[clug] Dumb user question: 2+TB disks, MBR & BIOS...
sjenkin at canb.auug.org.au
Tue Jan 1 22:48:44 MST 2013
My apologies if this question has been asked/answered on-list,
especially if by me :-(
My memory isn't what it used to be: once it was reliable.
I read a piece by Seagate that MBR (Master Boot Record) partitioned
disks only have 32-bits for sector size, so for 512by sectors, maxx out
at "2.1TB" (2TiB or 2^41by).
- To boot from them, need an EFI/UEFI system. BIOS won't work unless
you 'destroke' the drive.
- Windows XP will only see the *excess* over 2TiB [wrap-around problem]
- Vista/Win-7/Win-8 can do Maths on >32-bits!
- If you want to partition the disk you need to use GPT
(GUID Partition Table)
- anyone built any desktop systems with a 3/4TB drive?
- booted from a large drive? Tips & Tricks?
- Used 3/4TB drives as (USB) removable Storage?
I guess I'm wondering if modern Desktops and white-box servers support
UEFI, rather than BIOS.
I'm sure I've read that Linux does UEFI. [not sure, but it's the
ultimate glue and generally supports All Known Hardware]
And, IIRC, there was a thread on-list about GPT partitions (suggested
tool gparted?? can't recall) not too long ago.
Think it was mainly "what tool do I use?"
- If I'm buying a laptop and want to connect a 3-4TB drive via USB or
something, are there any gotchas or prerequisites?
- If I build/buy a barebones server & want to use >2TB drives, what do
I have to look out for or avoid? [Tips & Tricks]
Or is this all taken care of in modern motherboards, because we've had
>2TB drives for a few years now.
URL's are good answers, don't expect people to reinvent the wheel.
As as some well chosen search terms :-)
But War Stories are always more interesting. Like when the Linux kernel
went from /dev/hd[0-9] to /dev/sd[0-9]... Supporting multiple boots got
'interesting' for a while there.
Thanks in Advance.
Steve Jenkin, Info Tech, Systems and Design Specialist.
0412 786 915 (+61 412 786 915)
PO Box 48, Kippax ACT 2615, AUSTRALIA
sjenkin at canb.auug.org.au http://members.tip.net.au/~sjenkin
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