The disk drive for uuid= is not ready yet or not present, Continue to wait; or Press S to skip

So you just saw this message at boot: 
The disk drive for uuid=[long string of numbers and letters]…. is not ready yet or not present, Continue to wait; or Press S to skip

Why did this happen?
A couple of reasons. One of your hard-drives is knackered, You’ve been messing around and accidentally unplugged a hard-drive, a partition has been formatted or is unreadable.

Most Probable Cause:
You installed another Linux distro to dual-boot with, and it has renumbered your SWAP partition, and now your old Linux doesn’t recognize it.

How do I fix it?
1. Open your Terminal with 3 tabs (Ctrl+T) on Terminator, Gnome-Terminal etc. Or just open 3 terminals if you prefer that.


2. In terminal One, list your discs and partitions to find SWAP

sudo fdisk -l

Mine are:

Device Boot Start End Blocks Id System

/dev/sda1 * 1859031040 3907028991 1023998976 7 HPFS/NTFS/exFAT

/dev/sda2 2048 1859031039 929514496 7 HPFS/NTFS/exFAT

Device Boot Start End Blocks Id System

/dev/sdb1 * 2048 488476671 244237312 7 HPFS/NTFS/exFAT

/dev/sdb2 488476672 976773119 244148224 7 HPFS/NTFS/exFAT

Device Boot Start End Blocks Id System

/dev/sdc1 2048 256008191 128003072 83 Linux

/dev/sdc2 * 512007615 623081024 55536705 7 HPFS/NTFS/exFAT

/dev/sdc3 623081472 625141759 1030144 82 Linux swap / Solaris

/dev/sdc4 256008192 512006143 127998976 83 Linux

3. In Terminal Two, get the UUIDs for each partition:

sudo blkid

Mine are:

/dev/sda1: UUID=”5A81E99E5D0E4BEC” TYPE=”ntfs”

/dev/sda2: UUID=”2ED785F62B8C2905″ TYPE=”ntfs”

/dev/sdb1: UUID=”AC84B67484B6409E” TYPE=”ntfs”

/dev/sdb2: UUID=”6E5D895444E6C134″ TYPE=”ntfs”

/dev/sdc1: UUID=”fb9b8f73-8755-41d7-9c86-a721fd354bad” TYPE=”ext4″

/dev/sdc2: UUID=”22B0AAE8B0AAC1A1″ TYPE=”ntfs”

/dev/sdc3: UUID=”a90dd59c-cba2-4275-8fc0-23cf097675a2″ TYPE=”swap”

/dev/sdc4: UUID=”cb69c289-170b-4b37-8d8f-970707ec0fd0″ TYPE=”ext4″

4. We are going to turn SWAP off before we edit anything.

sudo swapoff -a

5. In Terminal 3 we will edit fstab and change the UUID for SWAP which we can see is wrong.

sudo vim /etc/fstab

Mine looks like this:

proc /proc proc nodev,noexec,nosuid 0 0

# / was on /dev/sdb1 during installation

UUID=fb9b8f73-8755-41d7-9c86-a721fd354bad / ext4 errors=remount-ro 0 1

# swap was on /dev/sdb3 during installation

UUID=8389288c-0a99-40c7-8d56-4c9333e458dc none swap sw 0 0

# Storage Partition 1 on /dev/sda1

UUID=5A81E99E5D0E4BEC /storage1 ntfs-3g auto,users,uid=1000,gid=100,dmask=027,fmask=137,utf8 0

# Storage Partition 2 on /dev/sda2

UUID=2ED785F62B8C2905 /storage2 ntfs-3g auto,users,uid=1000,gid=100,dmask=027,fmask=137,utf8 0

# Storage Partition 3 on /dev/sdb2

UUID=6E5D895444E6C134 /storage3 ntfs-3g auto,users,uid=1000,gid=100,dmask=027,fmask=137,utf8 0

6. Now we are going to remove the UUID from the SWAP line, and leave the cursor just after the “=”

# swap was on /dev/sdb3 during installationUUID= none swap sw 0 0

7. Now look at Terminal Two and copy that UUID from SWAP, and paste it into the fstab file so it looks like this:

# swap was on /dev/sdb3 during installationUUID=a90dd59c-cba2-4275-8fc0-23cf097675a2 none swap sw 0 0

8. Save and Quit vim with “:wq + Enter”
9. Turn SWAP on again

sudo swapon -a

That’s it, all done, you now have the correct UUID for your SWAP partition.

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Wireless-Only installs with Debian, Crunchbang and Kali Linux – Missing Non-Free Firmware

Wireless Network
I changed my entire network over to wireless and my router is now fixed to the wall, 25 meters away from my office, in my lounge. The wireless from my office reaches ok, and means we have a stronger signal from the lounge where we have our XBMC media center and everybody connects with their smart phones.

Wireless PCI/USB cards and Non-Free Drivers
Due to the fact that some manufacturers won’t release the source code for their drivers (Thank you Broadcom and Ralink!!) we still have a bit of a hard time, even though Linux geniuses have reverse engineered and hacked practically all of them for us so we can load wireless modules from the kernel.

Politics and Freedom
Some distros willingly provide non-free drivers right from the get-go, others are more conservative and stick to Stallmanesque non-free restrictions. Debian does this…. still…. in 2013.


Debian Live Builder
I’ve built my own Debian based distros, and like other distros which are built with this system, mainly Crunchbang and just recently Kali Linux (The New “Debian-Based” Backtrack).

Live Yes – Install No
I recently got a bit of a surprise with some Live installs, as I found that when running both Crunchbang and Kali live, my Ralink wireless USB firmware was loaded and allowed me to connect to the internet, but when I went for the install, at the network configuration step, I was told that the firmware was missing!!

Solution
When this stage happens:
1. Take a picture of the screen on the Debian Installer which tells you which files you need from /lib/firmware. In my case “rt2870.bin” and “rtl8168e-3.fw”.

2. Insert a blank USB Pendrive
3. Reboot the Live CD to get to the Live Session
4. Copy the two needed files from /lib/firmware on the Live CD to the Pendrive
5. Reboot and run the installer

The Debian Live installer will detect the firmware on the Pendrive, load it, and allow you to choose your wireless ESSID and WPA key, and continue the install.

There’s no time like now for the old adage “You learn something new every day”.

May all you fellow wireless-only users, now be able to install any Debian-based distro without being put off by this minor freenoyance.

Unofficial Debian Wheezy Netinstall with Non-Free Wireless Firmware

Wireless Network
As I am on a completely wireless home network, with about 25 meters separating my office computer from the router in my lounge, I went on a hunt for a Debian Netinstall iso with wireless firmware already added.

Non-Free Wireless Firmware Included
I remember a while back I came across a Squeeze version. Luckily for me, there is also a Wheezy version too!

Here:
http://cdimage.debian.org/cdimage/unofficial/non-free/cd-including-firmware/wheezy_di_rc1/amd64/iso-cd/firmware-wheezy-DI-rc1-amd64-netinst.iso