Emac Hard Drive and Cleaning Question

Hello to all,
Sorry for all the crazy questions about this emac. I have never owned a mac before so this is a learning experience as I go and I hope no one minds the questions.
Here is my latest question. I needed a new hard drive and it came out really easy. Within in about 20 minutes I had the hard drive out and in my hands. Wasn't as tough as I read. Anyway, my quesition is, I don't have the original software that came with the mac but I can get that from apple.
If I would put a new hard drive in would I still need the original software for the mac or would I get a new disc with the hard drive that would now be the software for this mac?
Also, I noticed on the green pc board that there is some slight corrosion around some of the solder points and things. Could I use a electronic contact cleaner on this to clean it up? Or is there anyway to clean it up safely without messing up the board. The mac runs but wanted to clean it up.
Thanks for any help and sorry for the loooooooooong question.
Xray

Apple does not bundle Mac OS X with any replacement hard drives; you must purchase OS X (or contact Apple for a replacement set of the eMac's original discs) separately. You can then boot from the OS X Install disc, launch Disk Utility from the Installer/Utilities menu, and use Disk Utility to format (and if desired, partition) the hard drive as Mac OS X Extended.
I've not heard of corrosion internal to the eMac. Do you know if the Mac was kept in an unusually humid or wet environment, such as a beach house? While contact cleaner itself should be harmless if it's dried thoroughly before re-powering the computer, I'd be reluctant to do any sorrt of scrubbing, even light pressure with a cotten swab, on the wires on the logic board.

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I got lots of short questions and a semi bigger one.
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J D McIninch wrote:
\- The bitrate for HDV high-definition video is *25 Mbps* -- 1/16th the bandwidth of FW400.
\- Max bitrate for AVCHD is *24 Mbps*.
\- DVCPRO100 has the highest bitrate of all the HD video formats at a whopping *100 Mbps*.
The maximum burst speed of FW400 is about 393 MBps \[typo: 393 Mbps\] and sustained
transfer rate it near that.
You shouldn't worry about the transfer rates on FireWire as much as the drives.
Most hard drives are not going to be able to sustain transfer rates of 100 Mbps --
you probably need an array for that. It's moot, however, if you are using consumer-grade
HD (with rates around 25 Mbps).
Very useful info on the video data rates on various formats, JDM -- thanks.
However, I'm a little confused by the disk drive data rates you quoted. It appears that
the numbers you mentioned are actually MBytes/s (MBps) rather than Mbits/s (Mbps).
The OP's current internal HD (ST3160812AS) is a 160GB Seagate 7200.9 family drive
spec'd at 83MBytes/s max sustained throughput. (That applies only to the outermost
tracks, when the drive is nearly empty. It'll be about 40MBytes/s on the inner tracks.
So, when nearly full, the internal drive is about the same speed as a FW400 external.
The 750GB Hitachi Deskstar 7K1000 is slightly faster (ca. 85-90MBytes/s maximum,
when empty, and half of that when nearly full). That's fairly fast as today's large HDs
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or WesternDigital's WD7500AAKS (98MBytes/s, max) -- but they're all more than fast
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It is nice to see that today's fastest 750GB drives consume no more power than the
best-performing 160GB drives of a few years ago.
vtwiz wrote:
Don't attempt to replace the drive in your iMac. Keept it for the OS and software
and use an external drive for all your video.
Good advice! Regardless of the size of your internal drive, save the data-flogging
for the easily-replaceable external drive.
Looby

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First Off:
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halp.
halp me plase.

So funny story...
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Ghosts? Magic? Full Moon?
we may never know...
Thanks anyways guys!

Question about replacement hard drives and clean win7 install fo x61

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http://forum.lenovo.com/t5/Windows-7-Knowledge-Base/Will-the-ThinkPad-X301-run-Win7-x64/ta-p/325173
Regards,
Jin Li
May this year, be the year of 'DO'!
I am a volunteer, and not a paid staff of Lenovo or Microsoft

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Message Edited by Aaron on 02-15-2009 04:54 PM

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1. Yes, it is normal. If there's no OS on the drive, there's nothing to take the computer past that point.
2. No, there's no way on that Mac model. You need to use an existing system(see #4).
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(105476)

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Okay so about a month ago I transferred my itunes library to my external hard drive. I have since purchased and downloaded new music/video to my Ipod. Here are my questions if anyone can help me please.
1) Because I moved the library to the external, does that mean I also moved the Itunes program OR just the place where new music is downloaded/purchased and save to?
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3) Horror story I heard is that when I upgrade, I may have to re-purchase music from Itunes in order for it to play on new Itunes. If that's true then I am paying like $400+.
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Sincerely,
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gusaphit wrote:
so because you have kept your itunes folder and library on an EHD, I take it you have also deleted the actual Itunes program folder from your computer's C drive?
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I'm asking because you responded and you're cute.
Very happy to help but really, I'm not that cute.

How do I find out what's on my hard drive and clean it up

The hard drive is filled with "other", not video or photos. I don't know what's clogging it up or how to get it cleaned up. Please help.

What is "Other" and What Can I Do About It?- Apple Support Communities
Freeing Up Space on The Hard Drive
1. See Lion/Mountain Lion/Mavericks' Storage Display.
2. You can remove data from your Home folder except for the /Home/Library/ folder.
3. Visit The XLab FAQs and read the FAQ on freeing up space on your hard drive.
4. Also see Freeing space on your Mac OS X startup disk.
5. See Where did my Disk Space go?.
6. See The Storage Display.
You must Empty the Trash in order to recover the space they occupied on the hard drive.
You should consider replacing the drive with a larger one. Check out OWC for drives, tutorials, and toolkits.
Try using OmniDiskSweeper 1.8 or GrandPerspective to search your drive for large files and where they are located.

Wipe out hard drive and clean install

I may have a bad sector on hard drive with Mac pro laptop; OS snow leopard would "hang" & apple logo would appear but laptop would not boot to finder. Genius bar technician instructed me to backup files, clean hard drive to zeros, and reinstall OS software. Could not locate the steps to accomplish this in my manual or apple support site. Could someone point me to the guidance for this?

Launch Disk Utility and read its Help files.

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Alright so..
I have a 160GB internal Hard Drive on my MacBook Pro, and it's basically saying that I have like NOTHING left on it. I don't have a huge amount of programs on my computer.. or even files (I have an external HD for most stuff).
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I have a problem with the latest Quicktime 7.2 not deleting temp files after converting some movies, leaving gigabytes of these invisible files on my drive. I've had to search for these files and delete them manually to reclaim drive space. If you've been working with video files this could be one thing to look out for.
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http://www.macupdate.com/search.php?arch=intel&keywords=invisible&os=macosx

I cant erase my hard drive and clean install OS X 10.6

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My T61 notebook came preinstalled with MS Office software. No MS Office media (CDs/DVDs) was shipped with the T61 notebook. I want to upgrade the hard drive and clean reinstall OS and MS Office. I can create the Recovery Media using the ThinkVantage tool but that will not include MS Office.
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Sumit

Hi sumitk, and welcome to the Lenovo User Community!
Try here:
http://www.microsoft.com/office/backup/en-us/default.mspx
I don't work for Lenovo. I'm a crazy volunteer!

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I am currently running OS X 10.10.3 and I want to do a clean install. All my content is backed up with Time Machine via external drive.
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Last, once i finally have a clean installation of OS X 10.10.3, am i able to access my external drive via time machine to bring back some of my old files...i have read that the folder in the external drive is not accessible and not accessible through time machine.
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Hello Jacob,
All of these are good questions to have when erasing and installing OS X Yosemite. To answer your first question you would need to boot to either your Recovery HD or through the Recovery USB and follow the steps in the first article below. Either option will get the task accomplished and will install OS X Yosemite. For your final question about restoring from a Time Machine back up, you will see the option to restore when going through the setup process of your Mac. Let me know if the information below is of help or need further assistance.
OS X Yosemite: Erase and reinstall OS X
https://support.apple.com/kb/PH18869
OS X: About Recovery Disk Assistant
https://support.apple.com/en-us/HT202294
OS X Yosemite: Recover your entire system
https://support.apple.com/kb/PH18848
Take it easy,
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