SD Card - boot sector
in [Embedded]
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From: Ross Marchant on 11 Jan 2006 21:46 "larwe" <zwsdotcom(a)gmail.com> wrote in message news:1137029038.455013.15190(a)f14g2000cwb.googlegroups.com... > > Ross Marchant wrote: > >> Sometimes removeable media come with the MBR / partition table and so >> formatting will retain will retain the MBR. However if the disk is >> subsequently damaged then windows will totally reformat the disk, with no >> MBR and the dos boot sector as sector 0. It is worthwhile checking for >> both >> instances. I do this by checking if the first byte of sector 0 is 0xEB. > > What kind of interface were you using to access the drive? > > I just did the following: On a linux box: > > dd if=/dev/zero of=/dev/sda bs=512 count=100 > > then using the inbuilt O2Micro SD reader slot in my laptop, reformatted > the card in Windows. The resulting card had an MBR with one partition > (not marked active). > > So I don't think it's as consistent as this. > Belkin card reader. I think it may have been when the MBR was damaged windows reformatted it this way. Sorry for any confusion or generalisations, it might only be my box that was playing up. Ross
From: Paul Black on 12 Jan 2006 04:31 Maxim S. Shatskih wrote: > Windows does not support MBR and partitions on removable media, What about USB and Firewire disks? Paul
From: Grant Edwards on 12 Jan 2006 10:11 On 2006-01-12, Paul Black <nospam(a)nospam.oxsemi.com> wrote: > Maxim S. Shatskih wrote: >> Windows does not support MBR and partitions on removable media, > > What about USB and Firewire disks? They're not "removable". -- Grant Edwards grante Yow! Hmmm... a CRIPPLED at ACCOUNTANT with a FALAFEL visi.com sandwich is HIT by a TROLLEY-CAR...
From: larwe on 12 Jan 2006 10:19 Grant Edwards wrote: > >> Windows does not support MBR and partitions on removable media, > > > > What about USB and Firewire disks? > > They're not "removable". Depends on the disk. What about ZIP disks? My cheapo USB-to-laptop-drive adapters mount as a removable drive (they show the "socketed drive" icon and have an Eject option on the context menu).
From: Grant Edwards on 12 Jan 2006 10:23
On 2006-01-12, larwe <zwsdotcom(a)gmail.com> wrote: > > Grant Edwards wrote: > >> >> Windows does not support MBR and partitions on removable media, >> > >> > What about USB and Firewire disks? >> >> They're not "removable". > > Depends on the disk. What about ZIP disks? Right. For some reason I thought we were talking about USB and Firewire hard-drives. Other types of USB mass-storage show up as removable (Zip disks, CF readers, etc.). -- Grant Edwards grante Yow! MERYL STREEP is my at obstetrician! visi.com |