says, type
+select <zero-based disk number>+
inspect
+chtype <zero-based partition number> MSDATA+
For me this was
+select 0+
inspect
+chtype 2 MSDATA+
Look at the output of select to make sure you're using the right number - if you have your eyes open it's hard to make a mistake!
Behind the scene details:
Your partition type is set to NTFS in the MBR table (which is why windows can load it up etc) but if you do the above then the partition type in the GPT is written as EFI instead of NTFS (or more accurately 'MSDATA'). This is a bug in gptsync and I believe Chris (writer of rEFIt) is aware of this - at least another post elsewhere made it look like that. I guess you can't blame it since EFI, GPT tools are still in their infancy.
BTW, to sync the GPT with the MBR, there is a tool gptsync. I believe it's a tool from Intel's EFI toobox. It exists as either an efi program (i.e. gptsync.efi, runs when you select it from rEFIt's menu) or as a OSX program (just gptsync, runs when you download it and type 'sudo gptsync'). -
Problems erasing window bootcamp partion using Disk Utility
Hi guys, ive removed my windows partion before in the past without any hiccups, but this time i seem to have run into some problems.
If i go into boot camp assistant, it wont let me proceed beyond the start menu. When i click continue it says
"The startup disk cannot be partitioned or restored to a single partition.
Back up the disk and use Disk Utility to format it as a single Mac OS Extended (Journaled) volume. Restore your information to the disk and try using Boot Camp Assistant again."
So i went into Disk utility to erase the Windows partion, only now i get this message
"Volume Erase failed
Volume Erase failed with the error:
MediaKit reports checksum operation failure."
I dont have any other programs such as diskwarrior, and in the past Disk utilitiy served me well. Im just wondering whats going on here, and if anyone is able to help fix this problem? Thanks in advanceHi thanks for your help man, but i still cant get it to restore the partion. If i go into the partion tab i see my two partions under the Volume scheme... but i cant do anything as it is all greyed out. Would you or anyone else have any recommendations... or should i invest in Diskwarrior? at the moment disk utility is just not working out for me. Thanks
-
How to do revert back to osx from windows
Hi bentheman2120,
If your Mac OS X volume is not showing up in your startup disks, you may need to boot from the recovery partition and use Disk Utility to repair the disk. See this article -
OS X: About OS X Recovery
If that fails, you may need to boot using Internet recovery, erase the hard drive, and start over. See the same article.
Thanks for using Apple Support Communities.
Best,
Brett L -
Viewing disk partitions made using Disk Utility in Windows
So, I took a USB external hard drive and partitioned it into two volumes using Disk Utility. I made sure to format them in MS-DOS format so they are FAT16 and can be recognized by Windows. I then took the hard drive and plugged it into my Windows computer. The first partition showed up just fine in my F: drive, but I'm not sure where the second partition is. When I plug it into my Mac, both volumes appear on my Desktop, but only the first one shows up in the Computer folder of my Windows computer.
Any help would be appreciated.What does it look like in Windows Disk Management?
Click Start (if you're on XP then click run) and type "diskmgmt.msc" without the quotes (on XP click OK, anything after XP click on the program), then in the bottom window (where it says Disk 0 Basic disk etc) find your external drive, what do the partitions look like?
It might be that windows isn't mounting that partition for some reason. -
I have got a new macbook pro 15 with SSD - 512Gig, RAM - 16 Gig, NVIDIA GPU - 2 Gig. I basically work on windows stuff and I heard of the bootcamp support that apple provide to install windows in their models and wanted to try the best APPLE mobile PC.
What I did:
I logged in to windows 8.1 via bootcamp and under disk management tool in windows I partitioned my bootcamp drive to add a new partition. The partition was successfully done but when I tried to bootcamp back to OSx, the diskutility did not recognise the addtional partition that i created, eventually i couldnt logon to OSx. Then I logged back in to windows 8.1 and deleted the partition and tried loggin to OSx. But now the diskutility didnot recognise any of the drives at all, and I ended up earsing all the partitions and recovered OSx via internet.
I guess the partitions cannot be modified outside the OSx itself. So is there a way to partition my bootcamp via disk utility whithout impacting the windows 8.1 which is already installed?
Any one please help.
Thanks in advance,
Sreejesh.After using BootCamp to partition a drive, the partition map is a hybrid that Disk Utility is unable to do anything with safely as far as partitioning goes.
Try Camptune from Paragon at http://www.paragon-software.com/home/camptune/ instead.
Allan -
hi ,]
last n8
i partatioon hard disk and install windows 7 using bootr cam ,
nw wt heppen my mac HD partation dnt start jst gray screen with apple logo appear and then some loading bar heppen and then shurt down
i tried to repair partation using disk utility
bt
cant repaird ..
so wht should i deoo..
my all data are on mac ..i have to back up .
how can iThere is no option for "DVD and CD Sharing" on a 2011 Mini because it doesn't have an optical drive to share. That option is available only on computers with an optical drive to share.
That option is used, on the other "donor" computer with an optical drive that you want to use/share. On the other computer you turn on "DVD and CD Sharing", allowing its optical drive to be shared. Then on the Mini you connect to it with "remote disc".
I believe you're thinking about the "DVD and CD Sharing" System preference in reverse; you activate it on the computer whose optical drive you want to use/share, not on the Mini without an optical drive.
See the following which explains how to set up and use remote disc: http://support.apple.com/kb/HT1777?viewlocale=en_US -
after i bought mac os x lion from web then download , after that to install but when they ask me to choose disk to install i can not choose, it say this disk does not use the GUID partiton table scheme. use disk utility to change the partition scheme. but
after i bought mac os x lion from web then download , after that to install but when they ask me to choose disk to install i can not choose, it say this disk does not use the GUID partiton table scheme. use disk utility to change the partition scheme. but
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