OS X :: Partial Zero Pass On Hard Drive?
Jun 24, 2009
Unfortunately I'm having to return my new Mac Pro, one month old. It has logic board problems. Kudos to Apple for their first suggestion. Anyway, I have 4 internal 1TB drives that I need to zero out. One zero pass on one drive takes 3+ hours. I would like to do a 7 pass on each drive, but that would take four days (90 hours) by my count before I could ship it back. And I want my new Mac asap!
Question? The most each drive contained was 500GB's. Can I do a zero pass on a drive and stop it approximately halfway through (hit Skip button) and then repeat the (half) process over again as often as I desire. Will my half used drives and/or data be zeroed out multiple times. If so this would save me many hours of zeroing out half empty drives! In short, what effect does a partial zero pass have on a hard drive?
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Dec 28, 2010
My hard drive crashed so before I sell the laptop, I heard I should do a "7 pass sweep". I'm not sure how to do this from the OS install disk though
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Apr 9, 2012
I have an external hard drive that I use to use with my old PC . On the external hard drive box it says its compatible with both windows and Max os x. I can pass files from my external hard drive to Mac but I cannot pass files from my MacBook Air to my external hard drive. No messages comes up or anything explain why it simply doesnt allow me to do so. What can I do?
Info:
MacBook Air
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Jan 16, 2009
So I may have one of the Seagate hard drives that are failing badly. Haven't heard back from Seagate to see if my drive and firmware is bad, but since I just bought the drive, I'm thinking of returning it.I'm in the middle of a 7 Pass Secure erase on it (1TB). Do people feel comfortable returning a drive after doing that erase? Or should I just forget about it and destroy the drive and chalk it up to a loss?
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Nov 3, 2010
I am planning to change my current HDD drive with new intel SSD, so I need to back up all the files on my current disk. The capacity of my current HDD is 320GB, so I made an equal partition, 160GB-160GB. Since there's just 120GB occupied in my HDD, I assume I can back up it with the alternative partial 160GB, sounds feasible? Another problem, after replacing it with SSD, should I just make the internal HDD external, and plug it to the macbook pro using USB to install all the OS and files?
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Apr 25, 2012
I want to start afresh on my HD, i.e. reinstall from original disks and use Disk Utility to secure erase (via Erase & Install).I've read articles about pros and cons + how to do it. So I think I know how to do everything.However, from my reading I gather that Zero Erase is a single pass random erase whereas 7 Pass is secure erase (and there is a 3 Pass secure erase option nowadays)?That got me wondering - does 7 Pass secure erase make 7 x single passes over the entire disk?If it does, then when the blue bar has extended a bit over a third of the way across the progress monitor (that little bar that indicates time left) it should have made 3 passes, which would be equivalent to 3 pass secure erase?Is that an option?Is it possible to stop part way through an erase (which is part of E & I)? My original disks 1 and 2 have OS X 10.4, with OS X 10.5 included as complimentary 3rd disk (because OS X 10.5 was just released at that time).I gather I need to erase with disk 1, then install disks 1 + 2, then install OS X 10.5.
Info:
MacBookPro3,1, Mac OS X (10.5.8), 15"/ 2.2 GHz Core 2 Duo/ 2GB/ 120GB
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Sep 6, 2009
Today I went to plug in my Lacie 250 GB USB external hard drive into my 13 in. MacBook to get a shirt template for a design I am making. I discovered that the hard drive just would not mount and show on the desktop, and I remembered that this happened a few days before, but all I did was unplug it and plug it back in, and it worked... except that today, that didn't work at all. I tried the other USB port, and the hard drive showed up on the desktop for about a second, and then disappeared. I kept on replugging it back into both USB ports, but nothing happened.
Then I tried to see if it would work on the PC beside me, and it was recognized as an external device; however, a message came up telling me the drive was malfunctioning. I am guessing this is from ejecting it incorrectly (because I am in a hurry to head to my next classes...I use this laptop at school), but I have incorrectly disconnected it before in the past and this problem never happened to me before.
Every single project I have ever created for my design career is on that hard drive, and all I want now is to get my files back. All I need it to do is show up on the desktop for just the right amount of time for me to copy my files onto my computer.
I read online to put it into the freezer for a while and it should mount, but that didn't work. I tried using Disk Warrior, Data Rescue 3, and Tech Tool Deluxe, but the hard drive did not show up on any of those apps.I tried plugging the hard drive into an iMac as well, but it did not show up either.
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Sep 1, 2009
Got a new MBP last month to replace my white MacBook - loving it as an upgrade but one gripe - if I'm sat using it on my knee I regularly hear the "click" type noise of what I imagine is the protection of the hard drive because it thinks it is being dropped.
I never heard this on my old Mac and while it's not a huge issue it is a bit disconcerting, as though I'm being told off for moving it in a fairly responsible way.
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Sep 9, 2009
My PowerBook G4 (Alum) died. I've had it for 4 years, taken it with me to Alaska and all over the lower 48, and have had nothing but happy experiences. I knew she was gonna go, but I was hoping she'd hold on until I could afford a MacBook. Alas, no. The problem appears to be the ability of the logic board to communicate with the hard drive. I can hear the HD spin, but even with Disk Warrior, I cannot locate it. The Mac Geniuses at my local Apple store confirmed this and gave me a shoulder to cry on. I've run Disk Warrior, Disk Utility, and tried finding it using the target disk mode - no luck.
The problem is that I've got 4 years of teaching materials, 6000 songs, and irreplaceable pictures on the HD, so I can't bring myself to just trash it. It's true that you only fail to back up you stuff once. This is my once. I've heard that with PC hard drives, you can just drop the old HD into a USB HD box and use it as an external HD. I can't afford professional data retrevial, and I want to give this option a try if it'll work with a Mac HD. Any ideas or suggestions?
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Jun 3, 2012
How do i play media files from my external hard drive without transferring the files to my mac hard drive? I have a lot of media files and want to be able to play them soley from my external hard drive.Â
Info:
iMac (27-inch Mid 2011), iOS 5.1.1
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Nov 10, 2010
I just tried downloading OS 10.6.5 and partially into the download, it disconnected and failed to complete. I was wondering if the partial download is saved somewhere. The last time this happened to me, it caused a big issue when I tried to finish downloading and install later and I ended up having to reinstall OS X. So... I would like to delete any partial downloads if they exist so that the next download is a fresh copy.
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Aug 25, 2009
I use a hotmail account for personal email. A few days ago Microsoft sent out an update that gave much better integration with Entourage, and I set up the required POP account and all was well. However, thinking I didn't need the previous account any longer I deleted it, and with it, all of my personal saved folders. I have a Time Capsule backup that dates prior to the change. How I might recover just the filed emails that were on my MacBook?
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Feb 24, 2010
I'm having a serious issue here. It's very intermittent which makes it very difficult to "treat."
Every once and a while, I put my MacBook Pro (17" Unibody, 2009, 4GB RAM, 500GB HD 5400) to sleep and when I go to wake it up, you can hear the hard drive spinning up and you can feel the fans (not running fast at all; normal) if you put your hand by the vent... but no display. When I close the screen again, the pulsing light just stays steady. The hard drive and the fans continue to go. They never stop. It's happened ten times in the past month and it's driving me insane. I've found it in the Console, take a look here -- click for large version.
What are your thoughts? What does this mean?
Quote:
0CH1 0HC2 EHC2 HDEF GIGE SATA RP01 IXVE RP04
The only way I can get back to my computer is if I force shut down my computer. I've damaged the hierarchy of files by doing that (spotlight has had to reindex, sometimes I've had to boot up off my Snow Leopard disk and run disk utility to get it back to working).
I have reset the SMC and PRAM. It didn't fix it. Again, it happens so intermittently that I can never point out what causes it, if anything in particular does.
I'm about to sell my computer and I really need to get this fixed. Thoughts, anybody?
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Apr 23, 2012
I cloned the HD using CCC, and TM then tried to do a full backup. This failed after 3 days of trying because the HD is failing. Now I cannot delete the partial backup (26Gb). Trash will not work, MacKeeper Shredder will not work.
Info:
iMac, Mac OS X (10.7.3)
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May 6, 2012
Safari is only loading partial images on various web sites. Oftentimes, it will load half an image and the rest will be gray blocks (almost like it's corrupt).
I've cleared safari plists. Chrome works fine. Restarted my Airport Extreme.
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Nov 22, 2006
My PM G5's Hard Drive has been making wierd noises lately and I'm really beginning to worry that it's failing. How can I be sure?
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Jul 27, 2009
I have an aluminum unibody macbook from October 2008. I'm looking to upgrade the 160 GB hard drive inside to a 500 GB one I'm considering from Newegg. Would it be possible to migrate/copy/clone the entire contents of my current hard drive to the 500 GB one? I also have a section of my current hard drive partitioned for Bootcamp. Would this affect my ability to transfer everything over?
If this is possible at all, how can I go about doing so? If there are steps laid out somewhere, I'd appreciate a referral. Sorry if my question is a little elementary, but I did a search on these forums and also google and nothing really came up
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Sep 9, 2009
I know this is going to be an incredibly easy fix, but I can't find it. The Hard Drive on my new iMac is not appearing on my desktop, nor is it appearing in the "Device" menu in Finder.
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Nov 12, 2009
if i delete files off my internal hard drive (Macintosh HD), will it still be on my external hard drive or will it just add to it?
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Mar 9, 2012
I have just installed a new hard drive in my imac intel 20" (2006) and upgraded the memory and now the hard drive does not show up in the 'select destinations' folder of the install program. I can see the hard drive in the disk utilities window however it wont let me do anything.It is a seagate 1TB SATA II drive however it is displaying it as a 7.3 TB.I have tried to erase and partition and get the same error message each time, 'Input/Output error'.
I have tried starting the thing with the install disk which is Mac OS X (Tiger?) which came with the computer
Info:
iMac
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May 30, 2010
My Mac Book Pro has began with a problem. The screen goes partially gray with strips if it has been on without being use for some time. Even if it was in sleep. To fix it I have to either re-star or put it in sleep for few seconds. Please tell me what to do? Is it the beginning of the end? Is it probably the battery old? To much GB used?
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Aug 14, 2010
With all the recent chatter around the 5870 cards, especially the availability and compatibility issues with older than 2009 Mac Pro's, I'm wondering whether OS X is still a viable platform for a 3D graphics artist.....Having only really acquired those credentials a short while ago. The 2 things that are really important for 3d graphics are a decent GPU and as much CPU rendering power as you can get. The 08 Mac Pro had both of these things and was great value but since then things have changed. It's not just the cost of upgrading a system although that's pretty damn high at the moment. It's other stuff like the 5870 having 2 MDP's instead of 1 and an HDMI port, which is in my opinion far more useful. It's all the hassle and limited choices when it comes to upgrading the GPU when you can slot anything into a decent PC rig and just get on with it. It's being able to build a decent core i7 system that can render away and chug out frames without costing as much or more than a decent car. And it's about forced obsolescence....Systems that are only 2 or 3 years old being left out of the loop and the sense that Apple took your extra money in exchange for upgrade potential, and then welshed on the deal.
Conversely, I love the OS X environment. It's stable, keeps out of the way, it's great for video and general digital life management. I don't need to be reminded of the pro's and I am in general an advocate of Macs. If I didn't do 3D graphics, I'd buy an iMac and be very happy but that just doesn't cut it in the 3D world. So I'm coming to the conclusion that my next big system purchase in a year or so is going to be a PC again. I envisage working on that during the day and having my Macbook open beside it for email and iTunes etc (ie, all the fun nice stuff) and then when the working day is done, firing up the MP or plugging in the MBP to the big screen for "everything else" like music, video etc....
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Oct 14, 2009
with cloning/copying the content one an external hard drive onto a new external hard drive. Basically, I have a 500GB FW400 drive which I use to store my media files. It's full, so I purchased a 1TB FW800 drive to replace it. Obviously, I thought I could simply copy and paste the media files from the old drive to the new one.I cannot copy the media files to my internal drive first as my internal drive is only 250GB and nearly full itself.I have used Disk Utility to attempt to close the old drive to the new drive, but keep getting "insufficient space" errors.
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Mar 31, 2012
Recently I bought 2 identical WD Scorpio Blue 1TB hard drives for my macbook pro 13 inch 2010. My aim is to replace the internal hard drive with one of the two I just purchased and use it as my system drive with Lion, Windows and Data partitions. And for the other hard drive I want to use it as a full disk back up for the internal drive (now 1TB hard drive). After I was done with setting up both windows and mac and data transfer, when I booedt into the recovery partition from the internal drive to clone the drive to the external drive, the disk utility gave me this error (Could not validate source - error 254). I also tried using Carbon Copy Cloner but it only could clone partitions, not the entire drive. Yesterday I downloaded a copy of Clonezilla. It worked fine until it had to clone an exFAT partition (my data partition). The exFAT partition appeared as 'RAW' partition in clonezilla. As a result, the whole partition appeared to be full and clonezilla had to copy every single blocks of data in that partition and the estimated time remaining was about 30 hours. So clonezilla is out too. Just want to ask if there is any program/application (bootable or not) which allows can do a full disk clone to an external hard drive.
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Sep 9, 2014
Macbook Pro 17" Early 2011Â
Notes. Failed HDD ASD Test.  A new hard drive was installed in September of 2011 after the previous hard drive failed. Having worked well until now the system seems to give the same problems as it had previously. I am wondering if this is a compatibility issue as others have pointed out. Â
I have been told by the technician my only option is to replace the entire hard drive again for the second time with a new one. However to my understanding a ASD test is very specific and this my not be necessary? Further I am attempting a final backup just in case. I don't have to take it in where I could just back it up myself without the system shutting down.
Info:
Mac Pro
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Nov 4, 2009
This appears to affect only one of several calendars I maintain in iCal. When I search for a keyword, I get results only up through June 09. Have tried deleting iCal-related prefs in home library. Have run Disk Utility thrice.
IMac7,1
OS 10.5.8
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Oct 20, 2009
A colleague of mine's MacBook Air (rev b) has suddenly started having an issue with its keyboard - the middle row of keys doesn't response. She has tried rebooting, etc, and the problem continues. No liquid has spilled on the keyboard, and there's no aesthetic reason.
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Dec 29, 2009
I need to do a clean install of Snow Leopard on my machine, but don't want to restore everything that is on my time machine. I have purchased much shareware software that I don't currently need and don't want hogging disk space.
Is it possible to do a partial restore of selected programs and their settings, or is it an all-or-nothing affair?
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Apr 27, 2010
Did a clean install the other day to see if that'd help out my system's performance. Seems like it might just have done that.
1. Since a clean install helped me out, I guess it wouldn't be a good idea to do a full Time Machine restore. Or can I safely do that (since that would kinda be the easiest thing to do)?
2. If not, how do I restore all my settings and stuff. What about the programs that aren't just DMG files but have installed some of their stuff in some other folders?
3. I'm especially concerned with my iTunes library - since I sync it with my iPhone. How do I easily and fully restore that?
4. After solving all of this, how do I get my Time Machine back up running - without it starting "all over", as if it was a new machine?
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Jun 5, 2014
I have been using a 1 TB Iomega portable HD as my external HD for Time Machine backups of my early 2011 17" MacBook Pro with a 750GB Internal HD with only 190GB utilized. I just got a Time Machine message:Â
1) that backup couldn't be performed because of HD problem, and
2) to repair the HD with Disk Utility.
I ran DU Repair Disk and got the following Red Type messages interspersed between normal lines of DU activity reports:
"Invalid Sibling link"The volume Iomega_HDD could not be repaired."Error: Disk Utility can't repair this disk. Back up as many of your files as possible, reformat the disk, and restore your backed-up files."Â Â
Can I recover the original and older time machine backups from my ext. HD in a procedure that would allow me to continue backing up with TM but restarting with the most recent recovered "uncorrupted" TM backup as the base, thus allowing me access to older backups?
Or is my ONLY alternative to start Time Machine afresh with a full backup today (on a new ext. HD!), and just deem all those valuable Time Machine backups as lost forever?
Info:
MacBook Pro, Mac OS 8.6 or Earlier
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