View Full Version : Anyone have a 1TB Hitachi SATA drive? How much usable space after ext3 format?

August 12th, 2007, 07:52 PM
Like the title says. I'm buying one tomorrow and I can't find a answer through Google. :-k

EDIT: Answer 870GB. Kinda disappointing. :(

August 12th, 2007, 08:48 PM
Thatsa spicy meatballs. You must have alot of pron to archive :)

August 12th, 2007, 08:52 PM
My guess would be 976.5625 GB

I could be WAY off though. I just tried to figure out how a 10 gb drive would be reported and then multiplied that answer by 100.


August 12th, 2007, 09:24 PM

1,000GB * 1,000,000,000 / 1,073,741,824 = 931GB

August 12th, 2007, 09:26 PM
And don't forget the size that ext3 takes for itself.
That were 5 percent or so, dunno.

August 12th, 2007, 09:30 PM
You should have about 930GiB of space.

September 14th, 2007, 10:02 PM
Answer: 870GB after a EXT3 format. Kinda disappointing. :( PIC (http://img483.imageshack.us/img483/3348/dscf4568smallti5.jpg)

September 14th, 2007, 10:13 PM
I was thinking 953.7 GB.

September 14th, 2007, 10:27 PM
[QUOTE=MetalMusicAddict;3365834]Answer: 870GB after a EXT3 format. Kinda disappointing. :( PIC (http://img483.imageshack.us/img483/3348/dscf4568smallti5.jpg)

That does seems excessive for just formatting it, maybe something is wrong?

Officer Dibble
September 14th, 2007, 10:37 PM
Like the title says. I'm buying one tomorrow and I can't find a answer through Google. :-k

EDIT: Answer 870GB. Kinda disappointing. :(

A BIOS upgrade may help here... what's yer motherboard?

September 14th, 2007, 10:53 PM
Nope. Everything's very new and up to date. ;) gParted reports it as a 930GB drive and so does Partition Magic. PIC (http://img389.imageshack.us/img389/5775/gpfd8.png) After the EXT3 format the partition table looks to use 60BG because Nautilus says 870GB of space available. PIC (http://img443.imageshack.us/img443/5566/38801846mq2.png)

A 1TB drive might be technically true but it's mostly marketing for now.

September 14th, 2007, 11:34 PM
I am sure you know this already, but just to put it out there in case someone else isn't. You can reset the amount of reserved space by "Modifying reserved space"

sudo tune2fs -m 1 /dev/xdxN

Changes the reserved space from 5% to 1% and in the case of a TB drive, that would net you 40.96GB +/-... if my calculations are right that is! ;) (Basing on 1024GB)

You can also do this when doing a fresh install by manually setting the partition table.

Basing on the number gparted reports of 930GB, the added usuable space should increase by 37.2GB.

September 15th, 2007, 01:45 AM
southernman. Can you do this on drives with existing data?

September 15th, 2007, 02:44 AM
I've done it on my main hard drive... all partitions. Didn't hurt a thing, in my case. YMMV

It should be safe, it's not effecting your data at all.

August 4th, 2010, 10:37 PM
I just got a 1TB Toshiba Canvio portable hard drive and changed the default format from NTFS to ext4 and was horrified to see I lost over 40GB of space. Then I found this thread and tried

sudo tune2fs -m 1 /dev/sdb1

and regained all but 9.5Gb! I am so glad I learned about this here! I was afraid to set the reserved space to 0% because a poster on another forum mentioned it gave him or her problems.

Does anyone know if taking away the reserved space on an external portable hard drive makes a difference? I am only using it for data storage.