Messages in this thread | | | Date | Mon, 30 Apr 2001 11:12:34 -0400 | Subject | Re: Seagate ST340824A and (un)clipping max LBA: 2.2.19+ide04092001 patch | From | Alexander Stavitsky <> |
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On Sat, Apr 28, 2001 at 12:22:07AM +0200, Andries.Brouwer@cwi.nl wrote:
> No. Maybe someone can tell us about its origin, but in your case > of course this just works because 0xa intersects 0x306b. You might > comment out this entire test.
If I comment out the entire test, it would try to unclip the capacity of all drives. Is it safe? For my situation I would prefer to use "setmax" or disk specific "seagate" (see later), but I do not know how to change the kernel idea of drive geometry and capacity. I use 2.2.19 + ide patch. Neither fdisk nor dd would not read past the clipped capacity before or after software unclipping.
> > In the case of this particular disk the manufacturer says: > Use the Set Features command (EF) with subfunction F1. > That tells the disk to report full capacity. > (ATA-6 says that F1 is reserved for use by the Compact Flash Association) > > [Could you try that and report identify output before and after?]
Yes, I tried that and it does report unclipped capacity. seagate.c is attached for reference.
stalex@eagle:~$ sudo hdparm -I /dev/hdb /dev/hdb:
Model=TS438042 A , FwRev=.350 , SerialNo=H30E0186 Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs RotSpdTol>.5% } RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=0 BuffType=unknown, BuffSize=2048kB, MaxMultSect=16, MultSect=?16? CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=66055248 IORDY=on/off, tPIO={min:240,w/IORDY:120}, tDMA={min:120,rec:120} PIO modes: pio0 pio1 pio2 pio3 pio4 DMA modes: mdma0 mdma1 mdma2 udma0 udma1 *udma2 udma3 udma4 udma5 stalex@eagle:~$ sudo /usr/src/seagate /dev/hdb Using device /dev/hdb Sending Set Features F1 subcommand Done. stalex@eagle:~$ sudo hdparm -I /dev/hdb
/dev/hdb:
Model=TS438042 A , FwRev=.350 , SerialNo=H30E0186 Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs RotSpdTol>.5% } RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=0 BuffType=unknown, BuffSize=2048kB, MaxMultSect=16, MultSect=?16? CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=78165360 IORDY=on/off, tPIO={min:240,w/IORDY:120}, tDMA={min:120,rec:120} PIO modes: pio0 pio1 pio2 pio3 pio4 DMA modes: mdma0 mdma1 mdma2 udma0 udma1 *udma2 udma3 udma4 udma5
-- = mailto:astavitsky@yahoo.com === http://www.geocities.com/astavitsky ===== GPG Key 0xF7343C8B: 68DD 1E1B 2C98 D336 E31F C87B 91B9 5244 F734 3C8B |_____Alexander Stavitsky #include <stdio.h> #include <fcntl.h> //#include <linux/ide.h> #include <linux/hdreg.h>
#define SEAGATE_REPORT_FULL_CAPACITY 0xF1
int get_identity(int fd) { unsigned char args[4+512] = {WIN_IDENTIFY,0,0,1,}; struct hd_driveid *id = (struct hd_driveid *)&args[4];
if (ioctl(fd, HDIO_DRIVE_CMD, &args)) { perror("HDIO_DRIVE_CMD"); fprintf(stderr, "WIN_IDENTIFY failed - trying WIN_PIDENTIFY\n"); args[0] = WIN_PIDENTIFY; if (ioctl(fd, HDIO_DRIVE_CMD, &args)) { perror("HDIO_DRIVE_CMD"); fprintf(stderr, "WIN_PIDENTIFY also failed - giving up\n"); exit(1); } }
printf("id->command_set_1: 0x%X\n", id->command_set_1); printf("id->lba_capacity: %lu\n", id->lba_capacity); }
/* * result: in LBA mode precisely what is expected * in CHS mode the correct H and S, and C mod 65536. */
int set_feature(int fd) { unsigned char args[4] = {WIN_SETFEATURES,0,0xf1,0}; int i;
if (ioctl(fd, HDIO_DRIVE_CMD, &args)) { perror("HDIO_DRIVE_CMD failed WIN_SETFEATURES"); for (i=0; i<4; i++) printf("%d = 0x%X\n", args[i], args[i]); exit(1); }
return 0; }
main(int argc, char **argv){ int fd, c;
char *device = NULL; /* e.g. "/dev/hda" */ int slave = 0;
device = argv[1]; if (!device) { fprintf(stderr, "no device specified - " "use e.g. \"seagate /dev/hdb\"\n"); exit(1); } printf("Using device %s\n", device);
fd = open(device, O_RDONLY); if (fd == -1) { perror("open"); exit(1); } printf("Sending Set Features F1 subcommand\n"); set_feature(fd); printf("Done.\n");
return 0; } [unhandled content-type:application/pgp-signature]
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