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Subjectscsi/zip mounting problem with 2.4.0-ac4/6 (at least)
Alan and All,

I've detected a bug somewhere in 2.4.0-acX, at least in ac4,
the first ac kernel I built. It seems that I can't mount
a scsi zip disk in, unless the following has occurred:

1. There is a disk in the zip drive when I boot.

2. I fdisk the scsi block device and re-write the partition
table. (I accidently discovered this).

in other words I get this:
mount: /dev/sda4 is not a valid block device.
If I try to insert a zipdisk and mount it after I boot up.

This problem does NOT occur as late as 2.4.0-final.

Specifics of my system:

The SCSI board is a real cheap SYM810A based Fast SCSI-2 PCI board.

I use the sym53c8xx driver built in, as is scsi disk support.
The only thing I use the scsi board for is the external zip 100
drive.

It still occurs in ac6. (I've only build ac4 and 6).

Here is the specifics from a dmesg of 2.4.0 booting:
(2.4.0-ac4 and 6) is the same.
SCSI subsystem driver Revision: 1.00
sym53c8xx: at PCI bus 0, device 13, function 0
sym53c8xx: setting PCI_COMMAND_PARITY...(fix-up)
sym53c8xx: 53c810a detected
sym53c810a-0: rev 0x12 on pci bus 0 device 13 function 0 irq 10
sym53c810a-0: ID 7, Fast-10, Parity Checking
sym53c810a-0: restart (scsi reset).
scsi0 : sym53c8xx - version 1.6b
Vendor: IOMEGA Model: ZIP 100 Rev: C.22
Type: Direct-Access ANSI SCSI revision: 02
Detected scsi removable disk sda at scsi0, channel 0, id 5, lun 0
sym53c810a-0-<5,*>: target did not report SYNC.
sym53c810a-0-<5,*>: target did not report SYNC.
sym53c810a-0-<5,*>: target did not report SYNC.
sym53c810a-0-<5,*>: target did not report SYNC.
sym53c810a-0-<5,*>: target did not report SYNC.
sda : READ CAPACITY failed.
sda : status = 1, message = 00, host = 0, driver = 28
sda : extended sense code = 2
sda : block size assumed to be 512 bytes, disk size 1GB.
sda: I/O error: dev 08:00, sector 0
unable to read partition table

Thanks,
Todd
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