From: John Bradford <john@grabjohn.com>
To: alan@lxorguk.ukuu.org.uk (Alan Cox)
Cc: ludovic.drolez@freealter.com, linux-kernel@vger.kernel.org
Subject: Re: BLKBSZSET still not working on 2.4.18 ?
Date: Fri, 10 Jan 2003 17:08:49 +0000 (GMT) [thread overview]
Message-ID: <200301101708.h0AH8nUS013550@darkstar.example.net> (raw)
In-Reply-To: <1042218525.31848.40.camel@irongate.swansea.linux.org.uk> from "Alan Cox" at Jan 10, 2003 05:08:46 PM
> > I'm trying to backup a partition on an IDE drive which has an odd number
> > of sectors (204939). With a stock open/read you cannot access the last
> > sector, and that why I tried the BLKBSZSET ioctl to set the basic read
> > block size to 512 bytes. I verified the writen value with BLKBSZGET
> > ioctl, but I still cannot read this last sector !
>
> Its a known 2.4 limitation. The last odd sector isnt normally used by
> anything so it has never been a big issue (except with EFI partition
> data).
Didn't some really obscure IBM drives use it for something internally,
and shortly after everybody else had to stop using it incase they
overwrote the custom data at the end of an IBM disk, or am I thinking
of something else?
John.
next prev parent reply other threads:[~2003-01-10 17:00 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-01-10 15:32 BLKBSZSET still not working on 2.4.18 ? Ludovic Drolez
2003-01-10 16:13 ` Andries Brouwer
2003-01-13 11:28 ` Ludovic Drolez
2003-01-13 15:26 ` Andries Brouwer
2003-01-10 17:08 ` Alan Cox
2003-01-10 17:08 ` John Bradford [this message]
2003-01-10 18:14 ` Alan Cox
2003-01-10 17:40 ` Andries Brouwer
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=200301101708.h0AH8nUS013550@darkstar.example.net \
--to=john@grabjohn.com \
--cc=alan@lxorguk.ukuu.org.uk \
--cc=linux-kernel@vger.kernel.org \
--cc=ludovic.drolez@freealter.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox