On an Acer Aspire One 522 netbook, the boot process stalls with the message: "The disk drive for /media/SDbackup is not ready yet or not present. Continue to wait, press S to skip or M for manual recovery."

If I eject the relevant SDcard and re-insert it (essentially using the wait option), boot-up continues normally, and the card is mounted.

If I press Esc, the message displayed is:

fsck from util-linux 2.20.1
Ubuntu: clean, 382442/1343488 files, 1480572/5349632 blocks

If I press M, the message displayed is: Filesystem check or mount failed

Interestingly, on a Dell Inspiron laptop, a similar SDcard is mounted automatically on boot-up without the above-noted message appearing.

To provide some background on the netbook system, listings from the fdisk command and the contents of the fstab file are appended below.

Note that using "/dev/sdb1 /media/SDbackup/..." or "UUID=AAC4-9403 /media/SDbackup/..." in fstab produces the same boot-time message; however, the latter entry also produces double listings for SDbackup in the (Gnome Classic) "Places" menu. Consequently, it is currently commented out in fstab.

I have run fsck on the card. This did not identify any errors. I have also re-formatted the card. I used a different SDcard in the card reader. Nothing seems to make a difference to the boot process stalling.

There seem to be multiple bug reports about similar issues with this boot-time warning message but I am unable (in what appears to me to be a complex logging system) to determine if there has been any fix.

Can anyone suggest another approach to mount the Sdcard automatically on boot-up? The intention is to have this available for "real-time" backup of a data partition using inosync.

Output from fdisk -l

Disk /dev/sda: 120.0 GB, 120034123776 bytes
255 heads, 63 sectors/track, 14593 cylinders, total 234441648 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x6adaea7a

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1            2048    30722047    15360000   12  Compaq diagnostics
/dev/sda2   *    30722048    30926847      102400    7  HPFS/NTFS/exFAT
/dev/sda3        30926848   164806655    66939904    7  HPFS/NTFS/exFAT
/dev/sda4       164808704   234440703    34816000    5  Extended
/dev/sda5       164810752   182761471     8975360    7  HPFS/NTFS/exFAT
/dev/sda6       182763520   191641599     4439040   82  Linux swap / Solaris
/dev/sda7       191643648   234440703    21398528   83  Linux

Disk /dev/sdb: 7985 MB, 7985954816 bytes
231 heads, 28 sectors/track, 2411 cylinders, total 15597568 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1            8192    15597567     7794688    b  W95 FAT32

Listing of /etc/fstab

# /etc/fstab: static file system information.
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
proc            /proc           proc    nodev,noexec,nosuid 0       0
# / was on /dev/sda7 during installation
UUID=691436b3-52fe-4d4c-9a0c-70a778ca0e57 /               ext4    errors=remount-ro 0       1
# swap was on /dev/sda6 during installation
UUID=a791c8fd-18f1-418e-bd2e-2451890f14dd none            swap    sw              0       0
#Entries for DataDisk and SDbackup
/dev/sda5    /media/DataDisk/ ntfs-3g defaults,user,locale=en_US.utf8 0 0
/dev/sdb1    /media/SDbackup/ vfat  auto,users,uid=1000,gid=100,dmask=027,fmask=137,utf8  0  0
#UUID=AAC4-9403    /media/SDbackup/ vfat  auto,users,uid=1000,gid=100,dmask=027,fmask=137,utf8  0  0
  • Try running fsck on the drive after choosing manual recovery?
    – psusi
    Dec 21, 2012 at 15:46
  • Not sure what command to use to mount the card. "mount -U AAC4-9403 /media/SDbackup" returns mount: special device /dev/sdb1 does not exist. "mount -a" returns mount: no such partition found
    – CentaurusA
    Dec 21, 2012 at 19:54

1 Answer 1


Try reactivating the last line in /etc/fstab by removing the # and deactivating the line immediately before that by inserting # as first character. The reason might be that the drive is not recognized as /dev/sdb but the UUID should work.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.