My external seagate thunderbolt adapter SSD drive using thunderbolt disconnects itself after 10.8.1 update

This never happened until I updated to 10.8.1 yesterday on my retina macbook. I have a seagate thunderblot goflex adapter to SSD setup. The SSD just freezes and disconnects after a few minutes when I try to tranfer files. Tried using other ports, restarting, shutting down. Going to try to reinstall 10.8 fresh. Fustrating...

Please copy and paste your post into the Boob Camp forum.

Similar Messages

When I check my boot SSD drive using Disk Utility under Mavericks, I often get "Incorrect number of extended attributes" errors. But if I boot off an external drive and check the same SSD, no errors are reported. Is this a bug in Mavericks?

When I check my boot SSD drive using Disk Utility under Mavericks, I often get "Incorrect number of extended attributes" errors. But if I boot off an external drive and check the same SSD, no errors are reported.
This happens not just with the SSD in my Mac Mini, but with another SSD in my MacBook (both now running Mavericks). So far as I know, all of the kit I am using is in good order (despite the file corruption reports). So I am beginning to wonder if it could be due to a bug in Mavericks? Both SSD drives have been formatted to MacOS Extended (journaled) format. Should I have used a different format, I wonder?
Has anyone else encountered this issue?
Does anyone have a solution?
Or an explanation that might help my investigation of the issue?
Thanks guys,

I understand that the Corsair Force 3 is not one of the SSD drives that are supported on Apple Macs.
I did try downloading and using Trim Enabler, but the error message came up both when it was off and when it was on.
I understand that not everyone thinks Trim Enabler is a good program, though there is a new version out now, so I may give it another try.

Should SSD drives use ASM fine striping instead of coarse?

By default, ASM wants to stripe data files across disks in 1MB chunks. This makes perfect sense for rotating disk drives, with their very limited IOPS rates, but for SSD drives, which can handle 100X more IOPS than spinning disks, wouldn't the 128kb stripe size be better, expecially for relatively small (<1TB) data file sizes?
J
Edited by: user5273070 on Dec 29, 2011 7:37 PM

Agreed, it very much depends on the user needs. For example, I took 10 days of video footage on vacation in Hawaii - 720p at 60fps. The sum size of that footage is 20gb. So it would fit no problem on the 256gb SSD. I could fit several other vacation footages as well, along with some of my animation project footages, on the 256gb SSD. I could be working several of these projects at once if needed. (Although I would eventually move footage to disk backup storage on a server anyway, so it wouldn't need to clutter up the SSD forever.)
So for my usage, terabytes of platter drive arrays for footage is probably not needed. Why not take advantage of fast access times of the SSD for reading footage. Isn't that what folks are doing when they RAID 0 platter drives to hold footage - trying to improve the read speeds for performance? In the past, with SSDs in the $300+ range - might not have made sense to go SSD. But with fast 256gb SSDs going for $150 or lower, if you don't need the platter space, seems like you can get a nice performance boost using an SSD - without having to resort to raid arrays of platter drives. I might give it a try and see how it goes.

Re: What are properties of SSD drive used in Tecra R10

Hello,
Does anyone know what are the characteristics of the ssd drive ?
128GB but from which contructor? I need all characteristics of the SSD drive for the Tecra R10.
Thanks for your help ;)

Hi
I have only found these details:
The SSD drive which was installed in Tecra R10-10J is an
- 128GB SSD
- Buffer Size 10MB
- Interface SATA
- Height(mm) 9.5mm
- Weight 66g(Max)
Thats everything what I can say about this SSD drive

External USB 2.0 hard drive reconnects on its own after power-down

I have an external USB 2.0 hard drive which I'm trying to power off (after unmounting all partitions, of course) using:
$ udisksctl power-off --block-device /dev/sdb
When I do this, the drive spins back up after a few seconds. Only when I issue the same command again does the drive stay powered off.
I'm running:
linux 3.13.7-1
udisks2 2.1.3-1
This is what I see in the journal log when I:
- Plug in the drive's USB cable
- Issue the power-off command
- After the drive spins up again, issue the command again
Mar 29 19:51:01 miki-desktop kernel: usb 1-5: new high-speed USB device number 10 using ehci-pci
Mar 29 19:51:01 miki-desktop kernel: usb-storage 1-5:1.0: USB Mass Storage device detected
Mar 29 19:51:01 miki-desktop kernel: usb-storage 1-5:1.0: Quirks match for vid 1058 pid 0704: 8000
Mar 29 19:51:01 miki-desktop kernel: scsi12 : usb-storage 1-5:1.0
Mar 29 19:51:01 miki-desktop mtp-probe[21301]: checking bus 1, device 10: "/sys/devices/pci0000:00/0000:00:04.1/usb1/1-5"
Mar 29 19:51:01 miki-desktop mtp-probe[21301]: bus: 1, device: 10 was not an MTP device
Mar 29 19:51:02 miki-desktop kernel: scsi 12:0:0:0: Direct-Access WD 5000BMV External 1.75 PQ: 0 ANSI: 4
Mar 29 19:51:02 miki-desktop kernel: sd 12:0:0:0: [sdb] 976773168 512-byte logical blocks: (500 GB/465 GiB)
Mar 29 19:51:02 miki-desktop kernel: sd 12:0:0:0: [sdb] Write Protect is off
Mar 29 19:51:02 miki-desktop kernel: sd 12:0:0:0: [sdb] Mode Sense: 23 00 00 00
Mar 29 19:51:02 miki-desktop kernel: sd 12:0:0:0: [sdb] No Caching mode page found
Mar 29 19:51:02 miki-desktop kernel: sd 12:0:0:0: [sdb] Assuming drive cache: write through
Mar 29 19:51:02 miki-desktop kernel: sd 12:0:0:0: [sdb] No Caching mode page found
Mar 29 19:51:02 miki-desktop kernel: sd 12:0:0:0: [sdb] Assuming drive cache: write through
Mar 29 19:51:02 miki-desktop kernel: sdb: sdb1 sdb2
Mar 29 19:51:02 miki-desktop kernel: sd 12:0:0:0: [sdb] No Caching mode page found
Mar 29 19:51:02 miki-desktop kernel: sd 12:0:0:0: [sdb] Assuming drive cache: write through
Mar 29 19:51:02 miki-desktop kernel: sd 12:0:0:0: [sdb] Attached SCSI disk
Mar 29 19:51:47 miki-desktop udisksd[21107]: Powering off /dev/sdb - successfully sent SCSI command START STOP UNIT
Mar 29 19:51:47 miki-desktop udisksd[21107]: Powered off /dev/sdb - successfully wrote to sysfs path /sys/devices/pci0000:00/0000:00:04.1/usb1/1-5/remove
Mar 29 19:51:47 miki-desktop kernel: usb 1-5: USB disconnect, device number 10
Mar 29 19:51:47 miki-desktop kernel: usb 2-5: new full-speed USB device number 9 using ohci-pci
Mar 29 19:51:48 miki-desktop kernel: usb 2-5: not running at top speed; connect to a high speed hub
Mar 29 19:51:48 miki-desktop kernel: usb-storage 2-5:1.0: USB Mass Storage device detected
Mar 29 19:51:48 miki-desktop kernel: usb-storage 2-5:1.0: Quirks match for vid 1058 pid 0704: 8000
Mar 29 19:51:48 miki-desktop kernel: scsi13 : usb-storage 2-5:1.0
Mar 29 19:51:48 miki-desktop mtp-probe[21555]: checking bus 2, device 9: "/sys/devices/pci0000:00/0000:00:04.0/usb2/2-5"
Mar 29 19:51:48 miki-desktop mtp-probe[21555]: bus: 2, device: 9 was not an MTP device
Mar 29 19:51:49 miki-desktop kernel: scsi 13:0:0:0: Direct-Access WD 5000BMV External 1.75 PQ: 0 ANSI: 4
Mar 29 19:51:49 miki-desktop kernel: sd 13:0:0:0: [sdb] 976773168 512-byte logical blocks: (500 GB/465 GiB)
Mar 29 19:51:49 miki-desktop kernel: sd 13:0:0:0: [sdb] Write Protect is off
Mar 29 19:51:49 miki-desktop kernel: sd 13:0:0:0: [sdb] Mode Sense: 23 00 00 00
Mar 29 19:51:49 miki-desktop kernel: sd 13:0:0:0: [sdb] No Caching mode page found
Mar 29 19:51:49 miki-desktop kernel: sd 13:0:0:0: [sdb] Assuming drive cache: write through
Mar 29 19:51:49 miki-desktop kernel: sd 13:0:0:0: [sdb] No Caching mode page found
Mar 29 19:51:49 miki-desktop kernel: sd 13:0:0:0: [sdb] Assuming drive cache: write through
Mar 29 19:51:52 miki-desktop kernel: sdb: sdb1 sdb2
Mar 29 19:51:52 miki-desktop kernel: sd 13:0:0:0: [sdb] No Caching mode page found
Mar 29 19:51:52 miki-desktop kernel: sd 13:0:0:0: [sdb] Assuming drive cache: write through
Mar 29 19:51:52 miki-desktop kernel: sd 13:0:0:0: [sdb] Attached SCSI disk
Mar 29 19:52:20 miki-desktop udisksd[21107]: Powering off /dev/sdb - successfully sent SCSI command START STOP UNIT
Mar 29 19:52:20 miki-desktop udisksd[21107]: Powered off /dev/sdb - successfully wrote to sysfs path /sys/devices/pci0000:00/0000:00:04.0/usb2/2-5/remove
Mar 29 19:52:20 miki-desktop kernel: usb 2-5: USB disconnect, device number 9
What is interesting is that on first connect, the drive is using ehci-pci driver, then after the first try powering it off, the drive appears to reconnect using the ohci-pci driver. Not just that, it appears to 'jump' from one USB bus to another. How is this even possible?
$ lspci
00:00.0 Host bridge: NVIDIA Corporation MCP73 Host Bridge (rev a2)
00:00.1 RAM memory: NVIDIA Corporation nForce 630i memory controller (rev a2)
00:01.0 RAM memory: NVIDIA Corporation nForce 630i memory controller (rev a1)
00:01.1 RAM memory: NVIDIA Corporation nForce 630i memory controller (rev a1)
00:01.2 RAM memory: NVIDIA Corporation nForce 630i memory controller (rev a1)
00:01.3 RAM memory: NVIDIA Corporation nForce 630i memory controller (rev a1)
00:01.4 RAM memory: NVIDIA Corporation nForce 630i memory controller (rev a1)
00:01.5 RAM memory: NVIDIA Corporation nForce 630i memory controller (rev a1)
00:01.6 RAM memory: NVIDIA Corporation nForce 630i memory controller (rev a1)
00:02.0 RAM memory: NVIDIA Corporation nForce 630i memory controller (rev a1)
00:03.0 ISA bridge: NVIDIA Corporation MCP73 LPC Bridge (rev a2)
00:03.1 SMBus: NVIDIA Corporation MCP73 SMBus (rev a1)
00:03.2 RAM memory: NVIDIA Corporation MCP73 Memory Controller (rev a1)
00:03.3 Co-processor: NVIDIA Corporation MCP73 Co-processor (rev a2)
00:03.4 RAM memory: NVIDIA Corporation MCP73 Memory Controller (rev a1)
00:04.0 USB controller: NVIDIA Corporation GeForce 7100/nForce 630i USB (rev a1)
00:04.1 USB controller: NVIDIA Corporation MCP73 [nForce 630i] USB 2.0 Controller (EHCI) (rev a1)
00:0a.0 PCI bridge: NVIDIA Corporation MCP73 PCI Express bridge (rev a1)
00:0b.0 PCI bridge: NVIDIA Corporation MCP73 PCI Express bridge (rev a1)
00:0c.0 PCI bridge: NVIDIA Corporation MCP73 PCI Express bridge (rev a1)
00:0d.0 PCI bridge: NVIDIA Corporation MCP73 PCI Express bridge (rev a1)
00:0e.0 IDE interface: NVIDIA Corporation MCP73 IDE (rev a2)
00:0f.0 Ethernet controller: NVIDIA Corporation MCP73 Ethernet (rev a2)
01:06.0 Multimedia audio controller: C-Media Electronics Inc CMI8738/CMI8768 PCI Audio (rev 10)
02:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] RV710 [Radeon HD 4550]
02:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] RV710/730 HDMI Audio [Radeon HD 4000 series]
$ lsusb
Bus 001 Device 009: ID 1058:0704 Western Digital Technologies, Inc. Passport External HDD
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 007: ID 15ca:0101 Textech International Ltd. MIDI Interface cable
Bus 002 Device 003: ID 04d9:1603 Holtek Semiconductor, Inc. Keyboard
Bus 002 Device 002: ID 046d:c001 Logitech, Inc. N48/M-BB48 [FirstMouse Plus]
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Before the first power-off attempt:
$ lsusb -t
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ohci-pci/10p, 12M
|__ Port 1: Dev 2, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M
|__ Port 2: Dev 3, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M
|__ Port 2: Dev 3, If 1, Class=Human Interface Device, Driver=usbhid, 1.5M
|__ Port 4: Dev 7, If 0, Class=Audio, Driver=snd-usb-audio, 12M
|__ Port 4: Dev 7, If 1, Class=Audio, Driver=snd-usb-audio, 12M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/10p, 480M
|__ Port 5: Dev 9, If 0, Class=Mass Storage, Driver=usb-storage, 480M
After the first power-off attempt:
$ lsusb -t
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ohci-pci/10p, 12M
|__ Port 1: Dev 2, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M
|__ Port 2: Dev 3, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M
|__ Port 2: Dev 3, If 1, Class=Human Interface Device, Driver=usbhid, 1.5M
|__ Port 4: Dev 7, If 0, Class=Audio, Driver=snd-usb-audio, 12M
|__ Port 4: Dev 7, If 1, Class=Audio, Driver=snd-usb-audio, 12M
|__ Port 5: Dev 10, If 0, Class=Mass Storage, Driver=usb-storage, 12M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/10p, 480M
Does anyone know how to fix this problem? Is it a device quirk, a driver bug or something?
Last edited by ackalker (2014-03-29 19:21:04)

Just to be sure, I rebooted my system, shut down lightdm from another VT, made sure that really nothing is using the drive, no partitions are mounted, no services that could try to use the drive (except udisks2.service, could this one be the problem? But how am I supposed to use the udisksctl command when the service isn't running?).
Tried the same command again. same result: I needed to run it twice in a row for it to 'take'.
What I find even more fascinating: how can a USB device jump from one USB bus to another like that? I've honestly never seen anything like this before :-)
Last edited by ackalker (2014-03-29 19:35:29)

MacBook Pro with Retina 13" Late 2013 thunderbolt port broken after 10.9.4 update

One of Thunderbolt Port (near USB port) was broken after 10.9.4 update.
I usually use mini Display Port to Display Port cable to connect my external screen, it works fine before 10.9.4 update. After 10.9.4 update, I tried to connect the external screen with the same cable, and the main screen of my MacBook Pro with Retina Display twinkling once so I'm sure the external screen was identified, but no video signal output.
I went to local Apple Premium Reseller (there is no Apple Store in Taiwan) and the they told me all of Thunderbolt Port was fine, they test with their own 10.9.2 copy and it seems ok. After that, I tried to re-install 10.9.4, downloading directly from Apple, the system re-install progress was complete but the Thunderbolt Port issue still there.
I connect to the broken Thunderbolt Port with Thunderbolt to Ethernet adapter, and it works fine, so I believe the only problem is that there is no video signal output from the Thunderbolt Port (near USB port one).
What should I do now?
Model: MacBook Pro with Retina 13" Late 2013

I can confirm that problem, too: Im' working with a Dell U2713HM display, connected via display port. Since 10.9.4 Update i'm experiencing random black screens and/or display going to energy saving mode. Today i've had this issue twice: Display going black and after disconnecting the macbook von all cables screen of the macbook remaining black. Holding Power Button for about 10 s restarts the macbook. After 5 minutes the same problem appeared again.

I use the latest Firefox 13.0.1. I'm using Windows 7. After a day I updated my Adobe Flash Player, suddenly it crashed and showed a blue screen. Please help me.

My Firefox version is 13.0.1. I'm using Windows 7. Adobe Flash Player version is 11.3.300.265. A few minutes after opened the Firefox, suddenly it crashed and a blue screen showed up, it says there are unexpected error occured and forced my computer to be stopped. I need to restart the computer to see either it still show the blue screen or it just fine. After restarted, I use the Firefox once again, but this time, after about 30 minutes, it crashed again. The same blue screen showed up. As I expected, the new Adobe Flash Update crashes with the Firefox 13.0.1. Really need a solution here. Thank you.

Hi,
Blue screens usually indicate Windows system level problems involving device drivers like graphics card drivers, hardware errors (RAM, hard drive) etc. Malware may also cause this. Searching for the displayed error code would usually provide helpful pointers. The [http://answers.microsoft.com/en-us Windows forum] would also be helpful.

CD/DVD (disk)drive on computer not working after 10.8.5 update

I have been having problems with this resently. Every time I try to load a CD or DVD into my computer, it doesn't recogenize it. It makes sounds like it's thinking and stuck and then after a lengthy period of time, spits out the disk and says that I had inserted a blank disk. Obviously it wasn't blank or I wouldn'd be trying to figure out what the hck is wrong with it here. I am so beyond frusterated because this all started happening right after the last update for the Os X operating system. can someone please help me here. I don't know what to do. My computer has NEVER done this before and I NEED it to start working again. And before anyone suggests it, yes I have restarted it... SEVERAL times.

Hello DaniHime86,
We've an article that provides a few additional tips that can help get your Mac's SuperDrive working correctly again.
The drive accepts discs but they do not mount or are automatically ejected
Make sure the drive is not upside down. The aluminum enclosure should be facing up.
Check the disc's surface for scratches and dirt, since these things can prevent the disc from appearing on the desktop.
The MacBook Air SuperDrive is designed to be used with MacBook Air and Mac mini computers that do not have a built-in optical drive. For best results, connect the MacBook Air SuperDrive directly to the computer's USB port instead a USB hub.
Reset the System Management Controller (SMC).
Ensure your drive can read the specific type of disc being used. The System Profiler or System Information may provide additional information regarding what media your computer supports.
Mac OS X 10.6 Snow Leopard or earlier: Open Apple System Profiler by choosing "About this Mac" from the Apple () menu. Then, click More Info.
OS X 10.7 Lion or later: Open System Information by choosing "About this Mac" from the Apple () menu. Then, click System Report.
If the disc continues to not be recognized, contact Apple, an Apple Authorized Service Provider, or make an appointment with an Apple Retail Store for additional troubleshooting, evaluation, or service.
Apple Computers: Troubleshooting the slot-loading SuperDrive
http://support.apple.com/kb/HT2801
Cheers,
Allen

Hard drive not recognized on startup after 10.4.6 update

This is hurting my brain.
I updated to 10.4.6 from the Software Update that popped up today. Upon restart it "froze" on the greyscreen with the Apple logo. (didn't make it to the spinning wheel). I even let it sit for a good 10 minutes, hoping it would snap out of it
Booted with install DVD (10.4.3) and ran First Aid. Here it see's the drive and found no problems, also ran repair permissions, which found a few on a HP printer driver installed ages ago. Now when I restart it just gives me the friggin flashing folder with a questions mark/finder icon.
Running disk warrior found a few things to repair, but still the same flashing folder with question mark
Next I popped in a backup hd with 10.4.5 on it, it loads up and sees the main hd. Huh?
So i backed up the important stuff and did an archive and install on the main hd. But still get the flashing folder w/question mark. GAH.
I rather not reformat as my backup hd is only 30 GB free and I have 80GB of data i need on the main hd!
Help?!

Oh yeah, forgot to mention that I tried that too when I was able to boot up with my backup HD. Actually I tried it again just for kicks. And now I get the the spinning wheel with the apple logo and does that for a good 5 minutes, then the apple logo changes to the circle with a slash.
At least I can stil see the drive when I boot up the backup hd. I suppose I'll just backup the files to dvd hmm 50gb divided by 4.7... 11 discs...

[SOLVED] New install does not see SSD drive

Ok, I have a DFI motherboard which at first did not recognize my new Intel SSD drive I have installed. After updating the BIOS, it now correctly recognizes it. However when I run the 2009.2 cd and try to prepare the drives, it does not show any drives listed?
/sbin/fdisk -l
does not show any drives either so it looks like arch cant see any installed HD's which makes since, but the motherboard does show the new Intel SSD as a Sata drive right under my DVD player?
Any help?
Edit: I hooked up my old Seagate drive and it shows up fine. Any idea on why this SSD is not playing nice?
Solved: I have come to the conclusion this has nothing to do with the Arch install, but is simply a hardware issue with my motherboard. I installed the SSD drive in my wifes pc, it seen the ssd as a sata drive while booting, it seen it when arch was initializing, it seen it when I did a fdisk, and when i finally tried to install, it was there too!!
So there must be some issue with my old DFI MB. I will work on that or upgrade..Thanks to everyone who helped out...
Last edited by banshee28 (2009-02-28 16:48:07)

lilsirecho wrote:
I had trouble with my throttle device not making contact with the data lines when connected to USB.
I assume the SSD has the same connector as the motherboard and the cable can be reversed end to end to test for performance.
I use a multimeter to verify the presence of power to the device.
Sata cables are known to be flaky.
Throttle devices use 5vdc power from USB connector and are connected to esata cables at the same time since sata ports do not supply power. The connections for throttle are on opposite ends of the device.
I am not familiar with the SSD power setup but assume it is 5vdc as well.
No other suggestions here..................
Yes, the cable should be able to be reversed as the ssd drives are identical compared to normal sata drives in respect to the cable connections: one sata data connection and one power. I will try some different cables and see if that helps. I did try a new port on the mb which did not work, and when i used the current cables on my older seagate drive it worked fine
Last edited by banshee28 (2009-02-26 13:15:52)

Zero Out Data on a SSD drive: Are my findings correct?

"Note: With OS X Lion and an SSD drive, Secure Erase and Erasing Free Space are not available in Disk Utility. These options are not needed for an SSD drive because a standard erase makes it difficult to recover data from an SSD. For more security, consider turning on FileVault 2 encryption when you start using the SSD drive."
http://support.apple.com/kb/HT3680
Seems to hard to believe, as I've seen some of the top participants here clearly say that first your set a new partition, then erase Macintosh HD, then zero out data?

Retired Engineer, do you have any references? What I have read says otherwise.
Drive Wear & Tear
What is your estimation of wear and tear on the flash by writing to 0's. What percentage of the drives total usage has been "wasted"? I thought even consumer drives where capable of 1000 - 10000 rewrites per cell, whereas enterprise SSDs are capable of over 100,000: http://www.computerworld.com/s/article/9112065/Solid_state_disk_lackluster_for_l aptops_PCs?taxonomyId=19&pageNumber=1&taxonomyName=Storage.
"For one thing, it matters whether the SSD drive uses SLC or MLC memory. SLC generally endures up to 100,000 write cycles or writes per cell, while MLC can endure anywhere from 1,000 to 10,000 writes before it begins to fail, according to Fujitsu's Hagberg. For its part, Western Digital's laptop hard-disk drive boasts up to 600,000 write cycles."
That's an old artcile too. Slightly newer, in late 2008 Micron/Sun achieved SLC NAND chips capable of over 1,000,000 write cycles: http://investors.micron.com/releasedetail.cfm?ReleaseID=440650 . I imagine things have gotten slightly better in the last 4 years.
Data Wiping
This paper (http://static.usenix.org/events/fast11/tech/full_papers/Wei.pdf) states, "In most cases, overwriting the entire disk twice was sufﬁcient to sanitize the disk, regardless of the previous state of the drive."
Going on however, "Overall, the results for overwriting are poor: while overwriting appears to be effective in some cases across a wide range of drives, it is clearly not universally reliable. It seems unlikely that an individual or organization expending the effort to sanitize a device would be satisﬁed with this level of performance."
The best method I have found for wiping an SSD on a Mac is the (SAFE) Scramble and Finally Erase process as described in this UC San Diego research paper: http://cseweb.ucsd.edu/users/swanson/papers/TR-cs2011-0963-Safe.pdf.
According to their paper, the effectiveness of the procedure is equiavlent to degaussing a magentic drive. Another tidbit, the SAFE technique is replicated by Sandforce controller when someone reformats the drive (as mentioned by Linc Davis above, however, I believe this is specific only to Sandforce controllers).
References:
http://www.schneier.com/blog/archives/2011/03/erasing_data_fr.html
http://www.computerworld.com/s/article/9211519/Can_data_stored_on_an_SSD_be_secu red_
http://arstechnica.com/security/2011/03/ask-ars-how-can-i-safely-erase-the-data- from-my-ssd-drive/
http://static.usenix.org/events/fast11/tech/full_papers/Wei.pdf
http://cseweb.ucsd.edu/users/swanson/papers/TR-cs2011-0963-Safe.pdf

W500 Seagate Hybrid 1TB SSHD Drive

Having just upgraded my ThinkPad W500's 320GB Seagate hard drive to a 1TB Seagate SSHD (hybrid) hard drive, using Drive Ware to clone the old drive to the new, everything seems to be O.K., EXCEPT Windows is behaving odd: the Start menu search function will not work, and neither will Windows Update and several other features.
Anyone face this problem? Some Internet searches have led me to believe the issue might be due to 4K Advanced Storage (found on the new drive) being incompatible with the computer, but I am lost to what, if anything, I should do. I'm running Windows 7 Professional, 64-bit.
Any advice, if this won't work, to an internal 1TB hard drive for the W500?
Thanks very much.
Solved!
Go to Solution.

Hi Commando303,
It does sound like it might be an Advanced Format issue. What operating system are you running?
There's a MS update that might help. Installing the latest Intel storage driver might also do the trick.
[edit] Found the KB article: http://forums.lenovo.com/t5/Windows-7-Knowledge-Base/Windows-Update-Fails-After-Installing-New-Hard-...
Z.
The large print: please read the Community Participation Rules before posting. Include as much information as possible: model, machine type, operating system, and a descriptive subject line. Do not include personal information: serial number, telephone number, email address, etc. The fine print: I do not work for, nor do I speak for Lenovo. Unsolicited private messages will be ignored. ... GeezBlog
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SSD drive in a DV6205us

Has anyone dropped a Solid State Drive into a dv6000 series yet? If so, Is it stable and fast?

In my opinion, SSD drives have a problem because of an assumption in File Systems.
When a file is deleted with traditional rotating drives, only the directory entry is cleared, and the actual data blocks are simply added to the free pool to be re-used later. Re-use merely overwrites entire blocks (no read-modify-write involved). Simple, effective, and FAST.
An SSD cannot write anything but a completely empty block, and its internal blocks are HUGE. To re-write a (partial) superblock, it must read-erase-modify-write, a very slow procedure.
But no general-purpose notification is sent to the drive that the "un-needed" data blocks should be considered "deleted". This works fine for a rotating drive that will later simply overwrite deleted blocks. But lacking a notification of what blocks are "deleted", the SSD continues to carry ALL those "deleted" blocks as if they were good data. This clogs it up, and performance on many SSD drives goes way down.
Apple-certified SSD drives use TRIM to notify the SSD which blocks have been deleted. But Apple routines do not send these commands to non-Apple-tested drives, as Apple has not tested these.
TRIM Enabler from groths makes a patch to enable TRIM for any SSD that claims to support it. This may cause unintended consequences on certain drives. No one knows for sure. I use it and have had no issues with it. Use it at your own risk.
If you choose to use it:
Install the Utility.
Run the Utility and enable TRIM for each drive you want.
Restart.
Run Disk Utility ( Repair Disk ). If all is well, you will get an additional message: "TRIM-ing unused blocks"

Hard drive disconnects itself improperly-Hard disk sleep?

Hello,
I have recently bought a 2011 Macbook Pro and I am facing a problem with an external Verbatim LCD hard drive.
It seems like when the drive is inactive for 10 minutes or so, it gets disconnected improperly, I get an error message and the drive disappears from the system until I unplug it and plug it back in.
Also I have noticed that when the disk is in use , it does not disconnect. I tried leaving playing a movie to see what will happen and everything was ok. When I stopped the movie and left the Macbook Pro it disconnected itself after a while.
I know this may be bacause of the option in the Power Saver "Put hard disks to sleep if possible".
So, I have decided to untick this option and up to now everything seems fine again.
I just wonder, should I leave this option on or off? And if this option is there, why does it cause such a serious problem like disconnecting a hard drive?
This certainly should not be happening!
I would appreciate any information on that.
Thank you in advance!

Anyone?

My G5's hard drive died after doing a software update while iPhone was connected.

My G5's hard drive was corrupted and unbootable after doing a software update while my iPhone 4 was connected. Coincidence or related?
Attempts at rebooting produced the file folder icon with flashing question mark. It's been a LONG time since I last saw that.
Disk Utility/First Aid reported that drive had "invalid node structure." The disk could not be repaired because it "could not be unmounted."
Is the failure possibly related to the iPhone being connected at the time of the software update and restart?

Possible the iPhone had something to do with it, but I like to make sure the Disk Directory & Permissions are good before any update.
Was that Repair/Verify done when booted from the Install Disc?
You must repair the HD, if Disk Utility or fsck should fail to repair it then...
Your best bet is DiskWarrior, you need the CD/DVD though.
http://www.alsoft.com/DiskWarrior/
But others that may work…
Drive Genius…
http://www.prosofteng.com/products/drive_genius.php
TechTool Pro…
http://www.micromat.com/index.php?option=com_content&task=view&id=31&Itemid=83

My external seagate thunderbolt adapter SSD drive using thunderbolt disconnects itself after 10.8.1 update

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