Messages in this thread Patch in this message |  | | Date | Thu, 11 Oct 2001 09:19:58 -0400 (EDT) | From | Alexander Viro <> | Subject | [PATCH] Re: Lost Partition |
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On Thu, 11 Oct 2001, Vincent Sweeney wrote:
> I have just upgrade my kernel to 2.4.12 and in the process I've lost a > partition on my secondary IDE drive. Since this is my /usr partition > it's kind of important ;)
Please, see if the following fixes the problem.
--- S11/fs/partitions/msdos.c Tue Oct 9 21:47:27 2001 +++ /tmp/msdos.c Thu Oct 11 09:18:22 2001 @@ -103,21 +103,20 @@ */ static void extended_partition(struct gendisk *hd, struct block_device *bdev, - int minor, int *current_minor) + int minor, unsigned long first_size, int *current_minor) { struct partition *p; Sector sect; unsigned char *data; - unsigned long first_sector, first_size, this_sector, this_size; + unsigned long first_sector, this_sector, this_size; int mask = (1 << hd->minor_shift) - 1; int sector_size = get_hardsect_size(to_kdev_t(bdev->bd_dev)) / 512; int loopct = 0; /* number of links followed without finding a data partition */ int i; - first_sector = hd->part[minor].start_sect; - first_size = hd->part[minor].nr_sects; - this_sector = first_sector; + this_sector = first_sector = hd->part[minor].start_sect; + this_size = first_size; while (1) { if (++loopct > 100) @@ -133,8 +132,6 @@ p = (struct partition *) (data + 0x1be); - this_size = hd->part[minor].nr_sects; - /* * Usually, the first entry is the real data partition, * the 2nd entry is the next extended partition, or empty, @@ -196,6 +193,7 @@ goto done; /* nothing left to do */ this_sector = first_sector + START_SECT(p) * sector_size; + this_size = NR_SECTS(p) * sector_size; minor = *current_minor; put_dev_sector(sect); } @@ -586,12 +584,13 @@ } #endif if (is_extended_partition(p)) { + unsigned long size = hd->part[minor].nr_sects; printk(" <"); /* prevent someone doing mkfs or mkswap on an extended partition, but leave room for LILO */ - if (hd->part[minor].nr_sects > 2) + if (size > 2) hd->part[minor].nr_sects = 2; - extended_partition(hd, bdev, minor, ¤t_minor); + extended_partition(hd, bdev, minor, size, ¤t_minor); printk(" >"); } } - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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