Gentoo Archives: gentoo-user

From: Andrea Conti <alyf@××××.net>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] Partition of 3TB USB drive not detected
Date: Sat, 06 Aug 2016 07:21:58
Message-Id: 934d337b-3559-d213-7182-4e72ecf60e96@alyf.net
In Reply to: [gentoo-user] Re: Re: Re: Partition of 3TB USB drive not detected by "Jörg Schaible"
1 Hi,
2
3 > ~ # parted /dev/sde print
4 > Model: WD My Book 1230 (scsi)
5 > Disk /dev/sde: 6001GB
6 > Sector size (logical/physical): 4096B/4096B
7
8 [...]
9
10 > AFAICS this partition works fine, fsck does not report any problem. The
11 > funny thing is, it should not have been possible, because of the 2GB limit
12 > of MBR.
13
14 The real limit of MBR is 2^32 sectors, which amounts to 2TB when using
15 512B sectors. Both your disks are using native 4kB sectors (look at the
16 logical sector size in the parted output), which effectively raises the
17 MBR limit to 16TB.
18
19 Not that this answers your question, as the Linux kernel has supported
20 4kB sectors for years and AFAIK it does not need any special
21 configuration options to do so...
22
23 andrea

Replies

Subject Author
Re: [gentoo-user] Partition of 3TB USB drive not detected james <garftd@×××××××.net>