Update ignore the post time on above post. I typed it on my pc while I was djing and forgot to click post.

So for the past two hours I have been using vsl with everything running off a cloned firewire western digital 1tb my book external with not a single freeze or audio drop out......

So there is definitely something wrong with my internal 750gb western digital scorpio data connection. What do you guys think, brand new drive is trash already? Everything other then prolonged vsl runs absolutely perfect. Anyone else installed this drive into a unibody with no problems?

I'm going to try and clone to my old 500gb install and see what happens. What a pain

Turn off the sms (sudden motion sensor) It will cause panics with the new macs.

So I watched your video, and what you have happening (the whole screen freezing) is completely different than what I was seeing on my friend's MBP (the one that was fixed by downgrading firmware).

Does the internal drive pass the tests in SMARTUtility?

If so, the first and easiest thing I'd try is setting up a new user in Mac OS, and see if running from that account gives any different results.

I've never had to turn off the SMS in my MBP's, and as mentioned before I've been using that same model of 750gb WD drive with no problems at all (assuming yours is the standard-height version, not the earlier 12.5mm-height version).

I actually think this might be the fix. I just did a hour session with not one problem or freeze. I'm beyond excited right now!!!!

Yes djmark my drive is the 9.5mm one and passed smart utility no problem. I'm going do do another hour set trying to stress my comp out again and see if this fix holds.

Love these forums lol, crossing my fingers and will report back.

Check this post. It's mainly about adding a 2nd hard drive in your macbook pro, but it talks about sms and checking if your new drive has it and how to turn it off.

forgot the link
forums.macrumors.com

Thanks Puma, I just messed around for another hour with no problems. Im thinking turning off sms has solved my problem. I havent been able to dj a full hour or two without it freezing on me since i upgraded to the 750gb. The true test will be this sat at my gig.

This is extremely interesting. I'm wondering if some difference between our drive's firmware, or between our computer's internal hardware/firmware, or some odd interaction between different versions, might be accounting for this. (Also could you *maybe* be vibrating/shocking your computer dramatically more than I do? :-).

Under System Profiler/Hardware/Serial-ATA, you should find your drive's information over to the right. In my main DJ-ing computer, the information for my 750gb drive is:

WDC WD7500BPVT-00HXZT0:

Capacity: 750.16 GB (750,156,374,016 bytes)
Model: WDC WD7500BPVT-00HXZT0
Revision: 01.01A01

And that computer's Hardware Overview is:

Model Name: MacBook Pro
Model Identifier: MacBookPro6,1
Processor Name: Intel Core i7
Processor Speed: 2.66 GHz
Number Of Processors: 1
Total Number Of Cores: 2
L2 Cache (per core): 256 KB
L3 Cache: 4 MB
Memory: 8 GB
Processor Interconnect Speed: 4.8 GT/s
Boot ROM Version: MBP61.0057.B05
SMC Version (system): 1.57f16
Serial Number (system): (irrelevant)
Hardware UUID: (irrelevant)
Sudden Motion Sensor:
State: Enabled

At any rate, hope you're on your way to having this issue sorted out.

This is why I'm skeptical on upgrading my macs hard drive. don't want to get the wrong one and be screwed.

+1

DJMark here is my comparison:

WDC WD7500BPVT-22HXZT1:

Capacity: 750.16 GB (750,156,374,016 bytes)
Model: WDC WD7500BPVT-22HXZT1
Revision: 01.01A01

Model Name: MacBook Pro
Model Identifier: MacBookPro5,1
Processor Name: Intel Core 2 Duo
Processor Speed: 2.53 GHz
Number Of Processors: 1
Total Number Of Cores: 2
L2 Cache: 6 MB
Memory: 4 GB
Bus Speed: 1.07 GHz
Boot ROM Version: MBP51.007E.B05
SMC Version (system): 1.33f8
Serial Number (system):
Hardware UUID:
Sudden Motion Sensor:
State: Disabled

I dont know what im looking at here, but it looks like i have a different drive?? I ordered the only one that was in your link from another thread to newegg. Interesting, at any rate im going to do more testing. If i have more problems which i hope i wont, then im going back to my oem 320gb and using firewire externals even if it means i have to bring two to each gig.......

Not sure about the slight discrepancy between our drive model numbers. Might be just a difference in manufacturing date? I got my 750-gig drive back in mid-April, think it has a March manufactured date on the drive itself.

Anyway, keep us posted on how things work out for you...if turning off the SMS actually fixes things for you, that's obviously very useful to know.

Bad news :(. Did my gig tonight, Played 3 hours straight and then i got the waveform disappear audio and video cut out on a packed dance floor....... Everyone booed but i got on the mic and made it all better.

Im kindof stuck. I want to try different things like doing a clean install using a time machine backup or installing my original hd and running off an external but i rarely have the time to practice for 5 straight hours just to test...

Just let it run on auto play over night as soon as you can. Anytime I change a piece of hardware or upgrade SSL I let that sucker run through the library on its own alll night long and check to see if it's still alive when I get up.

With the particular problem im having, it will only freeze for a few seconds and then come back on. It doesnt crash ssl so all though a good idea i would never know if it happened or not without watching it :(.

Is there a program out there that an stress test a hd?

I had a similar issue when I bought a did a DIY external drive thing. I bought the 1TB Western Digital 2.5" notebook drive and put in and external enclosure. I played that weekend and Friday night it crashed 3 times... (unheard of...) .. and yeah... boos came right when it happened... luckily I play with other DJ's (tag team thing) and they just took over right away...

Come to find out I did a surface scan using TechTools and found over 500 bad sectors on the drive. I got it replaced and before I added my library to it I did a surface scan with NO errors... so... no problems since.

I just wiped my hd and I'm reinstalling my osx and info via time machine right now. But full reinstall doesn't fix bad sectors does it? Going to check out techtools software as soon as my install is done.

bad sectors is a hardware issue... meaning a bad drive. you have to replace it if it has bad sectors... there is no fixing that.

Oh ok, google said bad sectors could be ignored via disk utility and zero data security option. Well its almost done so ill see if it worked.

Update: I did a full erase using Zero data security option. Full clean install of osx, then restore via time machine. Ran techtools which is an awesome program, everything passed including surface scan of hd. So no bad hd sectors at all.

So tomorrow i will be testing it again for a few hours. Since disabling sms didnt help i just enabled it again. Hopefully the clean install fixes this.

Any chance that your previous OS installation (before the clean install you're now doing) was one that you had migrated (or cloned) from a different computer?

Just wondering since I've seen both result in an OS install that was botched in some very strange/non-obvious/difficult-to-troubleshoot ways.

Yea mark I had all the issues on a cloned osx from the previous 500gb internal that was in my mbp. I used carbon copy cleaner. Maybe this clean install is the ticket since others have had problems with clones.

Well after hour and half of mixing on the fresh install it froze again...... Im out of ideas. Think it could a be a 57 issue? But when my comp freezes the music still plays for a few seconds before completely cutting out and then restoring itself.

Maybe, except that in your second post you wrote: "So for the past two hours I have been using vsl with everything running off a cloned firewire western digital 1tb my book external with not a single freeze or audio drop out", so unless something's changed it seems like the internal drive (or perhaps the internal SATA bus) is suspect.

I think my next troubleshooting step would be trying a different internal drive, and see if the behavior changes.

Yes im swapping back in the 320 oem drive for testing but i have to transfer all my music to an external first and reroute my itunes since it wont fit, then fresh install on the 320gb. Blah more hours of waiting. This is such a pain lol, especially since all test i have run have said the drive is good. Oh well, I will post back with results.

After lots of issues trying to copy my all my music to an external and get itunes to recognize it i finally figured it out. Zeroed out and fresh install on the oem 320gb with a time machine backup. I got everything running with no problems for the past couple days mixing for a few hours at a time.

The one thing i didnt try was running the music off the firewire external but still using the 750gb internal. I might try that later since it would only take swapping out the internal hd. But for now it looks as though it was my 750gb that was the problem.

One minor issue is about half of all my video files had to be reanalyzed and i lost all my cues and loops for some reason.

Now i just have to figure out how im going to back up all my music onto a seperate hd, Firewire 800 expresscard maybe? Also have to figure out how im going to transport this giant external lol, doesnt fit in my gig bag....... Do you guys bring a backup in case your main fails? Only place i can put it while gigging is right under my laptop on the uber stand so im hoping heat wont be a problem. Im also out of power plugin on my 6 port surge protector so need to figure that out too, unless i get a usb expresscard but then that still needs a power plug too.

Such a pain in the a**, if anyone with the same laptop figures out how to get their 750gb running perfect PLEASE let me know, its so much easier.

DJMark you think maybe i just got a dud 750gb? Even though all the tests show its a good drive, maybe i should pick up another and see if i get better results.

I'm thinking you either have a drive with some odd defect, or there's an equally-odd defect in your computer. Doing a clean Mac OS install and still seeing issues would tend to point to a hardware problem. If it's the drive, even if you do buy another to test, you should be able to get the original exchanged under warranty.

(Stabbing in the dark: have you ever run the "Apple Hardware Test" on that computer with the 750gb drive installed?).

If you do decide to go with an external drive for whatever reason, bus-powered Firewire 800 is your best option. No need for a separate power connection, power carries over the Firewire cable. (Only works for 2.5-inch "laptop-size" drives).

Yes i ran the techtools deluxe hardware full test after booting from the dvd. Everything passed perfect. Not sure if that is the same as the apple hardware test, i did get it from the apple site at least.

I was looking into the buspowered 2.5 drives but a lot of reviews suggested failure because of heat. The club i dj at is ridiculously hot in my corner so im still researching for a good external to replace my book studio 1tb (Which actually runs great, I just need one for back up and replacement if it fails).

Well im going to run this setup for awhile, im just passed 30 day warranty on this thing so im going to contact wd and see if i can get a replacement.

run the activity monitor next time during your video set on the 750gb drive and see if you have a sudden spike in usage. i was having the same problem and i have this weird issue where when i play a video in itunes it stutters. try reinstalling quicktime as well. does videos freeze anyother time. ex. finder window, youtube, vimeo, itunes?

Ahh I should have done that. Regarding itunes my videos have always stuttered when playing them in itunes even on my oem drive. When playing them just in quicktime they dont stutter though.

Never noticed any other videos freezing but i also wasnt really looking for it. I checked the vsl help section and it looks like a few people have the same exact problem as i do but some on PC's and others on Imac's. Their problems still havent been resolved.

I have a MacBook Pro model 2,2 it is from early 2007
and I replaced the 200gb stock drive with WDC WD7500BPVT-22HXZT1
same drive some of you are using and i haven't had any panics yet but in the kenrel log in the application Console i have disk0s2 I/O error
my SMS sensor in the mac in on but i don't know if the drive has a SMS sensor in it too
i will check that

Well there was nothing wrong with the drive itself because I'm running it in my new i7 mbp with no problems.

Interesting...so it sounds like you may have been dealing with some oddball hardware problem on your old computer. I know a couple other people who've put the WD 750-gig drives into pre-unibody MacBook Pros and they apparently are working fine.

have any of you checked the kernel log in console?
console is in /applications/utilities
"1/18/11 10:02:47 PM kernel disk0s2: I/O error."
Mine is also pre-unibody and since i started this post tonight i have had about 6 I/O errors and i also turned off SMS
the model # on the bottom of my mac is a1211

that is the serial # of your drive i might be able to compare it to the one on mine to see DOM (date of manufacture)

I don't have any such errors.

There could be an issue with the newer drives being SATA-2, and the older MacBook Pros having a SATA-1 internal bus?

In System Profiler, click on "Serial-ATA" on the left pane, and see what shows up on the right pane. In my case:

Intel 5 Series Chipset:

Vendor: Intel
Product: 5 Series Chipset
Link Speed: 3 Gigabit
Negotiated Link Speed: 3 Gigabit
Description: AHCI Version 1.30 Supported

I have definitely seen problems in some of the 2009 Unibody 15-inch MacBook Pros when the internal SATA bus was trying to run at 3 gigabits...which is the issue that was addressed by downgrading firmware in those computers to force it down to 1.5 gigabits. I've heard about other people fixing these issues by shielding the internal SATA ribbon cable with foil, or replacing it entirely.

My personal experiences with the pre-Unibody MacBook Pros is more limited, but it seems logical enough that there could be similar issue with them...

this is what i get in system profiler
i have a degree in computer networking
did any of you try and run WD's test software it is on their website
note you will need a Real windows computer to try it (you have to take the HD out of the mac and put it in a windows computer)
when i ran it on my drive it did come up with errors but it also said it fixed them
i'm thinking i got a bad drive but i could be worng
Intel ICH7-M AHCI:

Vendor: Intel
Product: ICH7-M AHCI
Link Speed: 1.5 Gigabit
Negotiated Link Speed: 1.5 Gigabit
Description: AHCI Version 1.10 Supported

WDC WD7500BPVT-22HXZT1:

Capacity: 750.16 GB (750,156,374,016 bytes)
Model: WDC WD7500BPVT-22HXZT1
Revision: 01.01A01
Serial Number: WD-WXD1A50A0234
Native Command Queuing: Yes
Queue Depth: 32
Removable Media: No
Detachable Drive: No
BSD Name: disk0
Rotational Rate: 5400
Medium Type: Rotational
Partition Map Type: GPT (GUID Partition Table)
S.M.A.R.T. status: Verified
Volumes:
Capacity: 209.7 MB (209,715,200 bytes)
Writable: Yes
BSD Name: disk0s1
KB3NZQ Macintosh HD:
Capacity: 749.81 GB (749,812,400,128 bytes)
Available: 344.13 GB (344,127,021,056 bytes)
Writable: Yes
File System: HFS+
BSD Name: disk0s2
Mount Point: /

If I ever saw that in System Profiler I'd be a bit worried.

Well just got off the phone with Western Digital i'm getting a new drive
and now i'm going to order a new hard drive cable to rule that out as well