Hello. When attempting to boot Linux kernel v2.2.17 from a Compact Flash (CF) device I am getting the errors shown below. This CF device is in a PCMCIA form factor and is the Master device on the secondary IDE controller Before we get to the errors, though, a little background. I can reproduce this boot error on 2 different systems, and have seen the same error messages (non-booting) on a 3rd system. For both boot systems the CF device is the only IDE device and is the Master on the secondary IDE controller (/dev/hdc). For the non-booting system the device is in a PCMCIA slot (/dev/hde). This is what I see at boot time: ide1 at 0x170-0x177,0x376 on irq 15 hdc: SanDisk SDCFB-128, 122MB /w1kB Cache, CHS=980/8/32 Partition check: hdc: hdc1 hdc2 hdc: hdc1 hdc2 hdc: drive_cmd: status=0x51 { DriveReady SeekComplete Error } hdc: drive_cmd: error=0x04 { DriveStatusError } hdc: hdc1 hdc2 hdc: hdc1 hdc2 [MS-DOS FS Rel. 12 FAT 16 check=n,conv=b,uid=0,umask=022,bmap] [me=0x1,cs=0x1240,#f=191,fs=34616,fl=1699280,ds=327153000,de=1536,data=327153120,se=185,ts=1015022771,ls=20487,rc=0,fc=4294967295] Transaction block size = 512 UMSDOS: msdos_read_super failed mount aborted hdc: hdc1 hdc2 [MS-DOS FS Rel. 12 FAT 16 check=n,conv=b,uid=0,umask=022,bmap] [me=0x1,cs=0x1240,#f=191,fs=34616,fl=1699280,ds=327153000,de=1536,data=327153120,se=185,ts=1015022771,ls=20487,rc=0,fc=4294967295] Transaction block size = 512 Kernel panic: VFS: Unable to mount root fs on 16:00 That's it. I've listed the (U)MSDOS complaints for completeness, but as I get the same drive_cmd messages when simply inserting the device in a PCMCIA slot (that is, before attempting to mount any filesystem), I don't think that it is a factor. This is definately an OS issue. I've booted many OSes (DOS, Win95, VxWorks, LynxOS) from this same configuration (CF = IDE1/Master as the sole IDE device) and have seen no complaints like the ones shown above. So... what can I do to work around this problem? Thank you. PLANET PROJECT will connect millions of people worldwide through the combined technology of 3Com and the Internet. Find out more and register now at http://www.planetproject.com - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/