Windows 7: Large external HDD for backup - Partition? Image and Synctoy?

I have an all-in-one desktop computer with a 1 TB internal HDD. When I first got the computer, I did not understand how helpful it would have been to create a separate partition just for my data. Because of the location of the OEM partition, I would have had to use a third-party program to move it and create the data partition.

I ended up just using the built-in utility to create my system image that included a lot of data. My external HDD was only 1 TB. At the time I didn't understand how useful it would have been to have a larger external so that I could keep more than one image without having to write over the old one while saving a new image.

I have finally purchased a 3 TB external hard drive. I am wondering whether there is any need or advantage to partitioning it before I start using it?



I also have been considering imaging the whole HDD, and then also using SyncToy to back up all my data files. The data file backups will then be redundant, but it seems they might be more reliable and also easier to access. Will they be accessible folders just like I have in my internal HDD - so if I wanted, I could hook up the external HDD and easily navigate to and play a file that was stored with SyncToy? (I wanted to verify that SyncToy doesn't break large files into smaller segments and zip them like I think Windows Backup does.)

If I am planning to use SyncToy or something like that, would it be best for me to Partition off 1 TB just for that, and save the other 2 GB for system images? Any advantage to that?

Sorry if these are stupid questions, but I figured it's better to ask stupid questions first rather than regret something later like I do with not partitioning my computer right from the start.

Blue Skies,
Without knowing what your storage is needed for, it's hard to give you any advice. Backing up your data is a good think but it's hard to say when enough is enough. That 3TB drive is one big puppy and I think if it were me I'd divide it up into 1TB partitions. Why do you need to make a lot of Imaged Backups? I had several at one time myself and I found only the current one is good for anything. That is especially true if you are adding files to your system on a dialy basis.

Why are you worried about compressed files? I don't know anything about the program (SyncToy) but you want to backup only the Files that you make changes to. Having more backups is over kill and will cost you a lot of big bucks.
Good Luck

I was going to buy a 2 TB, but the extra TB was only $20 more... so I thought I might as well get the larger one since HDDs keep getting bigger.

I use my computer as a DVR, and also have a lot of DVD ISOs, video and music files etc.

The last system image I made failed at the end because I got a BSOD just before it finished, so I'm not sure how useful it will be for restoring. I wanted to have enough space to make a new image without writing over the current one.

I started to have a problem the other day with my computer shutting off with no warning and no blue screen. I'm not sure what the cause was - could be a bad power supply - but I moved it to a cooler spot with a different surge protector and it seems to be working okay right now.

That motivated me to get a good current backup image. But again, I didn't want to write over the image I have right now, especially when my system was behaving so unstable. I was afraid it would die in the middle of the backup and I would lose a lot of my files.

I have considered using the OEM Recovery and restoring to factory condition after I get everything backed up. Things would be much simpler if my data files were sequestered in its own partition on my internal drive. The only reason I never bothered with that is because I had major blue screen problems when I got the computer and I'm afraid I will have to figure out all the things I did to fix them 2 years ago. If I did go the OEM Recovery route and start all over, I thought it might be useful to have my files and folders backed up the way I think SyncToy would back them up. (Not an image, but folders and subfolders that I can access directly and copy on a new data partition.)

If I did partition my backup drive, I thought I would make one 1 TB partition that can mirror my internal 1 TB drive using SyncToy or something similar... and just leave the other 2 TB to story system images mostly.

Maybe SyncToy and Windows Backup folders can co-exist on the 3 TB external hard drive with no reason for adding a partition. I suppose that is likely, but since I am unfamiliar with SyncToy and partitions in general, I thought it might be prudent to ask before I start transferring huge amounts of data.

[QUOTE=blue skies;2003709]I think this is a good approach. To use the full 3TB as one partition you would also need to format the HDD as a GPT drive rather than with an MBR partition table.

[QUOTE=mjf;2003752]Thank you for mentioning that. I had never heard of GPT versus MBR but I Googled it and it does seem to be a potential issue.

From what I've just read, I think the Seagate 3TB drives are pre-formatted in two partitions so that they are under the 2.2 GB limit and compatible with Windows 7.

I have more reading to do about this. Is there anything else I should know about large external drives?

Huh. I just plugged in the 3 TB drive and was expecting it to be already formatted by the manufacturer with two partitions - one that is approximately 2 TB and the other almost 800 GB. Either that, or if it was not already partitioned I was expecting to only see the 2 TB partition as usuable and the other 748 GB (or whatever the exact number is) as unallocated and unusable space. Support for Disk Drives Beyond 2.2 TeraBytes (TB) and 4K Advanced Format Sectors

Instead the full amount of storage is in one single partition.

From what I read, motherboards from 2010 mostly are unable to handle GPT formatted drives over 2.2 GB. I bought my computer two years ago, so I definitely wasn't expecting it to accept such a large drive.

Now I'm thinking maybe I should just avoid partitioning it and use it as is, since I don't really understand the issue very well.

I wonder if it shows as one drive because Windows 7 can manage it and read and write to it, but I still have a motherboard that can't boot to it?

My system images won't be bootable though, anyway right? I have to use the repair disc to boot it if the installed OS won't boot, right?

If anyone reads this and I have this all wrong and am missing something, please let me know. I wasn't expecting the size of the external HDD to be an issue, so I'm a little bit thrown by this.

Thank you !

ETA: Darn! I tried to back up and the backup failed due to an I/O device error 0x8007045d I have no idea what that means or how to fix it.

I think the issue the issue has more to do with booting your OS from a >2.2 TB drive. Your Motherboard needs to support UEFI and the drive formatted as GPT. You also need to be running Windows 7 x64.
Data drives are different and Windows 7 will recognize 3TB drives formatted as GPT even if you couldn't boot to an unpartitioned 3TB drive.

If it was me I would still partition the 3 TB external and use an MBR partition table. Windows is fine with GPT data drives but some third party software may have issues. I would be using free Partition Wizard for this. It is well regarded software.

Add: maybe Windows imaging itself has a problem with GPT????
Try partitioning the drive and select MBR format then repeat the imaging exercise.

The MBR partition table requires that both the size and start of a partition cannot exceed the 2 TB limit. You can partition to meet these constraints.

Thank you for your reply. Microsoft suggested running Chkdsk on the volume to be backed up and the target for the backup. The new HDD was fine. I ran it on my desktop disk and I was in the other room when I heard the computer fans turn on which usually means a BSOD. When I got over to my computer it was rebooting. I don't know what caused it. I may try running it one more time, but I'm afraid it will probably happen again.

Your ext HDD is not going to self destruct. You can /should experiment a little before storing valuable data on it.
Assuming no critical data on the ext HDD then -
Using Partition Wizard the delete the ext HDD. Do an MBR format then partition into 2 primary 1.5 TB partitions.
Then try again.

Well, Disk Check ran over night and found no problems.

I am still unable to create and save a system image to my new Seagate 3 TB external hard drive.

After Googling and reading various sites, it seems I will not be able to save any system images to my 3 TB HDD, at least not until I switch to Windows 8:

I am currently doing a regular Windows Backup to the new drive without any System Image... and so far it seems to be okay.